php عربي

<?php
ini_set('default_charset', 'utf-8');
header('Content-type: text/html; charset=UTF-8');
session_start();
//You can customize your captcha settings here


$captcha_code = '';
$captcha_image_height = 50;
$captcha_image_width = 130;
$total_characters_on_image = 5;


//The characters that can be used in the CAPTCHA code.
//avoid all confusing characters and numbers (For example: l, 1 and i)


$possible_captcha_letters = ' ب ت ث ج ح خ د ذ ر ز س ش ص ض ع غ ف ق ك ل م ن و ه ي';
$captcha_font = 'Calibri.ttf';


$random_captcha_dots = 50;
$random_captcha_lines = 25;
$captcha_text_color = "0x142864";
$captcha_noise_color = "0x142864";
$count = 0;
while ($count < $total_characters_on_image) { 
$captcha_code .= substr(
    $possible_captcha_letters,
    mt_rand(0, strlen($possible_captcha_letters)-1),1);
$count++;
}


$captcha_font_size = $captcha_image_height * 0.65;
$captcha_image = @imagecreate(
    $captcha_image_width,
    $captcha_image_height
    );


/* setting the background, text and noise colours here */
$background_color = imagecolorallocate(
    $captcha_image,
    255,
    255,
    255
    );


$array_text_color = hextorgb($captcha_text_color);
$captcha_text_color = imagecolorallocate(
    $captcha_image,
    $array_text_color['red'],
    $array_text_color['green'],
    $array_text_color['blue']
    );


$array_noise_color = hextorgb($captcha_noise_color);
$image_noise_color = imagecolorallocate(
    $captcha_image,
    $array_noise_color['red'],
    $array_noise_color['green'],
    $array_noise_color['blue']
    );


/* Generate random dots in background of the captcha image */
for( $count=0; $count<$random_captcha_dots; $count++ ) {
imagefilledellipse(
    $captcha_image,
    mt_rand(0,$captcha_image_width),
    mt_rand(0,$captcha_image_height),
    2,
    3,
    $image_noise_color
    );
}


/* Generate random lines in background of the captcha image */
for( $count=0; $count<$random_captcha_lines; $count++ ) {
imageline(
    $captcha_image,
    mt_rand(0,$captcha_image_width),
    mt_rand(0,$captcha_image_height),
    mt_rand(0,$captcha_image_width),
    mt_rand(0,$captcha_image_height),
    $image_noise_color
    );
}


/* Create a text box and add 6 captcha letters code in it */
$text_box = imagettfbbox(
    $captcha_font_size,
    0,
    $captcha_font,
    $captcha_code
    ); 
$x = ($captcha_image_width - $text_box[4])/2;
$y = ($captcha_image_height - $text_box[5])/2;
imagettftext(
    $captcha_image,
    $captcha_font_size,
    0,
    $x,
    $y,
    $captcha_text_color,
    $captcha_font,
    $captcha_code
    );


/* Show captcha image in the html page */
// defining the image type to be shown in browser widow
header('Content-Type: image/jpeg'); 
imagejpeg($captcha_image); //showing the image
imagedestroy($captcha_image); //destroying the image instance
$_SESSION['captcha'] = $captcha_code;


function hextorgb ($hexstring){
  $integar = hexdec($hexstring);
  return array("red" => 0xFF & ($integar >> 0x10),
               "green" => 0xFF & ($integar >> 0x8),
               "blue" => 0xFF & $integar);
               }
?>