├── trainingSet ├── data.neg ├── data.pos ├── data.README.1.0.txt ├── delimit.txt └── review.txt ├── src ├── test │ ├── style.php │ └── presentation.php ├── SentimentAnalyzer.php ├── test.php └── SentimentAnalyzer.class.php ├── README.md └── LICENSE /trainingSet/data.neg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Samshal/PHP-Sentiment-Analyzer/HEAD/trainingSet/data.neg -------------------------------------------------------------------------------- /trainingSet/data.pos: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Samshal/PHP-Sentiment-Analyzer/HEAD/trainingSet/data.pos -------------------------------------------------------------------------------- /trainingSet/data.README.1.0.txt: -------------------------------------------------------------------------------- 1 | 2 | ======= 3 | 4 | Introduction 5 | 6 | This README v1.0 (June, 2005) for the v1.0 sentence polarity dataset comes 7 | from the URL 8 | http://www.cs.cornell.edu/people/pabo/movie-review-data . 9 | 10 | ======= 11 | 12 | Citation Info 13 | 14 | This data was first used in Bo Pang and Lillian Lee, 15 | ``Seeing stars: Exploiting class relationships for sentiment categorization 16 | with respect to rating scales.'', Proceedings of the ACL, 2005. 17 | 18 | @InProceedings{Pang+Lee:05a, 19 | author = {Bo Pang and Lillian Lee}, 20 | title = {Seeing stars: Exploiting class relationships for sentiment 21 | categorization with respect to rating scales}, 22 | booktitle = {Proceedings of the ACL}, 23 | year = 2005 24 | } 25 | 26 | -------------------------------------------------------------------------------- /trainingSet/delimit.txt: -------------------------------------------------------------------------------- 1 | a feel-good picture in the best sense of the term . 2 | digital-video documentary about stand-up comedians is a great glimpse into a very different world . 3 | edited and shot with a syncopated style mimicking the work of his subjects , pray turns the idea of the documentary on its head , making it rousing , invigorating fun lacking any mtv puffery . 4 | a refreshing korean film about five female high school friends who face an uphill battle when they try to take their relationships into deeper waters . 5 | while the performances are often engaging , this loose collection of largely improvised numbers would probably have worked better as a one-hour tv documentary . 6 | there is a difference between movies with the courage to go over the top and movies that don't care about being stupid 7 | nothing here seems as funny as it did in analyze this , not even joe viterelli as de niro's right-hand goombah . 8 | such master screenwriting comes courtesy of john pogue , the yale grad who previously gave us " the skulls " and last year's " rollerball . " enough said , except : film overboard ! -------------------------------------------------------------------------------- /src/test/style.php: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /src/SentimentAnalyzer.php: -------------------------------------------------------------------------------- 1 | . 6 | * All rights reserved. 7 | * 8 | * Redistribution and use in source and binary forms, with or without 9 | * modification, are permitted provided that the following conditions 10 | * are met: 11 | * 12 | * * Redistributions of source code must retain the above copyright 13 | * notice, this list of conditions and the following disclaimer. 14 | * 15 | * * Redistributions in binary form must reproduce the above copyright 16 | * notice, this list of conditions and the following disclaimer in 17 | * the documentation and/or other materials provided with the 18 | * distribution. 19 | * 20 | * * Neither the name of Samuel Adeshina nor the names of his 21 | * contributors may be used to endorse or promote products derived 22 | * from this software without specific prior written permission. 23 | * 24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER 25 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 27 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 28 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 29 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 30 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 31 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 32 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 34 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 | * POSSIBILITY OF SUCH DAMAGE. 36 | * 37 | * @package sentiment-analyzer 38 | * @author Samuel Adeshina 39 | * @copyright 2015 Samuel Adeshina 40 | * @since File available since Release 1.0.0 41 | *//* 42 | 43 | */ 44 | require_once('SentimentAnalyzer.class.php'); 45 | 46 | class SentimentAnalyzerTest 47 | { 48 | protected $sentimentAnalyzer; 49 | public function __construct(SentimentAnalyzer $sentimentAnalyzer) 50 | { 51 | $this->sentimentAnalyzer = $sentimentAnalyzer; 52 | } 53 | 54 | public function trainAnalyzer($testDataLocation, $testDataType, $testDataAmount) 55 | { 56 | return $this->sentimentAnalyzer->insertTestData($testDataLocation, $testDataType, $testDataAmount); 57 | } 58 | 59 | public function analyzeSentence($sentence) 60 | { 61 | return $this->sentimentAnalyzer->analyzeSentence($sentence); 62 | } 63 | 64 | public function analyzeDocument($document) 65 | { 66 | return $this->sentimentAnalyzer->analyzeDocument($document); 67 | } 68 | } 69 | ?> -------------------------------------------------------------------------------- /src/test/presentation.php: -------------------------------------------------------------------------------- 1 | 2 |
3 |

