captcha

[chizijs]

<?php
session_start();
error_reporting(E_ALL);
?>
<form action="" method="post">
E-pasts: <input name='email' type='text'><br/>
<?php
$r1 = rand(0,9);
$string = $r1*10+rand(3,5)*3;
$_SESSION['captcha'] = $string;
$font_size = 5;
$width=imagefontwidth($font_size)*strlen($string);
$height=imagefontheight($font_size)*2;
$img = imagecreate($width,$height);
$bg = imagecolorallocate($img,255,255,255);
$black = imagecolorallocate($img,0,0,0);
$len=strlen($string);
for($i=0;$i<$len;$i++)
{
   $xpos=$i*imagefontwidth($font_size);
   $ypos=rand(0,imagefontheight($font_size));
   imagechar($img,$font_size,$xpos,$ypos,$string,$black);
   $string = substr($string,1);   
header("Content-Type: image/gif");
imagegif($img);
imagedestroy($img);
}
?>
<input name='db' type='text'><br/>
<input name='submit' type='submit' value='Nosūtīt'>
</form>

Bet errori parādās

Warning: Cannot modify header information - headers already sent by (output started at C:\webserv\xampp\htdocs\lockerz.php:7) in C:\webserv\xampp\htdocs\lockerz.php on line 37

GIF87a$€ÿÿÿ,$3„©Ëí£œ´Ú‹³Þ¼û†âH–æ¤Á˜-øºëu÷ª¢~‡ý6“ùf?Ž*xJ*?;

Warning: imagechar(): 2 is not a valid Image resource in C:\webserv\xampp\htdocs\lockerz.php on line 35

 

Warning: Cannot modify header information - headers already sent by (output started at C:\webserv\xampp\htdocs\lockerz.php:7) in C:\webserv\xampp\htdocs\lockerz.php on line 37

 

Warning: imagegif(): 2 is not a valid Image resource in C:\webserv\xampp\htdocs\lockerz.php on line 38

 

Warning: imagedestroy(): 2 is not a valid Image resource in C:\webserv\xampp\htdocs\lockerz.php on line 39

 

Warning: imagechar(): 2 is not a valid Image resource in C:\webserv\xampp\htdocs\lockerz.php on line 35

 

Warning: Cannot modify header information - headers already sent by (output started at C:\webserv\xampp\htdocs\lockerz.php:7) in C:\webserv\xampp\htdocs\lockerz.php on line 37

 

Warning: imagegif(): 2 is not a valid Image resource in C:\webserv\xampp\htdocs\lockerz.php on line 38

 

Warning: imagedestroy(): 2 is not a valid Image resource in C:\webserv\xampp\htdocs\lockerz.php on line 39

 

Warning: imagechar(): 2 is not a valid Image resource in C:\webserv\xampp\htdocs\lockerz.php on line 35

 

Warning: Cannot modify header information - headers already sent by (output started at C:\webserv\xampp\htdocs\lockerz.php:7) in C:\webserv\xampp\htdocs\lockerz.php on line 37

 

Warning: imagegif(): 2 is not a valid Image resource in C:\webserv\xampp\htdocs\lockerz.php on line 38

 

Warning: imagedestroy(): 2 is not a valid Image resource in C:\webserv\xampp\htdocs\lockerz.php on line 39

Edited March 13, 2010 by chizijs

[bobsters]

catcha kodu liec cita php faila un pievieno formai ar <img src=captcha.php>