37 lines
1.4 KiB
PHP
37 lines
1.4 KiB
PHP
<?php
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session_start();
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if ( !defined('ABSPATH') ) define('ABSPATH', dirname(__FILE__) . '/');
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function random($tab) {
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return $tab[array_rand($tab)];
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}
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$chars = '0123456789';
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$char1 = mt_rand( 0, strlen($chars) - 1 );
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$char2 = mt_rand( 0, strlen($chars) - 1 );
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$_SESSION['captcha'] = md5((int)$char1 + (int)$char2);
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// polices utilisées
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$fonts = glob('polices/*.woff');
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// création de l'image captcha
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$image = imagecreatefrompng('captcha.png');
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// couleurs des caractères
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$colors = array ( imagecolorallocate($image, 238, 238, 238),
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imagecolorallocate($image, 51, 51, 51),
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imagecolorallocate($image, 0, 102, 153),
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imagecolorallocate($image, 204, 0, 51),
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imagecolorallocate($image, 255, 51, 51),
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imagecolorallocate($image, 51, 255, 51),
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imagecolorallocate($image, 255, 255, 51) );
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// positions, polices, caractères et couleurs randomisées
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imagettftext($image, 28, -10, 7, 50, random($colors), ABSPATH .'/'. random($fonts), $char1);
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imagettftext($image, 28, 0, 50, 50, random($colors), ABSPATH .'/'. 'polices/Eskiula.woff', '+');
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imagettftext($image, 28, -35, 75, 50, random($colors), ABSPATH .'/'. random($fonts), $char2);
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imagettftext($image, 28, 0, 125, 50, random($colors), ABSPATH .'/'. 'polices/Eskiula.woff', '=');
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header('Content-Type: image/png');
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imagepng($image);
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imagedestroy($image);
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?>
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