Enter A Sentence Here To Determine If it Sounds Positive, Negative or Neutral

4 |
5 | 6 | 7 |
8 |

OR

9 |

Enter The Location of a text file to analyze its content

10 |
11 | 12 | 13 |
14 |
15 | analyzeSentence($value); 23 | } 24 | else 25 | { 26 | $result = $sat->analyzeDocument($value); 27 | } 28 | } 29 | else 30 | { 31 | $result = array('sentiment'=>null, 'accuracy'=>array('positivity'=>null, 'negativity'=>null)); 32 | } 33 | ?> 34 |

Analysis Result

35 |

Sentiment:

36 |

Prob. of Being Positive:

37 |

Prob. of Being Negative:

38 |
39 |
40 |
41 |

Sentence: ""

42 |

Sentiment Analysis Score:

43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 |
Probability Of Sentence Being PositiveProbability of Sentence Being Negative
53 |
54 |
55 |

Sentence: ""

56 |

Sentiment Analysis Score:

57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 |
Probability Of Sentence Being PositiveProbability of Sentence Being Negative
67 |
68 |
69 |

Document: ""

70 |

Document Analysis Score:

71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 |
Probability Of Document Being PositiveProbability of Document Being Negative
81 |
82 | -------------------------------------------------------------------------------- /trainingSet/review.txt: -------------------------------------------------------------------------------- 1 | When writing a PHP enabled web application, most of us focus on every other thing but the vulnerability of our apps or websites to blackhat hackers, unauthorized user or bot access and more generally, Insecurity. 2 | User privacy, data security and authorized access to information are one of the most discussed topics amongst developers today, but they are also the most difficult to implement. 3 | This book, Building Secure PHP Applications by Ben Edmumds explains what it really means to have and build a secure web application using the best practices available in the PHP programming language. It explains the pros and cons of various techniques used in the security industry, and uses concise, easy to read, object oriented PHP code samples to illustrate every discussed idea. 4 | After going through the various chapters of the book, and the in-depth explanations of key security concepts and the best ways to implement them, I began to wish I had come across this book earlier on, when I started learning about the subject of security and how important they are. 5 | One more thing that caught by attention about this book is that; it is one of the few books that have really kept on their promise of ‘Absolute Beginner Assumed’, most books says this but as soon as you dive in, you find out it’s a whole new thing entirely, this one is an exception. It introduces every concepts in way that its easy to grasp by the ‘absolute beginner’ and useful as a reference to the advanced developers. 6 | The author began the book by telling us why our users can never be trusted, he started by narrating a humorous incident in chapter 1 that could arise due to insecurity. He listed ways an application can be open to penetration or unauthorized access and also gave ways to prevent this. 7 | Chapter 2 introduced the major terminologies used in the security industry, the author told us what they are and why we should care about them. The parts that caught my attention the most were the HTTPS sections: ‘What is HTTPS’ and ‘Implementing HTTPS’. HTTPS is the least most used security concept amongst PHP developers for reasons that were explicitly explained in this chapter, which also provides solutions and guidelines on how to implement it. 8 | Chapters 3 and 4 talked about how to keep every relevant data such as passwords, files and pages of a web application encrypted, safe and unavailable to unauthorized users, thereby creating a secure environment and application. Concepts such as Hashing, Encryption, Authorization, Authentication and numerous others were concisely laid down in these chapters, code samples and use cases were given to aid comprehension. 9 | Lastly, Chapter 5 explains most of the various ways blackhats penetrates an application and how those applications may be vulnerable, and also provided solutions and suggestions on how to prevent these instances from happening. Most of the common open doors, penetration techniques and security bugs were discussed in this chapter. 