Convert string to image in php (just support Persian numbers and Chars)

fagd.php

<?php
#Updated by Vahid Mahmoudian
#http://vhdm.ir

#http://persiangd.berlios.de
#Copyright (C) 2007  Milad Rastian (miladmovie[_at_]gmail)
#thanks to Bagram Siadat (info[_at_]gnudownload[_dot_]org) (bug fix and new developer)
#tahanks to Ramin Farmani (bug fix)
#
#This program is free software; you can redistribute it and/or
#modify it under the terms of the GNU General Public License
#as published by the Free Software Foundation; either version 2
#of the License, or (at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License
#along with this program; if not, write to the Free Software
#Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
function utf8_strlen($str) {
	return preg_match_all('/[\x00-\x7F\xC0-\xFD]/', $str, $dummy);
}
$p_chars = array (
'آ' => array ('ﺂ', 'ﺂ', 'آ'),
'ا' => array ('ﺎ', 'ﺎ', 'ا'),
'ب' => array ('ﺐ', 'ﺒ', 'ﺑ'),
'پ' => array ('ﭗ', 'ﭙ', 'ﭘ'),
'ت' => array ('ﺖ', 'ﺘ', 'ﺗ'),
'ث' => array ('ﺚ', 'ﺜ', 'ﺛ'),
'ج' => array ('ﺞ', 'ﺠ', 'ﺟ'),
'چ' => array ('ﭻ', 'ﭽ', 'ﭼ'),
'ح' => array ('ﺢ', 'ﺤ', 'ﺣ'),
'خ' => array ('ﺦ', 'ﺨ', 'ﺧ'),
'د' => array ('ﺪ', 'ﺪ', 'ﺩ'),
'ذ' => array ('ﺬ', 'ﺬ', 'ﺫ'),
'ر' => array ('ﺮ', 'ﺮ', 'ﺭ'),
'ز' => array ('ﺰ', 'ﺰ', 'ﺯ'),
'ژ' => array ('ﮋ', 'ﮋ', 'ﮊ'),
'س' => array ('ﺲ', 'ﺴ', 'ﺳ'),
'ش' => array ('ﺶ', 'ﺸ', 'ﺷ'),
'ص' => array ('ﺺ', 'ﺼ', 'ﺻ'),
'ض' => array ('ﺾ', 'ﻀ', 'ﺿ'),
'ط' => array ('ﻂ', 'ﻄ', 'ﻃ'),
'ظ' => array ('ﻆ', 'ﻈ', 'ﻇ'),
'ع' => array ('ﻊ', 'ﻌ', 'ﻋ'),
'غ' => array ('ﻎ', 'ﻐ', 'ﻏ'),
'ف' => array ('ﻒ', 'ﻔ', 'ﻓ'),
'ق' => array ('ﻖ', 'ﻘ', 'ﻗ'),
'ک' => array ('ﻚ', 'ﻜ', 'ﻛ'),
'گ' => array ('ﮓ', 'ﮕ', 'ﮔ'),
'ل' => array ('ﻞ', 'ﻠ', 'ﻟ'),
'م' => array ('ﻢ', 'ﻤ', 'ﻣ'),
'ن' => array ('ﻦ', 'ﻨ', 'ﻧ'),
'و' => array ('ﻮ', 'ﻮ', 'ﻭ'),
'ی' => array ('ﯽ', 'ﯿ', 'ﯾ'),
'ك' => array ('ﻚ', 'ﻜ', 'ﻛ'),
'ي' => array ('ﻲ', 'ﻴ', 'ﻳ'),
'أ' => array ('ﺄ', 'ﺄ', 'ﺃ'),
'ؤ' => array ('ﺆ', 'ﺆ', 'ﺅ'),
'إ' => array ('ﺈ', 'ﺈ', 'ﺇ'),
'ئ' => array ('ﺊ', 'ﺌ', 'ﺋ'),
'ة' => array ('ﺔ', 'ﺘ', 'ﺗ')
);
$nastaligh = array(
'ه' => array ('ﮫ', 'ﮭ', 'ﮬ')
);
$normal    = array(
'ه' => array ('ﻪ', 'ﻬ', 'ﻫ')
);
$mp_chars = array ('آ', 'ا', 'د', 'ذ', 'ر', 'ز', 'ژ', 'و', 'أ', 'إ', 'ؤ');
$ignorelist = array('','ٌ','ٍ','ً','ُ','ِ','َ','ّ','ٓ','ٰ','ٔ','ﹶ','ﹺ','ﹸ','ﹼ','ﹾ','ﹴ','ﹰ','ﱞ','ﱟ','ﱠ','ﱡ','ﱢ','ﱣ',);
///
function fagd($str,$z="",$method='normal'){
	global $p_chars,$mp_chars, $ignorelist,$nastaligh,$normal;
	if($method == 'nastaligh'){
		$p_chars = array_merge($p_chars,$nastaligh);
	}elsE{
		$p_chars = array_merge($p_chars,$normal);
	}
	$str_len=utf8_strlen($str);
	preg_match_all("/./u", $str, $ar);
