├── fonts
    ├── VeraBd.ttf
    ├── arialbd.ttf
    └── verdanab.ttf
├── .project
├── README.txt
└── application
    └── libraries
        └── antispam.php


/fonts/VeraBd.ttf:
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https://raw.githubusercontent.com/neotohin/Captcha-library-for-CodeIgniter/HEAD/fonts/VeraBd.ttf


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/fonts/arialbd.ttf:
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https://raw.githubusercontent.com/neotohin/Captcha-library-for-CodeIgniter/HEAD/fonts/arialbd.ttf


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/fonts/verdanab.ttf:
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https://raw.githubusercontent.com/neotohin/Captcha-library-for-CodeIgniter/HEAD/fonts/verdanab.ttf


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/.project:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <projectDescription>
 3 | 	<name>captcha library</name>
 4 | 	<comment></comment>
 5 | 	<projects>
 6 | 	</projects>
 7 | 	<buildSpec>
 8 | 	</buildSpec>
 9 | 	<natures>
10 | 	</natures>
11 | </projectDescription>
12 | 


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/README.txt:
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 1 | 	Original Source : Pavel Tzonkov <pavelc@users.sourceforge.net>
 2 | 	Source Link : http://gscripts.net/free-php-scripts/Anti_Spam_Scripts/Image_Validator/details.html
 3 | 	
 4 | 	CodeIgniter library created by : 
 5 | 		Mohammad Amzad Hossain
 6 | 		http://tohin.wordpress.com
 7 | 		
 8 | 	
 9 | 	License: Have Fun 
10 | 	
11 | 	# How To Use In CodeIgniter 
12 | 	
13 | 		// First Store Some fonts in fonts folder 
14 | 		// You can choose a font_name by overriding default value or this 
15 | 		// will randomly select a font.
16 | 		
17 | 	
18 | 		// In Controller 
19 | 		
20 | 			$this->load->library('antispam');
21 | 			$configs = array(
22 | 					'img_path' => './captcha/',
23 | 					'img_url' => base_url() . 'captcha/',
24 | 					'img_height' => '50',
25 | 				);			
26 | 			$captcha = $this->antispam->get_antispam_image($configs);
27 | 			
28 | 		// $captcha is an array exmaple
29 | 		//  array('word' => 'sfsdf', 'time' => time , 'image' => '<img .... ');
30 | 		
31 | 		
32 | 		// In View Print the $captcha['image'] to show captcha image.
33 | 		
34 | 		
35 | 	// Future Extension 
36 | 	
37 | 		Generated Captcha images always stored in captcha folder which is memory consuming
38 | 		unless you clear them out manually. 
39 | 		
40 | 		Looking for a feasible idea to delete them all.
41 | 		
42 | 		
43 | Available Parameters FOR Configs: 
44 | 
45 | 	'img_url' 		=>  Image URL 
46 | 	'img_path'		=> Image PATH
47 | 	'img_width'		=> Image Width
48 | 	'img_height' 	=> Image Height
49 | 
50 | 	'font_name'		=> Font Name example Test.ttp
51 | 	'font_path' 	=> FONT PATH
52 | 	
53 | 	'font_size'		=> 	15
54 | 	
55 | 	'char_set' 		=> "ABCDEFGHJKLMNPQRSTUVWXYZ2345689";
56 | 	'char_length' 	=>	integer captcha word length in character
57 | 	
58 | 	'char_color' 	=> 
59 | 						Example :   "#880000,#008800,#000088,#888800,#880088,#008888,#000000";  
60 | 						This colors will be randomly use for character coloring.
61 | 	
62 | 	
63 | 	
64 | 	'line_count'	=>	10;		Number of lines to Create Noise	
65 | 	'line_color'	=> 
66 | 						Example: "#DD6666,#66DD66,#6666DD,#DDDD66,#DD66DD,#66DDDD,#666666"
67 | 						This colors will be randomly use for line coloring.
68 | 	
69 | 	 
70 | 	'bg_color'		=>	'#FFFFFF';		Captcha Image Background Color
71 | 


