├── README.md
├── ex1.php
├── ex10.php
├── ex11.php
├── ex12.php
├── ex13.php
├── ex14.php
├── ex15.php
├── ex16.php
├── ex17.php
├── ex18.php
├── ex19.php
├── ex2.php
├── ex20.php
├── ex21.php
├── ex22.php
├── ex23.php
├── ex24.php
├── ex25.php
├── ex26.php
├── ex27.php
├── ex28.php
├── ex29.php
├── ex3.php
├── ex30.php
├── ex31.php
├── ex32.php
├── ex33.php
├── ex34.php
├── ex35.php
├── ex36.php
├── ex37.php
├── ex38.php
├── ex39.php
├── ex4.php
├── ex40.php
├── ex41.php
├── ex42.php
├── ex43.php
├── ex44.php
├── ex5.php
├── ex6.php
├── ex7.php
├── ex8.php
└── ex9.php


/README.md:
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1 | # PHP-Diary
2 | A collection of basic PHP codes for concept clearing. Also much useful for backend activities.
3 | 
4 | 
5 | ![cc](https://user-images.githubusercontent.com/64016811/114978122-6a4b1f80-9ea6-11eb-871a-29f201c66f62.png)
6 | 
7 | 


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/ex1.php:
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1 | 
2 | <?php
3 | phpinfo();
4 | ?>


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/ex10.php:
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 1 | <?php
 2 | if (!empty($_SERVER['HTTPS'])) 
 3 | {
 4 |   echo 'https is enabled';
 5 | }
 6 | else
 7 | {
 8 | echo 'http is enabled'."\n";
 9 | }
10 | ?>
11 | 


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/ex11.php:
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1 | <?php
2 | header('Location: https://mainakfolio.github.io/');
3 | ?>
4 | 


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/ex12.php:
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 1 | <?php
 2 | // pass valid/invalid emails
 3 | $email = "mail@example.com";
 4 | if (filter_var($email, FILTER_VALIDATE_EMAIL)) 
 5 | {
 6 |      echo '"' . $email . '" = Valid'."\n";
 7 | }
 8 | else 
 9 | {
10 |      echo '"' . $email . '" = Invalid'."\n";
11 | }
12 | ?>
13 | 


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/ex13.php:
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 1 | <?php
 2 | $a=1000;
 3 | $b=1200;
 4 | $c=1400;
 5 | echo "<table border=1 cellspacing=0 cellpading=0>
 6 | <tr> <td><font color=blue>Salary of Mr. A is</td> <td>$a$</font></td></tr> 
 7 | <tr> <td><font color=blue>Salary of Mr. B is</td> <td>$b$</font></td></tr>
 8 | <tr> <td><font color=blue>Salary of Mr. C is</td> <td>$c$</font></td></tr>
 9 | </table>";
10 | ?>
11 | 


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/ex14.php:
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1 | <?php
2 | $all_lines = file('https://www.w3schools.com/');
3 | foreach ($all_lines as $line_num => $line)
4 |  {
5 |  	echo "Line No.-{$line_num}: " . htmlspecialchars($line) . "\n";
6 |  }
7 | ?>
8 | 


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/ex15.php:
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1 | <?php
2 | $current_file_name = basename($_SERVER['PHP_SELF']);
3 | $file_last_modified = filemtime($current_file_name); 
4 | echo "Last modified " . date("l, dS F, Y, h:ia", $file_last_modified)."\n";
5 | ?>


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/ex16.php:
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1 | <?php
2 | $file = basename($_SERVER['PHP_SELF']); 
3 | $no_of_lines = count(file($file)); 
4 | echo "There are $no_of_lines lines in $file"."\n";
5 | ?>
6 | 


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/ex17.php:
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1 | <?php
2 | echo 'Current PHP version : ' . phpversion();
3 | echo phpversion('tidy')."\n";
4 | ?>
5 | 


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/ex18.php:
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1 | <?php
2 | // current time
3 |   echo date('h:i:s') . "\n";
4 |   // sleep for 5 seconds
5 |   sleep(5);
6 |   // wake up
7 |   echo date('h:i:s')."\n";
8 | ?>
9 | 


