[PHP]Writing text on Animated GIF PHP

[PHP]Class_decoupage_Panda.php

Class PANDA_decode {
	var $PANDA_TR = - 1;
	var $PANDA_TG = - 1;
	var $PANDA_TB = - 1;
	var $PANDA_TI = 0;
	var $PANDA_buffer = Array();
	var $PANDA_arrays = Array();
	var $PANDA_delays = Array();
	var $PANDA_dispos = Array();
	var $PANDA_stream = "";
	var $PANDA_string = "";
	var $PANDA_bfseek = 0;
	var $PANDA_anloop = 0;
	var $PANDA_screen = Array();
	var $PANDA_global = Array();
	var $PANDA_sorted;
	var $PANDA_colorS;
	var $PANDA_colorC;
	var $PANDA_colorF;

	function __construct($PANDA_pointer)
		{
		$this->PANDA_stream = $PANDA_pointer;
		PANDA_decode::PANDA_get(6);
		PANDA_decode::PANDA_get(7);
		$this->PANDA_screen = $this->PANDA_buffer;
		$this->PANDA_colorF = $this->PANDA_buffer[4] & 0x80 ? 1 : 0;
		$this->PANDA_sorted = $this->PANDA_buffer[4] & 0x08 ? 1 : 0;
		$this->PANDA_colorC = $this->PANDA_buffer[4] & 0x07;
		$this->PANDA_colorS = 2 << $this->PANDA_colorC;
		if ($this->PANDA_colorF == 1)
			{
			PANDA_decode::PANDA_get(3 * $this->PANDA_colorS);
			$this->PANDA_global = $this->PANDA_buffer;
			}

		for ($cycle = 1; $cycle;)
			{
			if (PANDA_decode::PANDA_get(1))
				{
				switch ($this->PANDA_buffer[0])
					{
				case 0x21:
					PANDA_decode::PANDAReadX();
					break;

				case 0x2C:
					PANDA_decode::PANDA_Y();
					break;

				case 0x3B:
					$cycle = 0;
					break;
					}
				}
			  else
				{
				$cycle = 0;
				}
			}
		}

	function PANDAReadX()
		{
		PANDA_decode::PANDA_get(1);
		if ($this->PANDA_buffer[0] == 0xff)
			{
			for (;;)
				{
				PANDA_decode::PANDA_get(1);
				if (($u = $this->PANDA_buffer[0]) == 0x00)
					{
					break;
					}

				PANDA_decode::PANDA_get($u);
				if ($u == 0x03)
					{
					$this->PANDA_anloop = ($this->PANDA_buffer[1] | $this->PANDA_buffer[2] << 8);
					}
				}
			}
		  else
			{
			for (;;)
				{
				PANDA_decode::PANDA_get(1);
				if (($u = $this->PANDA_buffer[0]) == 0x00)
					{
					break;
					}

				PANDA_decode::PANDA_get($u);
				if ($u == 0x04)
					{
					if ($this->PANDA_buffer[3] & 0x80)
						{
						$this->PANDA_dispos[] = ($this->PANDA_buffer[0] >> 2) - 1;
						}
					  else
						{
						$this->PANDA_dispos[] = ($this->PANDA_buffer[0] >> 2) - 0;
						}

					$this->PANDA_delays[] = ($this->PANDA_buffer[1] | $this->PANDA_buffer[2] << 8);
					if ($this->PANDA_buffer[3])
						{
						$this->PANDA_TI = $this->PANDA_buffer[3];
						}
					}
				}
			}
		}

	function PANDA_Y()
		{
		$PANDA_screen = Array();
		PANDA_decode::PANDA_get(9);
		$PANDA_screen = $this->PANDA_buffer;
		$PANDA_colorF = $this->PANDA_buffer[8] & 0x80 ? 1 : 0;
		if ($PANDA_colorF)
			{
			$PANDA_code = $this->PANDA_buffer[8] & 0x07;
			$PANDA_sort = $this->PANDA_buffer[8] & 0x20 ? 1 : 0;
			}
		  else
			{
			$PANDA_code = $this->PANDA_colorC;
			$PANDA_sort = $this->PANDA_sorted;
			}

		$PANDA_size = 2 << $PANDA_code;
		$this->PANDA_screen[4]&= 0x70;
		$this->PANDA_screen[4]|= 0x80;
		$this->PANDA_screen[4]|= $PANDA_code;
		if ($PANDA_sort)
			{
			$this->PANDA_screen[4]|= 0x08;
			}

		if ($this->PANDA_TI)
			{
			$this->PANDA_string = "GIF89a";
			}
		  else
			{
			$this->PANDA_string = "GIF87a";
			}