	for ($i=0; $i<$str_len; $i++){
		$str1=$ar[0][$i];
		if(in_array($ar[0][$i+1],$ignorelist)){
			$str_next=$ar[0][$i+2];
			if ($i == 2) $str_back=$ar[0][$i-2];
			if ($i != 2) $str_back=$ar[0][$i-1];
		}elseif(!in_array($ar[0][$i-1],$ignorelist)){
			$str_next=$ar[0][$i+1];
			if ($i != 0) $str_back=$ar[0][$i-1];
		}else{
			if(isset($ar[0][$i+1]) && !empty($ar[0][$i+1])){
				$str_next=$ar[0][$i+1];
			}else{
				$str_next=$ar[0][$i-1];
			}
			if ($i != 0) $str_back=$ar[0][$i-2];
		}
		if(!in_array($str1,$ignorelist)){
			if (array_key_exists($str1,$p_chars)){
				if(!$str_back or $str_back==" " or !array_key_exists($str_back,$p_chars)){
					if(!array_key_exists($str_back,$p_chars) and !array_key_exists($str_next,$p_chars)) $output=$str1.$output;
					else $output=$p_chars[$str1][2].$output;
					continue;
				}elseif (array_key_exists($str_next,$p_chars) and array_key_exists($str_back,$p_chars)){
					if(in_array($str_back,$mp_chars) and array_key_exists($str_next,$p_chars)){
						$output=$p_chars[$str1][2].$output;
					}else{
						$output=$p_chars[$str1][1].$output;
					}
					continue;
				}elseif(array_key_exists($str_back,$p_chars) and !array_key_exists($str_next,$p_chars)){
					if(in_array($str_back,$mp_chars)){
						$output=$str1.$output;
					}else{
						$output=$p_chars[$str1][0].$output;
					}
					continue;
				}
			}elseif($z=="fa"){
				$number =array("٠","١","٢","٣","٤","٥","٦","٧","٨","٩","۴","۵","۶","0","1","2","3","4","5","6","7","8","9");
				switch ($str1){
				case ")" : $str1="("; break;
				case "(" : $str1=")"; break;
				case "}" : $str1="{"; break;
				case "{" : $str1="}"; break;
				case "]" : $str1="["; break;
				case "[" : $str1="]"; break;
				case ">" : $str1="<"; break;
				case "<" : $str1=">"; break;
				}
				if(in_array($str1,$number)){
					$num.=$str1;
					$str1="";
				}
				if (!in_array($str_next,$number)){
					$str1.=$num;
					$num="";
				}
				$output=$str1.$output;
			}else{
				if(($str1=="،") or ($str1=="؟") or ($str1=="ء") or (array_key_exists($str_next,$p_chars) and array_key_exists($str_back,$p_chars)) or
						($str1==" " and array_key_exists($str_back,$p_chars)) or ($str1==" " and array_key_exists($str_next,$p_chars)))
				{
					if($e_output){
						$output=$e_output.$output;
						$e_output="";
					}
					$output=$str1.$output;
				}
				else{
					$e_output.=$str1;
					if(array_key_exists($str_next,$p_chars) or $str_next==""){
						$output=$e_output.$output;
						$e_output="";
					}
				}
			}
		}else{
			$output=$str1.$output;
		}
		$str_next = null;
		$str_back = null;
	}
	return  $output;
}
?>

