<?php
if (!defined('BASEPATH'))
exit('No direct script access allowed');
function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
{
$defaults = array('word' => '', 'word_length' => 6, 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200);
foreach ($defaults as $key => $val) {
if (!is_array($data)) {
if (!isset($$key) or $$key == '') {
$$key = $val;
}
} else {
$$key = (!isset($data[$key])) ? $val : $data[$key];
}
}
if ($img_path == '' or $img_url == '') {
return false;
}
if (!@is_dir($img_path)) {
return false;
}
if (!is_really_writable($img_path)) {
return false;
}
if (!extension_loaded('gd')) {
return false;
}
list($usec, $sec) = explode(" ", microtime());
$now = ((float)$usec + (float)$sec);
$current_dir = @opendir($img_path);
while ($filename = @readdir($current_dir)) {
if ($filename != "." and $filename != ".." and $filename != "index.html") {
$name = str_replace(".jpg", "", $filename);
if (($name + $expiration) < $now) {
@unlink($img_path . $filename);
}
}
}
@closedir($current_dir);
$pool = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$str = '';
for ($i = 0; $i < 6; $i++) {
$str .= substr($pool, mt_rand(0, strlen($pool) - 1), 1);
}
$text = $str;
$im = @imagecreatefromjpeg('".base_url()."\images\captch.jpg');
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
$font = '".base_url()."system\fonts\Alan Den.ttf';
imagettftext($im, 30, 0, 10, 40, $black, $font, $text);
$now = date('YmdHis');
$img_name = $now . '.jpg';
imagejpeg($im, $img_path . $img_name);
$img = "<img src=\"" . base_url() . "$img_url$img_name\" style=\"border:0;\" alt=\" \" />";
imagedestroy($im);
return array('word' => $text, 'time' => $now, 'image' => $img);
}
?>
I am using the above code to generate the captcha image in codeigniter. When i use this code got error message as
PHP Error was encountered Severity: Warning Message: imagecolorallocate(): supplied argument is not a valid Image resource Filename: plugins/captcha_pi.php Line Number: 236
A PHP Error wasencountered Severity: Warning Message: imagecolorallocate(): supplied argument is not a valid Image resource Filename: plugins/captcha_pi.php Line Number: 237
A PHP Error was encountered Severity: Warning Message: imagecolorallocate(): supplied argument is not a valid Image resource Filename: plugins/captcha_pi.php Line Number: 238
A PHP Error was encountered Severity: Warning Message: imagettftext() expects parameter 1 to be resource, boolean given Filename: plugins/captcha_pi.php Line Number: 251
A PHP Error was encountered Severity: Warning Message: imagejpeg(): supplied argument is not a valid Image resource Filename: plugins/captcha_pi.php Line Number: 259
A PHP Error was encountered Severity: Warning Message: imagedestroy(): supplied argument is not a valid Image resource Filename: plugins/captcha_pi.php Line Number: 263
Please give me the solution for this if anybody knows