		PANDA_decode::PANDA_add($this->PANDA_screen);
		if ($PANDA_colorF == 1)
			{
			PANDA_decode::PANDA_get(3 * $PANDA_size);
			if ($this->PANDA_TI)
				{
				$this->PANDA_TR = $this->PANDA_buffer[3 * $this->PANDA_TI + 0];
				$this->PANDA_TG = $this->PANDA_buffer[3 * $this->PANDA_TI + 1];
				$this->PANDA_TB = $this->PANDA_buffer[3 * $this->PANDA_TI + 2];
				}

			PANDA_decode::PANDA_add($this->PANDA_buffer);
			}
		  else
			{
			if ($this->PANDA_TI)
				{
				$this->PANDA_TR = $this->PANDA_global[3 * $this->PANDA_TI + 0];
				$this->PANDA_TG = $this->PANDA_global[3 * $this->PANDA_TI + 1];
				$this->PANDA_TB = $this->PANDA_global[3 * $this->PANDA_TI + 2];
				}

			PANDA_decode::PANDA_add($this->PANDA_global);
			}

		if ($this->PANDA_TI)
			{
			$this->PANDA_string.= "!\xF9\x04\x1\x0\x0" . chr($this->PANDA_TI) . "\x0";
			}

		$this->PANDA_string.= chr(0x2C);
		$PANDA_screen[8]&= 0x40;
		PANDA_decode::PANDA_add($PANDA_screen);
		PANDA_decode::PANDA_get(1);
		PANDA_decode::PANDA_add($this->PANDA_buffer);
		for (;;)
			{
			PANDA_decode::PANDA_get(1);
			PANDA_decode::PANDA_add($this->PANDA_buffer);
			if (($u = $this->PANDA_buffer[0]) == 0x00)
				{
				break;
				}

			PANDA_decode::PANDA_get($u);
			PANDA_decode::PANDA_add($this->PANDA_buffer);
			}

		$this->PANDA_string.= chr(0x3B);
		$this->PANDA_arrays[] = $this->PANDA_string;
		}

	function PANDA_get($len)
		{
		$this->PANDA_buffer = Array();
		for ($i = 0; $i < $len; $i++)
			{
			if ($this->PANDA_bfseek > strlen($this->PANDA_stream))
				{
				return 0;
				}

			$this->PANDA_buffer[] = ord($this->PANDA_stream
				{
				$this->PANDA_bfseek++});
				}

			return 1;
			}

		function PANDA_add($bytes)
			{
			foreach($bytes as $byte)
				{
				$this->PANDA_string.= chr($byte);
				}
			}

		function PANDA_frames()
			{
			return ($this->PANDA_arrays);
			}

		function PANDA_delay()
			{
			return ($this->PANDA_delays);
			}

		function PANDAGetLoop()
			{
			return ($this->PANDA_anloop);
			}

		function PANDA_disposal()
			{
			return ($this->PANDA_dispos);
			}

		function PANDA_T_R()
			{
			return ($this->PANDA_TR);
			}

		function PANDA_T_G()
			{
			return ($this->PANDA_TG);
			}

		function PANDA_T_B()
			{
			return ($this->PANDA_TB);
			}
}

[PHP]Function_uploads_frames.php

function upload_file($encoded_string, $target_dir, $frame_name_id){
	    $decoded_file = base64_decode($encoded_string); // decode the file
	    $mime_type = finfo_buffer(finfo_open(), $decoded_file, FILEINFO_MIME_TYPE); // extract mime type
	    $extension = ImageController::mime2ext($mime_type); // extract extension from mime type
	    $file = uniqid() .'.'. $extension; // rename file as a unique name
	    $file_dir = $target_dir . $frame_name_id .'.'. $extension;
	    try {
	        file_put_contents($file_dir, $decoded_file); // save
	        // database_saving($file);
	        // header('Content-Type: application/json');
	        // echo json_encode("File Uploaded Successfully");
	    } catch (Exception $e) {
	        // header('Content-Type: application/json');
	        // echo json_encode($e->getMessage());
	    }