index.php

<?php
echo "<img src='text_to_img.php?rev=true&text=سلام، این یک تست است' ><br />";
echo "<img src='text_to_img.php?rev=true&text=شماره موبایل: 09379217534' ><br />";
?>

text_to_img.php

<?php
ini_set("error_reporting","E_ALL & ~E_NOTICE & ~E_STRICT");
header("Content-type: image/png");
include("fagd.php");
if(!$_GET['text']){
	$string="";
} else {
	$string=strlen(trim($_GET['text']))==0?"0":$_GET['text'];
	if(isset($_GET["rev"]) and $_GET["rev"]=true)
	{
		$string=farsidigit($string);
	}
	else
	{
		
		$string=$string;
	}
}
$text = fagd($string,'fa','normal');
$font = 'IranianSansRegular.ttf';
$font_size        = 14;
$text_angle        = 0;
$text_padding    = 4;
$the_box        = calculateTextBox($text, $font, $font_size, $text_angle); 
$imgWidth    = $the_box["width"] + $text_padding;
$imgHeight    = $the_box["height"] + $text_padding; 
$im = imagecreate($imgWidth,$imgHeight);
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
$blue=imagecolorallocate($im, 0, 77, 64);
imagettftext($im, $font_size, $text_angle, $the_box["left"] + ($imgWidth / 2) - ($the_box["width"] / 2),
$the_box["top"] + ($imgHeight / 2) - ($the_box["height"] / 2), $blue, $font, $text);
imagepng($im);
imagedestroy($im);
function convert_number($string,$revers=false) 
{
	if($revers)
	{
		$newstring=str_replace(array('۰','۱','۲','۳','۴','۵','۶','۷','۸','۹'), 
		array('0','1','2','3','4','5','6','7','8','9'), $string);
	}
	else
	{
		$newstring=str_replace(array('0','1','2','3','4','5','6','7','8','9'), 
		array('۰','۱','۲','۳','۴','۵','۶','۷','۸','۹'), $string);
		
	}
	return $newstring;
}
function farsidigit($text){
	$text = str_replace('0' , '٠' , $text);
	$text = str_replace('1' , '١' , $text);
	$text = str_replace('2' , '٢' , $text);
	$text = str_replace('3' , '٣' , $text);
	$text = str_replace('4' , '۴' , $text);
	$text = str_replace('5' , '۵' , $text);
	$text = str_replace('6' , '۶' , $text);
	$text = str_replace('7' , '٧' , $text);
	$text = str_replace('8' , '٨' , $text);
	$text = str_replace('9' , '٩' , $text);

	return $text;
} 
function calculateTextBox($text,$fontFile,$fontSize,$fontAngle) {
	$rect = imagettfbbox($fontSize,$fontAngle,$fontFile,$text);
	$minX = min(array($rect[0],$rect[2],$rect[4],$rect[6]));
	$maxX = max(array($rect[0],$rect[2],$rect[4],$rect[6]));
	$minY = min(array($rect[1],$rect[3],$rect[5],$rect[7]));
	$maxY = max(array($rect[1],$rect[3],$rect[5],$rect[7]));

	return array(
	"left"   => abs($minX) - 1,
	"top"    => abs($minY) - 1,
	"width"  => $maxX - $minX,
	"height" => $maxY - $minY,
	"box"    => $rect
	);
}
?>

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