navid3d_69
پنج شنبه 08 فروردین 1392, 23:56 عصر
سلام من در کپتچا مشکل دارم با این کد یک کپتچا درست کردم ولی مقداری که توی فرم به من نمایش میده با مقداری که توی session هست متفاوت هست مشکل از کجا می تونه باشه؟
<?php
session_start ();
// $randnum = rand(1000,9999);
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
$num1 = rand ( 0, 9 );
$num2 = rand ( 0, 9 );
$num3 = rand ( 0, 9 );
$num4 = rand ( 0, 9 );
function generateRandomString($length = 10) {
$characters = '012345678901234567890123456789abcdefghijklmnopqrs tuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, strlen($characters) - 1)];
}
return $randomString;
}
$allnum = generateRandomString(1);
$allnum .= $num2;
$allnum .= generateRandomString(1);
$allnum .= $num4;
$_SESSION ['Ccode'] = $allnum;
$img = imagecreatetruecolor ( 100, 40 );
$black = imagecolorallocate ( $img, 0, 0, 0 );
$gray = imagecolorallocate ( $img, 128, 128, 128 );
$white = imagecolorallocate ( $img, 255, 255, 255 );
imagefilledrectangle ( $img, 0, 0, 150, 60, $black );
$arial = 'Fonts/ARIAL.TTF';
$verdana = 'Fonts/VERDANA.TTF';
imagettftext ( $img, 20, rand ( - 10, 10 ), 10, 28, rand ( $gray, $white ), $verdana, generateRandomString(1) );
imagettftext ( $img, 20, rand ( - 10, 10 ), 30, 28, rand ( $gray, $white ), $verdana, $num2 );
imagettftext ( $img, 20, rand ( - 10, 10 ), 50, 28, rand ( $gray, $white ), $verdana, generateRandomString(1) );
imagettftext ( $img, 20, rand ( - 10, 10 ), 70, 28, rand ( $gray, $white ), $verdana, $num4 );
header ( 'content-type: image/png' );
imagepng ( $img );
imagedestroy ( $img );
?>
<?php
session_start ();
// $randnum = rand(1000,9999);
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
$num1 = rand ( 0, 9 );
$num2 = rand ( 0, 9 );
$num3 = rand ( 0, 9 );
$num4 = rand ( 0, 9 );
function generateRandomString($length = 10) {
$characters = '012345678901234567890123456789abcdefghijklmnopqrs tuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, strlen($characters) - 1)];
}
return $randomString;
}
$allnum = generateRandomString(1);
$allnum .= $num2;
$allnum .= generateRandomString(1);
$allnum .= $num4;
$_SESSION ['Ccode'] = $allnum;
$img = imagecreatetruecolor ( 100, 40 );
$black = imagecolorallocate ( $img, 0, 0, 0 );
$gray = imagecolorallocate ( $img, 128, 128, 128 );
$white = imagecolorallocate ( $img, 255, 255, 255 );
imagefilledrectangle ( $img, 0, 0, 150, 60, $black );
$arial = 'Fonts/ARIAL.TTF';
$verdana = 'Fonts/VERDANA.TTF';
imagettftext ( $img, 20, rand ( - 10, 10 ), 10, 28, rand ( $gray, $white ), $verdana, generateRandomString(1) );
imagettftext ( $img, 20, rand ( - 10, 10 ), 30, 28, rand ( $gray, $white ), $verdana, $num2 );
imagettftext ( $img, 20, rand ( - 10, 10 ), 50, 28, rand ( $gray, $white ), $verdana, generateRandomString(1) );
imagettftext ( $img, 20, rand ( - 10, 10 ), 70, 28, rand ( $gray, $white ), $verdana, $num4 );
header ( 'content-type: image/png' );
imagepng ( $img );
imagedestroy ( $img );
?>