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/ex19.php:
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1 | <?php
2 | $d = 'A00';
3 |   for ($n=0; $n<5; $n++)
4 | {
5 | echo ++$d ."\n";
6 | }
7 | ?>
8 | 


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/ex2.php:
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1 | //commenting in php
2 | <?php
3 | echo "Tomorrow I \'ll learn PHP global variables."."\n"; 
4 | echo "This is a bad command : del c:\\*.*"."\n"; 
5 | ?>
6 | 


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/ex20.php:
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1 | <?php
2 | echo $x;
3 |   print_r(error_get_last());
4 | ?>
5 | 


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/ex21.php:
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 1 | <?php
 2 | function trinary_Test($n){
 3 | $r = $n > 30
 4 | ? "greater than 30"
 5 | : ($n > 20
 6 | ? "greater than 20"
 7 | : ($n >10
 8 | ? "greater than 10"
 9 | : "Input a number atleast greater than 10!")); 
10 | echo $n." : ".$r."\n";
11 | }
12 | trinary_Test(32);
13 | trinary_Test(21);
14 | trinary_Test(12);
15 | trinary_Test(4);
16 | ?>
17 | 


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/ex22.php:
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1 | <?php
2 | $full_url = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
3 |   echo $full_url."\n";
4 | ?>
5 | 


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/ex23.php:
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 1 | <?php
 2 | if (version_compare(PHP_VERSION, '6.0.0') >= 0) {
 3 | echo 'I am at least PHP version 6.0.0, my version: ' . PHP_VERSION . "\n";
 4 | }
 5 | if (version_compare(PHP_VERSION, '5.3.0') >= 0) {
 6 | echo 'I am at least PHP version 5.3.0, my version: ' . PHP_VERSION . "\n";
 7 | }
 8 | 
 9 | if (version_compare(PHP_VERSION, '5.0.0', '>=')) {
10 | echo 'I am using PHP 5, my version: ' . PHP_VERSION . "\n";
11 | }
12 | 
13 | if (version_compare(PHP_VERSION, '5.0.0', '<')) {
14 | echo 'I am using PHP 4, my version: ' . PHP_VERSION . "\n";
15 | }
16 | ?>
17 | 


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/ex24.php:
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1 | <?php
2 | echo 'Current script owner: ' . get_current_user()."\n";
3 | ?>
4 | 


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/ex25.php:
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1 | <?php
2 | // getenv() gets the value of an environment variable
3 | $rd = getenv('DOCUMENT_ROOT');
4 | echo $rd."\n";
5 | ?>
6 | 


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/ex26.php:
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1 | <?php
2 | function test($x, $y) 
3 | {
4 |     return $x == $y ? ($x + $y)*3 : $x + $y;
5 | }
6 | echo test(1, 2)."\n";
7 | echo test(3, 2)."\n";
8 | echo test(2, 2)."\n";   
9 | 


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/ex27.php:
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 1 | <?php
 2 | function test($n) 
 3 | {
 4 |      $x = 51;
 5 | 
 6 |      if ($n > $x)
 7 |      {
 8 |        return ($n - $x)*3;
 9 |      }
10 |    return $x - $n;
11 | }
12 | echo test(53)."\n";
13 | echo test(30)."\n";
14 | echo test(51)."\n";  
15 | 


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/ex28.php:
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 1 | <?php
 2 | function test($x, $y) 
 3 | {
 4 |     return ($x == 30) || ($y == 30) || ($x + $y == 30);
 5 | }
 6 | 
 7 | var_dump(test(30, 0));
 8 | var_dump( test(25, 5));
 9 | var_dump( test(20, 30));
10 | var_dump(test(20, 25));  
11 | 


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/ex29.php:
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 1 | <?php
 2 | function test($x) 
 3 | {
 4 |    if(abs($x - 100) <= 10 || abs($x - 200) <= 10)
 5 |             return true;
 6 |      return false;
 7 | }
 8 | 
 9 | var_dump(test(103));
10 | var_dump(test(90));
11 | var_dump(test(89));  
12 | 


