View file sys/inc/captcha.php

<?php

class captcha
{
    var $str;
    var $x = 100;
    var $y = 40;
    var $img;
    var $gif = false;
    var $png = false;
    var $jpg = false;

    function __construct( $str )
    {
        if ( !function_exists( 'gd_info' ) ) {
            header( 'Location: /style/errors/gd_err.gif' );
            exit;
        }
        if ( imagetypes() & IMG_PNG )
            $this->png = true;
        if ( imagetypes() & IMG_GIF )
            $this->gif = true;
        if ( imagetypes() & IMG_JPG )
            $this->jpg = true;
        $this->str = $str;
        $this->img = imagecreatetruecolor( $this->x, $this->y );
        imagefill( $this->img, 0, 0, imagecolorallocate( $this->img, 255, 255, 255 ) );
    }

    function create( )
    {
        for ( $i = 0; $i < 5; $i++ ) {
            $n = $this->str{$i};
            if ( $this->png )
                $num[$n] = imagecreatefrompng( H . '/style/captcha/' . $n . '.png' );
            elseif ( $this->gif )
                $num[$n] = imagecreatefromgif( H . '/style/captcha/' . $n . '.gif' );
            elseif ( $this->jpg )
                $num[$n] = imagecreatefromjpeg( H . '/style/captcha/' . $n . '.jpg' );
            imagecopy( $this->img, $num[$n], $i * 15 + 10, 8, 0, 0, 15, 20 );
        }
    }

    function MultiWave( )
    {
        include_once H . 'sys/inc/MultiWave.php';
        $this->img = MultiWave( $this->img );
    }

    function colorize( $value = 90 )
    {
        if ( function_exists( 'imagefilter' ) )
            imagefilter( $this->img, IMG_FILTER_COLORIZE, mt_rand( 0, $value ), mt_rand( 0, $value ), mt_rand( 0, $value ) );
    }

    function output( $q = 50 )
    {
        @ob_end_clean();
        if ( $this->jpg ) {
            header( "Content-type: image/jpeg" );
            imagejpeg( $this->img, null, $q );
        } elseif ( $this->png ) {
            header( "Content-type: image/png" );
            imagepng( $this->img );
        } elseif ( $this->gif ) {
            header( "Content-type: image/gif" );
            imagegif( $this->img );
        }
        exit;
    }
}