[كلاس] Captcha

[romaissa]

http://www.dzbatna.com/images/icons/iconrote.gif [ظƒظ„ط§ط³] Captcha (http://www.dzbatna.com/t731075/)



بسم الله الرحمن الرحيم

ايه الاخبار ؟؟

انا كل ما بخلص ملف من الFrameWork بعرضه هنا
اكيد هاستفيد من ملاحظاتكم و يا ريت اشوف ملاحظات كتير الكلاس ده بقي للcaptcha و فيه بحتاج للفونت اللي اسمه Vera اي حد يقدر ينزله من اي موقع للخطوط
و بس
رمز PHP:

<code style="white-space:nowrap"> <code>
<?php

/*
* @author: Ahmed H AboElnasser <[email protected] (http://www.cloudflare.com/email-protection)>
* @license MIT
* @since: Class available since EgySolutions Framework 0.1 Beta
* @link: http://www.egysolutions.net
* Requires: PHP 5.1.4+
* @package: EgySolutions Framework
* @category: core
* @subpackage: captcha
*/

class captcha
{
/**
* @var integer
* @todo comment variables and rest of file
*/
public $str_length = 4;

// image settings
public $img_height = 40;
public $img_width = 140;
// font settings
public $font = '/fonts/Vera.ttf';

/**
* CONSTRUCTOR
*/

function __construct()
{
$this->generate_Image();
}

/**
* Get GD Version
*/

function gd_version()
{
static $gd_version_number = null;

if ($gd_version_number === null)
{
ob_start();
phpinfo(8);
$module_info = ob_get_contents();
ob_end_clean();
if (preg_match("/\bgd\s+version\b&#91;^\d\n\r&#93;+?(&#91;\d\.&#93;+)/i",
$module_info,$matches))
{
$gd_version_number = $matches&#91;1&#93;;
}
else
{
$gd_version_number = 0;
}
}
return $gd_version_number;
}

/**
* Get a random captcha string by size (@link $strlength)
*/

function randomString($str_length)
{
/**
* Exclusion of characters
* Excluded-Chars: 0, 1, 7, I, O
*/

$excludeChars = array(48, 49, 55, 73, 79);

$captcha_str = '';
while (strlen($captcha_str) < $str_length)
{
$random=rand(48,122);
if (!in_array($random, $excludeChars) &&
( ($random >= 50 && $random <= 57) // ASCII 48->57: numbers 0-9
| ($random >= 65 && $random <= 90)) // ASCII 65->90: A-Z
| ($random >= 97 && $random <= 122) // ASCII 97->122: a-z
)
{
$captcha_str.=chr($random);
}
}
return $captcha_str;
}


/**
* Generate the image
*/

function generate_image()
{
// random captcha string
$str_length = rand(3,5);
$captcha_str = $this->randomString($str_length);

// set string to session
$_SESSION&#91;'captcha_string'&#93; = $captcha_str;

// send headers

header('Expires: Str, 23 Feb 2014 05:00:00 GMT');
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Cache-Control: post-check=0, pre-check=0', false);
header('Pragma: no-cache');
header('Content-Type: image/jpeg');
header('Cute-Captcha: by Ahmed H AboElnasser');

//initialize image $captcha with dimensions from $img_width, $img_heigth
if ($this->gd_version() >= 2)
{
$captcha = @imagecreatetruecolor($this->img_width, $this->img_height)
or die("Cannot Initialize new GD image stream");
}
else
{
$captcha = ImageCreate($this->img_width, $this->img_height)
or die("Cannot Initialize new GD image stream");
}

// create textcolor from random RGB colors
$text_color = imageColorAllocate($captcha, rand(50,240), rand(50,240), rand(0,255));


// switch between captcha types
switch ($captchatype_randomizer = rand(1,2))
{
case 1:
// create backgroundcolor from random RGB colors
$background_color = imagecolorallocate($captcha, rand(100, 255), rand(100, 255), rand(0, 255));

/**
* Background Fill Effects
*/
switch ($background_randomizer = rand(1,2))
{
case 1:
// Solid
imagefill($captcha, 0, 0, $background_color );
break;
case 2:
// Gradient
for ($i = 0, $rd = rand(0, 100), $gr = rand(0, 100), $bl= rand(0, 100); $i <= $this->img_height; $i++)
{
$g = @imagecolorallocate($captcha, $rd+=2, $gr+=2, $bl+=2);
@imageline($captcha, 0, $i, $this->img_width, $i, $g);
}
break;
}

// add noise
for ($i=1; $i<=4; $i++)
{
imageellipse($captcha,rand(1,200),rand(1,50),rand( 50,100),rand(12,25),$text_color);
}
for ($i=1; $i<=4; $i++)
{
imageellipse($captcha,rand(1,200),rand(1,50),rand( 50,100),rand(12,25),$background_color);
}


// loop through $captcha_str and apply random font-effect to every char
for ($i=0; $i<=$str_length; $i++)
{
/**
* Font Rotation Effect
*/
switch ($rotation_randomizer = rand(1,2))
{
case 1:
$rotangle = rand(0,15);
break;



// Clock-Rotation
case 2:
$rotangle = rand(345,360);
break;
// Counter-Rotation
}

// string ausgeben !
// imagettftext( resource image, float size, float angle, int x, int y, int color, string fontfile, string text )
// $i*25 = spaces the characters 25 pixels apart
// todo : substr durch $char = ersetzen
imagettftext($captcha,$fontsize = rand(16,32),$rotangle,15+($i*25),30,$text_color+($ i*12),$this->font,$captcha_str&#91;$i&#93;);
}
// interlacen
#$this->interlace($captcha);

// rotation
#if(function_exists('imagerotate')) {
#$im2 = imagerotate($captcha,rand(-20,30),$background_color);
# imagedestroy($captcha);
# $captcha = $im2;
# }
break;

case '2':
// wenig stuff @ image
// background white
$white = ImageColorAllocate($captcha, 255, 255, 255);
imagefill($captcha, 1, 1, $white );

// loop through $captcha_str and apply random font-effect to every char
for ($i=0; $i<=$str_length; $i++)
{
imagettftext($captcha,rand(28,35),rand(-5,5),25+($i*17),38,$text_color,$this->font,$captcha_str&#91;$i&#93;);
}
break;
}

/**
* Final: Render Image! & Free Memory.
*/

ImagePNG($captcha);
imageDestroy($captcha);
}

/**
* Interlaces a Image ( every 2th line is blacked )
*/

function interlace(&$image)
{
$imagex = imagesx($image);
$imagey = imagesy($image);
$black = imagecolorallocate($image, 255, 255, 255);
for ($y = 0; $y < $imagey; $y += 2)
{
imageline($image, 0, $y, $imagex, $y, $black);
}
}
}

/**
*
* @todo: init class at the end! find a better way?
*/
$captcha = new captcha;

?> </code> </code>






التعديل الأخير كان بواسطة dado; 23 - 02 - 2014 الساعة 15:31

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