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/application/libraries/antispam.php:
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  1 | <?php if (!defined('BASEPATH')) exit('No direct script access allowed');
  2 | 
  3 | 
  4 | /**
  5 | 	Original Source : Pavel Tzonkov <pavelc@users.sourceforge.net>
  6 | 	Source Link : http://gscripts.net/free-php-scripts/Anti_Spam_Scripts/Image_Validator/details.html
  7 | 	
  8 | 	CodeIgniter library created by : 
  9 | 		Mohammad Amzad Hossain
 10 | 		http://tohin.wordpress.com
 11 | 		
 12 | 	
 13 | 	License: Have Fun 
 14 | 	
 15 | 	# How To Use In CodeIgniter 
 16 | 	
 17 | 		// First Store Some fonts in fonts folder 
 18 | 		// You can choose a font_name by overriding default value or this 
 19 | 		// will randomly select a font.
 20 | 		
 21 | 	
 22 | 		// In Controller 
 23 | 		
 24 | 			$this->load->library('antispam');
 25 | 			$configs = array(
 26 | 					'img_path' => './captcha/',
 27 | 					'img_url' => base_url() . 'captcha/',
 28 | 					'img_height' => '50',
 29 | 				);			
 30 | 			$captcha = $this->antispam->get_antispam_image($configs);
 31 | 			
 32 | 		// $captcha is an array exmaple
 33 | 		//  array('word' => 'sfsdf', 'time' => time , 'image' => '<img .... ');
 34 | 		
 35 | 		
 36 | 		// In View Print the $captcha['image'] to show captcha image.
 37 | 		
 38 | 		
 39 | 	// Future Extension 
 40 | 	
 41 | 		Generated Captcha images always stored in captcha folder which is memory consuming
 42 | 		unless you clear them out manually. 
 43 | 		
 44 | 		Looking for a feasible idea to delete them all.
 45 | 		
 46 | 	
 47 | */
 48 | 
 49 | class Antispam {
 50 | 
 51 | 
 52 | 	/*
 53 | 		You can overrite All this variables during initialization
 54 | 	*/
 55 | 
 56 | 	var $img_url		=   '' ; 	// Image URL
 57 | 	var $img_path 		=   './captcha/'; // Image path
 58 | 	var $img_width 		= 	120;   	// CODE_WIDTH
 59 | 	var $img_height 	= 	30;		// CODE_HEIGHT	
 60 | 
 61 | 	var $font_name		= 	FALSE;		// test.ttf
 62 | 	var $font_path 		= 	'./fonts';  // PATH_TTF	
 63 | 	var $fonts 			=   array();  	// Collect fonts name from fonts folder
 64 | 	var $font_size		=  	15; 	// CODE_FONT_SIZE
 65 | 	
 66 | 	var $char_set 		= "ABCDEFGHJKLMNPQRSTUVWXYZ2345689";	//CODE_ALLOWED_CHARS
 67 | 	var $char_length 	= 	5;		// CODE_CHARS_COUNT
 68 | 	
 69 | 	var $char_color 	=   "#880000,#008800,#000088,#888800,#880088,#008888,#000000";  // CODE_CHAR_COLORS
 70 | 	var $char_colors	= 	array();  // array from $char_color
 71 | 	
 72 | 	
 73 | 	var $line_count		=	10;		// CODE_LINES_COUNT
 74 | 	var $line_color		=  "#DD6666,#66DD66,#6666DD,#DDDD66,#DD66DD,#66DDDD,#666666"; 	// CODE_LINE_COLORS
 75 | 	var $line_colors 	= 	array();  // array from $line_color
 76 |  
 77 | 	var $bg_color		=	'#FFFFFF';		// CODE_BG_COLOR
 78 | 	
 79 | 
 80 | 	// Initialization for Captcha Image
 81 | 	
 82 | 	function get_antispam_image( $override = array() ) {
 83 | 	
 84 | 		if( is_array( $override) )
 85 | 		{
 86 | 			foreach ( $override as  $key => $value) {
 87 | 				