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/ex3.php:
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 1 | <?php
 2 | $var = 'PHP Tutorial';
 3 | ?>
 4 | <!DOCTYPE html>
 5 | <html>
 6 | <head>
 7 |   <meta http-equiv="content-type" content="text/html; charset=utf-8">
 8 |   <title><?php echo $var; ?> - W3resource!</title>
 9 |   </head>
10 |   <body>
11 |   <h3><?php echo $var; ?></h3>
12 |   <p>PHP, an acronym for Hypertext Preprocessor, is a widely-used open source general-purpose scripting language. It is a cross-platform, HTML embedded server-side scripting language and is especially suited for web development.</p>
13 |   <p><a href="https://www.w3resource.com/php/php-home.php">Go to the <?php echo $var; ?></a>.</p>
14 | </body>
15 | </html>
16 | 


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/ex30.php:
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 1 | <?php
 2 | function test($s) 
 3 | {
 4 |   if (strlen($s) > 2 && substr($s,0, 2) == "if")
 5 |             {
 6 |                 return $s;
 7 |             }
 8 |       return "if ".$s;
 9 | }
10 | 
11 | echo test("if else")."\n";
12 | echo test("else")."\n";  
13 | 


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/ex31.php:
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 1 | <?php
 2 | function test($s, $n) 
 3 | {
 4 |    return substr($s,0,$n).substr($s,$n+1,strlen($s)-$n);
 5 | }
 6 | 
 7 | echo test("Python", 1)."\n";
 8 | echo test("Python", 0)."\n";
 9 | echo test("Python", 4)."\n";
10 | 


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/ex32.php:
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 1 | <?php
 2 | function test($str) 
 3 | {
 4 |    return strlen($str) > 1 ? substr($str, strlen($str) - 1).substr($str, 1, strlen($str) - 2). substr($str, 0, 1) : $str;
 5 |    
 6 | }
 7 | 
 8 | echo test("abcd")."\n";
 9 | echo test("a")."\n";
10 | echo test("xy")."\n";
11 | 


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/ex33.php:
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 1 | <?php
 2 | function test($str) 
 3 | {
 4 |    return strlen($str) < 2 ? $str : substr($str, 0, 2).substr($str, 0, 2).substr($str, 0, 2).substr($str, 0, 2);
 5 |    
 6 | }
 7 | 
 8 | echo test("C Sharp")."\n";
 9 | echo test("JS")."\n";
10 | echo test("a")."\n";
11 | 


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/ex34.php:
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 1 | <?php
 2 | function test($str) 
 3 | {
 4 |    $s = substr($str, strlen($str) - 1);
 5 |       return $s.$str.$s;
 6 |    
 7 | }
 8 | 
 9 | echo test("Red")."\n";
10 | echo test("Green")."\n";
11 | echo test("1")."\n";
12 | 


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/ex35.php:
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 1 | <?php
 2 | function test($n) 
 3 | {
 4 |    return $n % 3 == 0 || $n % 7 == 0;
 5 | }
 6 | 
 7 | var_dump(test(3));
 8 | var_dump(test(14));
 9 | var_dump(test(12));
10 | var_dump(test(37));
11 | 


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/ex36.php:
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 1 | <?php
 2 | function test($str) 
 3 | {
 4 |    if (strlen($str) < 3)
 5 |             {
 6 |                 return $str.$str.$str;
 7 |             }
 8 |             else
 9 |             {
10 |                 $front = substr($str, 0, 3);
11 |                 return $front.$str.$front;
12 |             }
13 |         }
14 | echo test("Python")."\n";
15 | echo test("JS")."\n";
16 | echo test("Code")."\n";
17 | 


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/ex37.php:
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 1 | <?php
 2 | function test($str) 
 3 | {
 4 |    return (strlen($str) < 3 && $str=="C#") || (substr($str,0,2) == "C#" && substr($str,2,1) == ' ');
 5 | }
 6 | 
 7 | var_dump(test("C# Sharp"));
 8 | var_dump(test("C#"));
 9 | var_dump(test("C++"));
10 | 


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/ex38.php:
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 1 | <?php
 2 | function test($temp1, $temp2) 
 3 | {
 4 |    return $temp1 < 0 && $temp2 > 100 || $temp2 < 0 && $temp1 > 100;
 5 | }
 6 | 
 7 | var_dump(test(120, -1));
 8 | var_dump(test(-1, 120));
 9 | var_dump(test(2, 120));
10 | 