10 | This book really went beyond the line to explain the concept of security and what it means to develop a secure PHP application. 11 | I recommend it to every beginners looking into how to make their applications less vulnerable to blackhats, spammers and malicious bots. It shall also appeal to intermediate and advanced PHP developers as a reference to the broad subject of security. Developers from other backgrounds would also find this book worth reading as the concepts taught in the book can easily be ported to other areas of software development. 12 | Reference able 13 | 14 | 15 | 16 | Having a material such as this one that dives deep into the techniques of security and how to implement these techniques in a PHP environment, are not so easy to come by. This book is very comprehensive, easy to understand and best of all worth reading to anybody interested in the concept of security. Although, it was written for and based on the PHP programming language, developers from other language backgrounds would also find the techniques and concept explanation very useful. 17 | 18 | 19 | -------------------------------------------------------------------------------- /src/test.php: -------------------------------------------------------------------------------- 1 | trainAnalyzer('../trainingSet/data.neg', 'negative', 5000); //training with negative data 35 | $sat->trainAnalyzer('../trainingSet/data.pos', 'positive', 5000); //trainign with positive data 36 | 37 | 38 | /* 39 | The analyzeSentence method accepts as a sentence as parameter and score it as a positive, 40 | negative or neutral sentiment. it returns an array that looks like this: 41 | 42 | array 43 | ( 44 | 'sentiment' => '[the sentiment value returned]', 45 | 'accuracy' => array 46 | ( 47 | 'positivity'=> 'A floating point number showing us the probability of the sentence being positive', 48 | 'negativity' => 'A floating point number showing us the probability of the sentence being negative', 49 | ), 50 | ) 51 | 52 | An example is shown below: 53 | */ 54 | 55 | $sentence1 = 'while the performances are often engaging , this loose collection of largely improvised numbers would probably have worked better as a one-hour tv documentary . '; 56 | $sentence2 = 'edited and shot with a syncopated style mimicking the work of his subjects , pray turns the idea of the documentary on its head , making it rousing , invigorating fun lacking any mtv puffery . 57 | '; 58 | 59 | $sentimentAnalysisOfSentence1 = $sat->analyzeSentence($sentence1); 60 | 61 | $resultofAnalyzingSentence1 = $sentimentAnalysisOfSentence1['sentiment']; 62 | $probabilityofSentence1BeingPositive = $sentimentAnalysisOfSentence1['accuracy']['positivity']; 63 | $probabilityofSentence1BeingNegative = $sentimentAnalysisOfSentence1['accuracy']['negativity']; 64 | 65 | $sentimentAnalysisOfSentence2 = $sat->analyzeSentence($sentence2); 66 | 67 | $resultofAnalyzingSentence2 = $sentimentAnalysisOfSentence2['sentiment']; 68 | $probabilityofSentence2BeingPositive = $sentimentAnalysisOfSentence2['accuracy']['positivity']; 69 | $probabilityofSentence2BeingNegative = $sentimentAnalysisOfSentence2['accuracy']['negativity']; 70 | 71 | 72 | 73 | 74 | 75 | 76 | /* 77 | The AnalyzeDocument method accepts the path to a text file as parameter. 78 | It analyzes the file and scores it as either a positive or a negative sentiment. It also 79 | returns an array with the same keys as the analyzeSentence method. 80 | 81 | An example is demonstrated below 82 | 83 | */ 84 | 85 | $documentLocation = '../trainingSet/review.txt'; 86 | $sentimentAnalysisOfDocument = $sat->analyzeDocument($documentLocation); 87 | $resultofAnalyzingDocument = $sentimentAnalysisOfDocument['sentiment']; 88 | $probabilityofDocumentBeingPositive = $sentimentAnalysisOfDocument['accuracy']['positivity']; 89 | $probabilityofDocumentBeingNegative = $sentimentAnalysisOfDocument['accuracy']['negativity']; 90 | 91 | require_once('test/presentation.php'); 92 | ?> 93 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # PHP-Sentiment-Analyzer 2 | 3 | ## ABOUT 4 | > Sentiment Analysis is the process of computationally identifying and categorizing opinions expressed in a piece of text, especially in order to determine whether the writer's attitude towards a particular topic, product, etc., is positive, negative, or neutral. 