<?php

	$count = strlen($_GET['tex']);
	$image = imagecreate($count*9, 18) or die("Impossible d'initialiser la bibliothèque GD");
	$blanc = function_exists('imagecolorallocatealpha') ? imagecolorallocatealpha($image, 255, 255, 255, 127) : imagecolorallocate($image, 255, 255, 255);
	$noir = imagecolorallocate($image, 0, 0, 0);
	
	imagestring($image, 5, 1, 1, htmlspecialchars($_GET['tex'], ENT_QUOTES), $noir);
	
	header('Content-type: image/png');
	
	imagepng($image);
	imagedestroy($image);

?>

imagettftext($image, $taille, $angle, $ecart*$i+15, $y, $aupifcolor, 'fonts/le_nom_de_la_police.ttf', $lettre);

<?php
/*
Neoterranos & LkY
Page captcha.php
 
Génère un captcha.
 
Quelques indications : (utiliser l'outil de recherche et rechercher les mentions données)
 
Liste des fonctions :
--------------------------
Aucune fonction
--------------------------
 
 
Liste des informations/erreurs :
--------------------------
Aucune information/erreur
--------------------------
*/
 
session_start();
header ("Content-type: image/png");
$image = imagecreate(320, 100);
 
$blanc = imagecolorallocate($image, 255, 255, 255);
$noir = imagecolorallocate($image, 0, 0, 0);
$gris = imagecolorallocate($image, 200,200,200);
$jaune = imagecolorallocate($image, 255, 255, 0);
$rouge = imagecolorallocate($image, 200, 39, 45);
$vert = imagecolorallocate($image, 45, 255, 39);
$cyan = imagecolorallocate($image, 0, 255, 255);
$magenta = imagecolorallocate($image, 200, 0, 200);
$orange = imagecolorallocate($image, 255, 160, 0);
$bleu = imagecolorallocate($image, 60, 75, 200);
$bleuclair = imagecolorallocate($image, 156, 227, 254);
$vertf = imagecolorallocate($image, 20, 140, 17);
 
/*$Anoir = imagecolorallocatealpha($image, 0, 0, 0, 80);
$Ajaune = imagecolorallocatealpha($image, 255, 255, 0, 80);
$Ablanc = imagecolorallocatealpha($image, 255, 255, 255, 80);
$Arouge = imagecolorallocatealpha($image, 200, 39, 45, 80);
$Avert = imagecolorallocatealpha($image, 45, 200, 39, 80);
$Acyan = imagecolorallocatealpha($image, 0, 255, 255, 80);
$Amagenta = imagecolorallocatealpha($image, 255, 0, 255, 80);
$Aorange = imagecolorallocatealpha($image, 255, 128, 0, 80);
$Ableu = imagecolorallocatealpha($image, 39, 45, 200, 80);
$Ableuclair = imagecolorallocatealpha($image, 156, 227, 254, 80);
 
$A2noir = imagecolorallocatealpha($image, 0, 0, 0, 25);
$A2jaune = imagecolorallocatealpha($image, 255, 255, 0, 25);
$A2blanc = imagecolorallocatealpha($image, 255, 255, 255, 25);
$A2rouge = imagecolorallocatealpha($image, 200, 39, 45, 25);
$A2vert = imagecolorallocatealpha($image, 45, 200, 39, 25);
$A2cyan = imagecolorallocatealpha($image, 0, 255, 255, 25);
$A2magenta = imagecolorallocatealpha($image, 255, 0, 255, 25);
$A2orange = imagecolorallocatealpha($image, 255, 128, 0, 25);
$A2bleu = imagecolorallocatealpha($image, 39, 45, 200, 25);
$A2bleuclair = imagecolorallocatealpha($image, 156, 227, 254, 25);*/
 
//Toutes les couleurs
$colors = array($vert, $noir, $jaune, $blanc, $rouge, $cyan, $magenta, $orange, $bleu, $bleuclair, $gris, $vertf);
$Tcolors = count($colors);
 
/*$colors2 = Array($Avert, $Anoir, $Ajaune, $Ablanc, $Arouge, $Acyan, $Amagenta, $Aorange, $Ableu, $Ableuclair);
$Tcolors2 = count($colors2);
$colors3 = Array($A2vert, $A2noir, $A2jaune, $A2blanc, $A2rouge, $A2cyan, $A2magenta, $A2orange, $A2bleu, $A2bleuclair);
$Tcolors3 = count($colors3);*/
 
//couleurs autorisées pour les caractères
$Lcolors = array($noir, $rouge, $magenta, $bleu, $vertf);
$TLcolors = count($Lcolors);
 
$polices = Array('baveuse3d'); //Pensez à en rajouter !!
$Tpolices = count($polices);
 
//définition des caractères autorisés.
$carac = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$Tcarac = strlen($carac);
 
//définition des lignes noires
$nb_lignes = mt_rand(3,7);
$i = 1;
while($i<=$nb_lignes)
{
        imageline($image, mt_rand(0,40), mt_rand(0,100), mt_rand(280, 320), mt_rand(0,100), $noir);
        $i++;
}
 
//définition des lignes colorées.
$nb_lignes = mt_rand(3,7);
$i = 1;
while($i<=$nb_lignes)
{
        imageline($image, mt_rand(0,40), mt_rand(0,100), mt_rand(280,320), mt_rand(0,100), $colors[mt_rand(0,$Tcolors-1)]);
        $i++;
}
 
//définition des ellipses
$nb_ellipses = mt_rand(1,6);
$i = 1;
while($i<= $nb_ellipses) {
        imageellipse($image, mt_rand(0,320), mt_rand(0,100), 25+mt_rand(0,15), 25+mt_rand(0,15), $colors[mt_rand(0,$Tcolors-1)]);
        $i++;
}
 
//définition des triangles
$nb_triangles = mt_rand(1,6);
$i = 1;
while($i<=$nb_triangles) {
        $array = array(mt_rand(0,300), mt_rand(0,100), mt_rand(0,300), mt_rand(0,100), mt_rand(0,300), mt_rand(0,100));
        imagepolygon($image, $array, 3, $colors[mt_rand(0,$Tcolors-1)]);
        $i++;
}
 
 
$aupifcolor = $Lcolors[mt_rand(0,$TLcolors-1)]; //la couleur des caractères
$ecart = 300/10+4; //écart entre les caractères
 
$_SESSION['captcha'] = ''; //La voilà !! Enfin !!
 
$i = 0;
while($i <= 7) {
	
        $lettre = $carac[mt_rand(0, $Tcarac-1)]; //choix de lettre
        $_SESSION['captcha'] .= $lettre; //stockage
        $taille = mt_rand(35,45); //taille
        $angle = mt_rand(-35,35); //angle
        $y = mt_rand(55, 60); //ordonnée
        $police = $polices[mt_rand(0, $Tpolices-1)];
		         
        imagettftext($image, $taille, $angle, $ecart*$i+15, $y, $aupifcolor, 'rencontre/include/fonts/Standard0753.ttf', $lettre);
        $i++;
}
 
imagepng($image); //On envoie et on prie <img src="../../bundles/tinymce/vendor/tiny_mce/plugins/emotions/img/langue.png" title=":p" alt=":p">
?>