View file v4 2/include/gum_tmp/gumtcha.php

<?php 
require_once('../functions_general.php');
#if(is_bot($_SERVER['HTTP_USER_AGENT'])||empty($_SERVER['HTTP_USER_AGENT']))exit();

if(rand(1, 100)>98)
{
 if(current_load($num=1)<10)@exec("find ./captcha/ -maxdepth 1 -type f -mtime +1 -exec rm -f {} \;"); 
}

$code = rand_string(6); 
file_put_contents('./captcha/'.$code, $code); 


/* YOU CAN MODIFY THE IMAGE CODE FROM HERE TO CREATE MORE COOL CAPTCHA IMAGES, eg. with different backgrounds */ 
header("Content-type: image/gif"); 
$im = @imagecreate(50, 18) 
    or die("Cannot Initialize new GD image stream"); 
$background_color = imagecolorallocate($im, 255, 255, 255); 


$info_color = imagecolorallocate($im, 0, 0, 0);
imagettftext($im, 7, 0, 1, 6, $info_color, './gumtcha_fonts/pzim3x5.ttf', "code below");

$hex = 'ff8822';
$color['r'] = hexdec(substr($hex, 0, 2));
$color['g'] = hexdec(substr($hex, 2, 2));
$color['b'] = hexdec(substr($hex, 4, 2));
$text_color = imagecolorallocate($im, $color['r'], $color['g'], $color['b']); 
$font = './gumtcha_fonts/hachicro.TTF';
#imagettftext($im, 6, 0, 1, 17, $text_color, $font, strtoupper($code));
imagestring($im, 3, 5, 5,  $code, $text_color); 


imagegif($im); 
imagedestroy($im); 

?>