5 | 6 | > This package is an implementation of the Naive Bayes Algorithm To Determine the sentiment of a particular statement, a book review, chat, speech and so on. It marks a sentence as positive, negative or neutral depending on the kind of words that are used, this can help in automatically selecting a review, comment or chat that has the best intentions in any situation. 7 | 8 | 9 | ## HOW-TO 10 | We instantiate the SentimentAnalyzerTest class below by passing in the SentimentAnalyzer object (class) 11 | found in the file: 'SentimentAnalyzer.class.php'. 12 | 13 | This class must be injected as a dependency into the constructor as shown below 14 | 15 | 16 | $sat = new SentimentAnalyzerTest(new SentimentAnalyzer()); 17 | 18 | **Training The Sentiment Analysis Algorithm with words found in the trainingSet directory** 19 | 20 | The File 'data.neg' contains a list of sentences that's been marked 'Negative'. 21 | We use the words in this file to train the algorithm on how a negative sentence/sentiment might 22 | be structured. 23 | 24 | Likewise, the file 'data.pos' contains a list of 'Positive' sentences and the words are also 25 | used to train the algorithm on how to score a sentence or document as 'Positive'. 26 | 27 | The trainAnalyzer method below accepts three parameters: 28 | + param 1: The Location of the file where the training data are located 29 | + param 2: Used to describe the 'type' of file [param 1] is; used to indicate 30 | whether the supplied file contians positive words or not 31 | + param 3: Enter a less than or equal to 0 here if you want all lines in the 32 | file to be used as a training set. Enter any other number if you want to 33 | use exactly those number of lines to train the algorithm 34 | 35 | $sat->trainAnalyzer('../trainingSet/data.neg', 'negative', 5000); //training with negative data 36 | $sat->trainAnalyzer('../trainingSet/data.pos', 'positive', 5000); //trainign with positive data 37 | 38 | 39 | The analyzeSentence method accepts a sentence as parameter and score it as a positive, 40 | negative or neutral sentiment. it returns an array that looks like this: 41 | 42 | array 43 | ( 44 | 'sentiment' => '[the sentiment value returned]', 45 | 'accuracy' => array 46 | ( 47 | 'positivity'=> 'A floating point number showing us the probability of the sentence being positive', 48 | 'negativity' => 'A floating point number showing us the probability of the sentence being negative', 49 | ), 50 | ) 51 | 52 | An example is shown below: 53 | 54 | `$sentence1 = 'while the performances are often engaging , this loose collection of largely improvised numbers would probably have worked better as a one-hour tv documentary . ';` 55 | `$sentence2 = 'edited and shot with a syncopated style mimicking the work of his subjects , pray turns the idea of the documentary on its head , making it rousing , invigorating fun lacking any mtv puffery . ';` 56 | 57 | $sentimentAnalysisOfSentence1 = $sat->analyzeSentence($sentence1); 58 | 59 | $resultofAnalyzingSentence1 = $sentimentAnalysisOfSentence1['sentiment']; 60 | $probabilityofSentence1BeingPositive = $sentimentAnalysisOfSentence1['accuracy']['positivity']; 61 | $probabilityofSentence1BeingNegative = $sentimentAnalysisOfSentence1['accuracy']['negativity']; 62 | 63 | $sentimentAnalysisOfSentence2 = $sat->analyzeSentence($sentence2); 64 | 65 | $resultofAnalyzingSentence2 = $sentimentAnalysisOfSentence2['sentiment']; 66 | $probabilityofSentence2BeingPositive = $sentimentAnalysisOfSentence1['accuracy']['positivity']; 67 | $probabilityofSentence2BeingNegative = $sentimentAnalysisOfSentence1['accuracy']['negativity'];` 68 | 69 | The AnalyzeDocument method accepts the path to a text file as parameter. 70 | It analyzes the file and scores it as either a positive or a negative sentiment. It also 71 | returns an array with the same keys as the analyzeSentence method. 72 | 73 | An example is demonstrated below 74 | 75 | $documentLocation = '../trainingSet/review.txt'; 76 | $sentimentAnalysisOfDocument = $sat->analyzeDocument($documentLocation); 77 | $resultofAnalyzingDocument = $sentimentAnalysisOfDocument['sentiment']; 78 | $probabilityofDocumentBeingPositive = $sentimentAnalysisOfDocument['accuracy']['positivity']; 79 | $probabilityofDocumentBeingNegative = $sentimentAnalysisOfDocument['accuracy']['negativity']; -------------------------------------------------------------------------------- /src/SentimentAnalyzer.class.php: -------------------------------------------------------------------------------- 1 | . 