<?php
class capcha{
var $min;
var $max;
var $alphabet;
var $word;
var $num;
var $numletter;
function capcha(){
$this->min = 4;
$this->max = 6;
$this->alphabet = 'abcdefghijklmnopqrstuvwxyz';
$this->grain_de_sel = '6tIb90ZAS11';
$this->word = $this->createWord();
$this->num = $this->chooseNum();
$this->numletter = $this->num2letter();
}
function q(){
return 'Quelle est la '.$this->numletter.' lettre du mot '.$this->word.' ?';
}
function createWord(){
$len = rand($this->min,$this->max);
for($i=0;$i<$len;$i++){
$word[$i] = $this->alphabet[rand(0,strlen($this->alphabet)-1)];
}
return implode('',$word);
}
function chooseNum(){
return rand(1,strlen($this->word));
}
function num2letter(){
if($this->num == strlen($this->word)){
return 'dernière';
}
$array = array('1' => 'première','2' => 'deuxième','3' => 'troisième','4' => 'quatrième','5' => 'cinquième','6' => 'sizième','7' => 'septième','8' => 'huitième','9' => 'neuvième','10' => 'dixième');
if(isset($array[$this->num])){
return $array[$this->num];
}else{
return $this->num.'.ème';
}
}
function r(){
return md5($this->grain_de_sel.$this->word[$this->num-1]);
}
}
?>
session_start();
if ((!isset($_SESSION['rand_code'])) || ($_SESSION['rand_code']=='')) {
$str = "";
$length = 0;
for ($i = 0; $i < 4; $i++) {
// this numbers refer to numbers of the ascii table (small-caps)
$str .= chr(rand(97, 122));
}
$_SESSION['rand_code'] = $str;
}
$imgX = 100;
$imgY = 40;
$image = imagecreatetruecolor(100, 40);
$backgr_col = imagecolorallocate($image, 238,239,239);
$border_col = imagecolorallocate($image, 208,208,208);
$text_col = imagecolorallocate($image, 46,60,31);
$trait_col = imagecolorallocate($image, 46,60,31);
imagefilledrectangle($image, 0, 0, 100, 40, $backgr_col);
imagerectangle($image, 0, 0, 99, 39, $border_col);
imageline($image, 0, 0, 100, 40, $trait_col);
imageellipse($image, 50, 20, 75, 30, $trait_col);
$font = "ARIAL.TTF";
$font_size = 15;
$angle = 10;
$box = imagettfbbox($font_size, $angle, $font, $_SESSION['rand_code']);
$x = (int)($imgX - $box[4]) / 2;
$y = (int)($imgY - $box[5]) / 2;
imagettftext($image, $font_size, $angle, $x, $y, $text_col, $font, $_SESSION['rand_code']);
header("Content-type: image/png");
imagepng($image);
imagedestroy ($image);
Combien cela coûte-t-il au total ? Quelles aides apportent l'état et les acteurs du marché pour alléger cette charge non choisie ? Tous les détails sur Commentçamarche.net.