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/ex39.php:
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 1 | <?php
 2 | function test($x, $y) 
 3 | {
 4 |     return ($x >= 100 && $x <= 200) || ($y >= 100 && $y <= 200);
 5 | }
 6 | 
 7 | var_dump(test(100, 199));
 8 | var_dump(test(250, 300));
 9 | var_dump(test(105, 190));
10 | 


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/ex4.php:
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 1 | <!DOCTYPE html>
 2 | <html>
 3 | <head>
 4 |    <title></title>
 5 |    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 6 |    </head>
 7 |    <body>
 8 |    <form method='POST'>
 9 |    <h2>Please input your name:</h2>
10 |  <input type="text" name="name">
11 |  <input type="submit" value="Submit Name">
12 |  </form>
13 | <?php
14 | //Retrieve name from query string and store to a local variable
15 | $name = $_POST['name'];
16 | echo "<h3> Hello $name </h3>";
17 | ?>
18 | </body>
19 | </html>
20 | 


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/ex40.php:
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 1 | <?php
 2 | function test($x, $y, $z) 
 3 | {
 4 |     return ($x >= 20 && $x <= 50) || ($y >= 20 && $y <= 50) || ($z >= 20 && $z <= 50);
 5 | }
 6 | 
 7 | var_dump(test(11, 20, 12));
 8 | var_dump(test(30, 30, 17));
 9 | var_dump(test(25, 35, 50));
10 | var_dump(test(15, 12, 8));
11 | 


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/ex41.php:
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 1 | <?php
 2 | function test($s) 
 3 | {
 4 |    return substr($s, 1, 2) == "yt" ? substr($s, 0, 1).substr($s, 3, strlen($s)-2) : $s;
 5 | }
 6 | 
 7 | echo test("Python")."\n";
 8 | echo test("ytade")."\n";
 9 | echo test("jsues")."\n";
10 | 


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/ex42.php:
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 1 | <?php
 2 | function test($x, $y) 
 3 | {
 4 |    $n = 100;
 5 |    $val = abs($x - $n);
 6 |    $val2 = abs($y - $n);
 7 |    return $val == $val2 ? 0 : ($val < $val2 ? $x : $y);
 8 | }
 9 | 
10 | echo test(78, 95)."\n";
11 | echo test(95, 95)."\n";
12 | echo test(99, 70)."\n";
13 | 


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/ex43.php:
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1 | <?php
2 | $color = array('white', 'green', 'red', 'blue', 'black');
3 | echo "The memory of that scene for me is like a frame of film forever frozen at that moment: the $color[2] carpet, the $color[1] lawn, the $color[0] house, the leaden sky. The new president and his first lady. - Richard M. Nixon"."\n";
4 | ?>
5 | 


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/ex44.php:
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 1 | <?php
 2 | $color = array('white', 'green', 'red');
 3 | foreach ($color as $c)
 4 | {
 5 | echo "$c, ";
 6 | }
 7 | sort($color);
 8 | echo "<ul>";
 9 | foreach ($color as $y)
10 | {
11 | echo "<li>$y</li>";
12 | }
13 | echo "</ul>";
14 | ?>
15 | 


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/ex5.php:
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1 | <?php
2 | echo "Your User Agent is :" . $_SERVER ['HTTP_USER_AGENT'];
3 | ?>
4 | 


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/ex6.php:
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1 | <?php
2 | $current_file_name = basename($_SERVER['PHP_SELF']);
3 | echo $current_file_name."\n";
4 | ?>
5 | 


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/ex7.php:
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1 | <?php
2 | $current_file_name = basename($_SERVER['PHP_SELF']);
3 | echo $current_file_name."\n";
4 | ?>
5 | 


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/ex8.php:
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1 | <?php
2 | $current_file_name = basename($_SERVER['PHP_SELF']);
3 | echo $current_file_name."\n";
4 | ?>
5 | 


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/ex9.php:
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1 | <?php
2 | $text = 'PHP Tutorial';
3 | $text = preg_replace('/(\b[a-z])/i','<span style="color:red;">\1</span>',$text);
4 | echo $text;
5 | ?>
6 | 


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