6 | * All rights reserved. 7 | * 8 | * Redistribution and use in source and binary forms, with or without 9 | * modification, are permitted provided that the following conditions 10 | * are met: 11 | * 12 | * * Redistributions of source code must retain the above copyright 13 | * notice, this list of conditions and the following disclaimer. 14 | * 15 | * * Redistributions in binary form must reproduce the above copyright 16 | * notice, this list of conditions and the following disclaimer in 17 | * the documentation and/or other materials provided with the 18 | * distribution. 19 | * 20 | * * Neither the name of Samuel Adeshina nor the names of his 21 | * contributors may be used to endorse or promote products derived 22 | * from this software without specific prior written permission. 23 | * 24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER 25 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 27 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 28 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 29 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 30 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 31 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 32 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 34 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 | * POSSIBILITY OF SUCH DAMAGE. 36 | * 37 | * @package sentiment-analyzer 38 | * @author Samuel Adeshina 39 | * @copyright 2015 Samuel Adeshina 40 | * @since File available since Release 1.0.0 41 | *//* 42 | 43 | */ 44 | class SentimentAnalyzer 45 | { 46 | protected $arrSentiments = array(), 47 | $arrTypes = array("positive", "negative"), 48 | $arrWordType = array("positive" => 0, "negative" => 0), 49 | $arrSentenceType = array("positive" => 0, "negative" => 0), 50 | $cntWord = 0, 51 | $cntSentence = 0, 52 | $arrBayesDistribution = array("positive" => 0.5, "negative" => 0.5), 53 | $arrBayesDifference; 54 | 55 | public function __construct() 56 | { 57 | $this->arrBayesDifference = range(-1.0, 1.5, 0.1); 58 | } 59 | 60 | private function splitSentence($words) 61 | { 62 | preg_match_all('/\w+/', $words, $matches); 63 | return $matches; 64 | } 65 | 66 | public function insertTestData($testDataLocation, $testDataType, $testDataAmount = 0) 67 | { 68 | if (!in_array($testDataType, $this->arrTypes)) 69 | { 70 | throw new \Exception('Invalid Sentiment Type Encountered: A Sentiment Can Only Be Negative or Positive'); 71 | return false; 72 | } 73 | $amountTracker = 0; 74 | $testData = fopen($testDataLocation, "r"); 75 | while ($testDatum = fgets($testData)) 76 | { 77 | if ($amountTracker > $testDataAmount && $testDataAmount > 0) 78 | { 79 | break; 80 | } 81 | else 82 | { 83 | $amountTracker++; 84 | $this->cntSentence += 1; 85 | $this->arrSentenceType[$testDataType] += 1; 86 | $words = self::splitSentence($testDatum)[0]; 87 | foreach ($words as $word) 88 | { 89 | $this->arrWordType[$testDataType] += 1; 90 | $this->cntWord += 1; 91 | if (!isset($this->arrSentiments[$word][$testDataType])) 92 | { 93 | $this->arrSentiments[$word][$testDataType] = 0; 94 | } 95 | $this->arrSentiments[$word][$testDataType] += 1; 96 | } 97 | } 98 | } 99 | return true; 100 | } 101 | 102 | public function analyzeSentence($sentence) 103 | { 104 | foreach ($this->arrTypes as $type) 105 | { 106 | $this->arrBayesDistribution[$type] = $this->arrSentenceType[$type] / $this->cntSentence; 107 | } 108 | $sentimentScores = array('positive', 'negative'); 109 | $words = self::splitSentence($sentence)[0]; 110 | foreach ($this->arrTypes as $type) 111 | { 112 | $sentimentScores[$type] = 1; 113 | foreach($words as $word) 114 | { 115 | if (!isset($this->arrSentiments[$word][$type])) 116 | { 117 | $tracker = 0; 118 | } 119 | else 120 | { 121 | $tracker = $this->arrSentiments[$word][$type]; 122 | } 123 | $sentimentScores[$type] *= ($tracker + 1) / ($this->arrWordType[$type] + $this->cntWord); 124 | } 125 | $sentimentScores[$type] *= $this->arrBayesDistribution[$type]; 126 | } 127 | arsort($sentimentScores); 128 | 129 | if (key($sentimentScores) == 'positive') 130 | { 131 | $bayesDifference = $sentimentScores['positive'] / $sentimentScores['negative']; 132 | } 133 | else 134 | { 135 | $bayesDifference = $sentimentScores['negative'] / $sentimentScores['positive']; 136 | } 137 | $positivity = $sentimentScores['positive'] / ($sentimentScores['positive'] + $sentimentScores['negative']); 138 | $negativity = $sentimentScores['negative'] / ($sentimentScores['positive'] + $sentimentScores['negative']); 139 | if (in_array(round($bayesDifference, 1), $this->arrBayesDifference)) 140 | { 141 | $sentiment = 'Neutral'; 142 | } 143 | else 144 | { 145 | $sentiment = key($sentimentScores); 146 | } 147 | 148 | return array('sentiment'=>$sentiment, 'accuracy'=>array('positivity'=>$positivity, 'negativity'=>$negativity)); 149 | 150 | } 151 | 152 | public function analyzeDocument($documentLocation) 153 | { 154 | $documentHandle = fopen($documentLocation, 'r'); 155 | $positivity = 0; $negativity = 0; 156 | while ($sentence = fgets($documentHandle)) 157 | { 158 | $sentiment = self::analyzeSentence($sentence); 159 | if ($sentiment['sentiment'] == 'negative') 160 | { 161 | $negativity += 1; 162 | } 163 | else if ($sentiment['sentiment'] == 'positive') 164 | { 165 | $positivity += 1; 166 | } 167 | else 168 | { 169 | continue; 170 | } 171 | } 172 | $positivity = $positivity / ($positivity + $negativity); 173 | $negativity = $negativity / ($positivity + $negativity); 174 | 175 | if ($positivity > $negativity) 176 | { 177 | $sentiment = 'positive'; 178 | } 179 | else 180 | { 181 | $sentiment = 'negative'; 182 | } 183 | 184 | return array('sentiment' => $sentiment, 'accuracy'=>array('positivity'=>$positivity, 'negativity'=>$negativity)); 185 | } 186 | } 187 | ?> -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. 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However, as a 160 | special exception, the source code distributed need not include 161 | anything that is normally distributed (in either source or binary 162 | form) with the major components (compiler, kernel, and so on) of the 163 | operating system on which the executable runs, unless that component 164 | itself accompanies the executable. 165 | 166 | If distribution of executable or object code is made by offering 167 | access to copy from a designated place, then offering equivalent 168 | access to copy the source code from the same place counts as 169 | distribution of the source code, even though third parties are not 170 | compelled to copy the source along with the object code. 171 | 172 | 4. You may not copy, modify, sublicense, or distribute the Program 173 | except as expressly provided under this License. Any attempt 174 | otherwise to copy, modify, sublicense or distribute the Program is 175 | void, and will automatically terminate your rights under this License. 176 | However, parties who have received copies, or rights, from you under 177 | this License will not have their licenses terminated so long as such 178 | parties remain in full compliance. 179 | 180 | 5. You are not required to accept this License, since you have not 181 | signed it. However, nothing else grants you permission to modify or 182 | distribute the Program or its derivative works. These actions are 183 | prohibited by law if you do not accept this License. Therefore, by 184 | modifying or distributing the Program (or any work based on the 185 | Program), you indicate your acceptance of this License to do so, and 186 | all its terms and conditions for copying, distributing or modifying 187 | the Program or works based on it. 188 | 189 | 6. Each time you redistribute the Program (or any work based on the 190 | Program), the recipient automatically receives a license from the 191 | original licensor to copy, distribute or modify the Program subject to 192 | these terms and conditions. You may not impose any further 193 | restrictions on the recipients' exercise of the rights granted herein. 194 | You are not responsible for enforcing compliance by third parties to 195 | this License. 196 | 197 | 7. If, as a consequence of a court judgment or allegation of patent 198 | infringement or for any other reason (not limited to patent issues), 199 | conditions are imposed on you (whether by court order, agreement or 200 | otherwise) that contradict the conditions of this License, they do not 201 | excuse you from the conditions of this License. If you cannot 202 | distribute so as to satisfy simultaneously your obligations under this 203 | License and any other pertinent obligations, then as a consequence you 204 | may not distribute the Program at all. For example, if a patent 205 | license would not permit royalty-free redistribution of the Program by 206 | all those who receive copies directly or indirectly through you, then 207 | the only way you could satisfy both it and this License would be to 208 | refrain entirely from distribution of the Program. 