 88 | 				if( isset( $this->$key ))
 89 | 					$this->$key = $value;
 90 | 			}			
 91 | 		}
 92 |  	   
 93 | 		$this->line_colors = preg_split("/,\s*?/", $this->line_color );
 94 | 		$this->char_colors = preg_split("/,\s*?/", $this->char_color );
 95 | 		
 96 | 		$this->fonts = $this->collect_files( $this->font_path, "ttf");
 97 | 	   
 98 | 	 	
 99 | 		$img = imagecreatetruecolor( $this->img_width, $this->img_height);
100 | 		imagefilledrectangle($img, 0, 0, $this->img_width - 1, $this->img_height - 1, $this->gd_color( $this->bg_color ));
101 | 		
102 | 				
103 | 		// Draw lines
104 | 		for ($i = 0; $i < $this->line_count; $i++)
105 | 			imageline($img,
106 | 				rand(0, $this->img_width  - 1),
107 | 				rand(0, $this->img_height - 1),
108 | 				rand(0, $this->img_width  - 1),
109 | 				rand(0, $this->img_height - 1),
110 | 				$this->gd_color($this->line_colors[rand(0, count($this->line_colors) - 1)])
111 | 			);
112 | 			
113 | 		// Draw code
114 | 
115 | 		$code = "";
116 | 		$y = ($this->img_height / 2) + ( $this->font_size / 2);
117 | 		
118 | 		for ($i = 0; $i < $this->char_length ; $i++) {
119 | 		
120 | 			$color = $this->gd_color( $this->char_colors[rand(0, count($this->char_colors) - 1)] );
121 | 			$angle = rand(-30, 30);
122 | 			$char = substr( $this->char_set, rand(0, strlen($this->char_set) - 1), 1);
123 | 			
124 | 			
125 | 			$sel_font = $this->font_name;
126 | 			if( $this->font_name == FALSE )
127 | 				$sel_font = $this->fonts[rand(0, count($this->fonts) - 1)];
128 | 			 
129 | 				
130 | 				
131 | 			$font = $this->font_path . "/" . $sel_font;
132 | 			
133 | 			$x = (intval(( $this->img_width / $this->char_length) * $i) + ( $this->font_size / 2));
134 | 			$code .= $char;
135 | 			
136 | 			imagettftext($img, $this->font_size, $angle, $x, $y, $color, $font, $char);
137 | 			
138 | 		}
139 | 		
140 | 		// Storing Image 
141 | 		
142 | 		list($usec, $sec) = explode(" ", microtime());
143 | 		$now = ((float)$usec + (float)$sec);
144 | 		
145 | 		$img_name =  $now . '.jpg';
146 | 		
147 | 		ImageJPEG( $img,  $this->img_path.$img_name);
148 | 		
149 | 		$img_markup = '<img src="' . $this->img_url . $img_name . '" width=" ' . $this->img_width
150 | 					. '" height="' . $this->img_height . '" style="border:0;" alt=" " />';
151 |  	   
152 | 		ImageDestroy($img);
153 | 		
154 | 		return array('word' => $code, 'time' => $now, 'image' => $img_markup);
155 | 	   
156 | 	}	
157 | 		
158 | 		
159 | 	function gd_color($html_color) {
160 | 		return preg_match('/^#?([\dA-F]{6})$/i', $html_color, $rgb)
161 | 		  ? hexdec($rgb[1]) : false;
162 | 	}
163 | 
164 | 
165 | 	function collect_files($dir, $ext) {
166 | 		if (false !== ($dir = opendir($dir))) {
167 | 			$files = array();
168 | 
169 | 			while (false !== ($file = readdir($dir)))
170 | 				if (preg_match("/\\.$ext\$/i", $file))
171 | 					$files[] = $file;
172 | 
173 | 			return $files;
174 | 
175 | 		} else
176 | 			return false;
177 | 	}
178 | 	
179 | 
180 | 
181 | }
182 | 


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