rechargement du nouveau captcha

core/vendor/captcha/captcha.php

@@ -0,0 +1,36 @@
+<?php
+session_start();
+if ( !defined('ABSPATH') ) define('ABSPATH', dirname(__FILE__) . '/');
+
+function random($tab) {
+    return $tab[array_rand($tab)];
+}
+
+$chars = '0123456789';
+
+$char1 = mt_rand( 0, strlen($chars) - 1 );
+$char2 = mt_rand( 0, strlen($chars) - 1 );
+$_SESSION['captcha'] = md5((int)$char1 + (int)$char2);
+
+// polices utilisées
+$fonts = glob('polices/*.ttf');
+// création de l'image captcha
+$image = imagecreatefrompng('captcha.png');
+// couleurs des caractères
+$colors = array ( imagecolorallocate($image,  238, 238, 238),
+                  imagecolorallocate($image,  51, 51, 51),
+                  imagecolorallocate($image,  0, 102, 153),
+                  imagecolorallocate($image, 204, 0, 51),
+                  imagecolorallocate($image, 255, 51, 51),
+                  imagecolorallocate($image, 51, 255, 51),
+                  imagecolorallocate($image, 255, 255, 51) );
+// positions, polices, caractères et couleurs randomisées
+imagettftext($image, 28, -10, 7, 50, random($colors), ABSPATH .'/'. random($fonts), $char1);
+imagettftext($image, 28, 0, 50, 50, random($colors), ABSPATH .'/'. 'polices/Eskiula.ttf', '+');
+imagettftext($image, 28, -35, 75, 50, random($colors), ABSPATH .'/'. random($fonts), $char2);
+imagettftext($image, 28, 0, 125, 50, random($colors), ABSPATH .'/'. 'polices/Eskiula.ttf', '=');
+
+header('Content-Type: image/png');
+imagepng($image);
+imagedestroy($image);
+?>