209 | 210 | If any portion of this section is held invalid or unenforceable under 211 | any particular circumstance, the balance of the section is intended to 212 | apply and the section as a whole is intended to apply in other 213 | circumstances. 214 | 215 | It is not the purpose of this section to induce you to infringe any 216 | patents or other property right claims or to contest validity of any 217 | such claims; this section has the sole purpose of protecting the 218 | integrity of the free software distribution system, which is 219 | implemented by public license practices. Many people have made 220 | generous contributions to the wide range of software distributed 221 | through that system in reliance on consistent application of that 222 | system; it is up to the author/donor to decide if he or she is willing 223 | to distribute software through any other system and a licensee cannot 224 | impose that choice. 225 | 226 | This section is intended to make thoroughly clear what is believed to 227 | be a consequence of the rest of this License. 228 | 229 | 8. If the distribution and/or use of the Program is restricted in 230 | certain countries either by patents or by copyrighted interfaces, the 231 | original copyright holder who places the Program under this License 232 | may add an explicit geographical distribution limitation excluding 233 | those countries, so that distribution is permitted only in or among 234 | countries not thus excluded. In such case, this License incorporates 235 | the limitation as if written in the body of this License. 236 | 237 | 9. The Free Software Foundation may publish revised and/or new versions 238 | of the General Public License from time to time. Such new versions will 239 | be similar in spirit to the present version, but may differ in detail to 240 | address new problems or concerns. 241 | 242 | Each version is given a distinguishing version number. If the Program 243 | specifies a version number of this License which applies to it and "any 244 | later version", you have the option of following the terms and conditions 245 | either of that version or of any later version published by the Free 246 | Software Foundation. If the Program does not specify a version number of 247 | this License, you may choose any version ever published by the Free Software 248 | Foundation. 249 | 250 | 10. If you wish to incorporate parts of the Program into other free 251 | programs whose distribution conditions are different, write to the author 252 | to ask for permission. For software which is copyrighted by the Free 253 | Software Foundation, write to the Free Software Foundation; we sometimes 254 | make exceptions for this. Our decision will be guided by the two goals 255 | of preserving the free status of all derivatives of our free software and 256 | of promoting the sharing and reuse of software generally. 257 | 258 | NO WARRANTY 259 | 260 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 266 | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 267 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 268 | REPAIR OR CORRECTION. 269 | 270 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278 | POSSIBILITY OF SUCH DAMAGES. 279 | 280 | END OF TERMS AND CONDITIONS 281 | 282 | How to Apply These Terms to Your New Programs 283 | 284 | If you develop a new program, and you want it to be of the greatest 285 | possible use to the public, the best way to achieve this is to make it 286 | free software which everyone can redistribute and change under these terms. 287 | 288 | To do so, attach the following notices to the program. It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | {description} 294 | Copyright (C) {year} {fullname} 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | {signature of Ty Coon}, 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | 341 | --------------------------------------------------------------------------------