	}
	/*
	to take mime type as a parameter and return the equivalent extension
	*/
	function mime2ext($mime){
	    $all_mimes = '{"png":["image\/png","image\/x-png"],"bmp":["image\/bmp","image\/x-bmp",
	    "image\/x-bitmap","image\/x-xbitmap","image\/x-win-bitmap","image\/x-windows-bmp",
	    "image\/ms-bmp","image\/x-ms-bmp","application\/bmp","application\/x-bmp",
	    "application\/x-win-bitmap"],"gif":["image\/gif"],"jpeg":["image\/jpeg",
	    "image\/pjpeg"],"xspf":["application\/xspf+xml"],"vlc":["application\/videolan"],
	    "wmv":["video\/x-ms-wmv","video\/x-ms-asf"],"au":["audio\/x-au"],
	    "ac3":["audio\/ac3"],"flac":["audio\/x-flac"],"ogg":["audio\/ogg",
	    "video\/ogg","application\/ogg"],"kmz":["application\/vnd.google-earth.kmz"],
	    "kml":["application\/vnd.google-earth.kml+xml"],"rtx":["text\/richtext"],
	    "rtf":["text\/rtf"],"jar":["application\/java-archive","application\/x-java-application",
	    "application\/x-jar"],"zip":["application\/x-zip","application\/zip",
	    "application\/x-zip-compressed","application\/s-compressed","multipart\/x-zip"],
	    "7zip":["application\/x-compressed"],"xml":["application\/xml","text\/xml"],
	    "svg":["image\/svg+xml"],"3g2":["video\/3gpp2"],"3gp":["video\/3gp","video\/3gpp"],
	    "mp4":["video\/mp4"],"m4a":["audio\/x-m4a"],"f4v":["video\/x-f4v"],"flv":["video\/x-flv"],
	    "webm":["video\/webm"],"aac":["audio\/x-acc"],"m4u":["application\/vnd.mpegurl"],
	    "pdf":["application\/pdf","application\/octet-stream"],
	    "pptx":["application\/vnd.openxmlformats-officedocument.presentationml.presentation"],
	    "ppt":["application\/powerpoint","application\/vnd.ms-powerpoint","application\/vnd.ms-office",
	    "application\/msword"],"docx":["application\/vnd.openxmlformats-officedocument.wordprocessingml.document"],
	    "xlsx":["application\/vnd.openxmlformats-officedocument.spreadsheetml.sheet","application\/vnd.ms-excel"],
	    "xl":["application\/excel"],"xls":["application\/msexcel","application\/x-msexcel","application\/x-ms-excel",
	    "application\/x-excel","application\/x-dos_ms_excel","application\/xls","application\/x-xls"],
	    "xsl":["text\/xsl"],"mpeg":["video\/mpeg"],"mov":["video\/quicktime"],"avi":["video\/x-msvideo",
	    "video\/msvideo","video\/avi","application\/x-troff-msvideo"],"movie":["video\/x-sgi-movie"],
	    "log":["text\/x-log"],"txt":["text\/plain"],"css":["text\/css"],"html":["text\/html"],
	    "wav":["audio\/x-wav","audio\/wave","audio\/wav"],"xhtml":["application\/xhtml+xml"],
	    "tar":["application\/x-tar"],"tgz":["application\/x-gzip-compressed"],"psd":["application\/x-photoshop",
	    "image\/vnd.adobe.photoshop"],"exe":["application\/x-msdownload"],"js":["application\/x-javascript"],
	    "mp3":["audio\/mpeg","audio\/mpg","audio\/mpeg3","audio\/mp3"],"rar":["application\/x-rar","application\/rar",
	    "application\/x-rar-compressed"],"gzip":["application\/x-gzip"],"hqx":["application\/mac-binhex40",
	    "application\/mac-binhex","application\/x-binhex40","application\/x-mac-binhex40"],
	    "cpt":["application\/mac-compactpro"],"bin":["application\/macbinary","application\/mac-binary",
	    "application\/x-binary","application\/x-macbinary"],"oda":["application\/oda"],
	    "ai":["application\/postscript"],"smil":["application\/smil"],"mif":["application\/vnd.mif"],
	    "wbxml":["application\/wbxml"],"wmlc":["application\/wmlc"],"dcr":["application\/x-director"],
	    "dvi":["application\/x-dvi"],"gtar":["application\/x-gtar"],"php":["application\/x-httpd-php",
	    "application\/php","application\/x-php","text\/php","text\/x-php","application\/x-httpd-php-source"],
	    "swf":["application\/x-shockwave-flash"],"sit":["application\/x-stuffit"],"z":["application\/x-compress"],
	    "mid":["audio\/midi"],"aif":["audio\/x-aiff","audio\/aiff"],"ram":["audio\/x-pn-realaudio"],
	    "rpm":["audio\/x-pn-realaudio-plugin"],"ra":["audio\/x-realaudio"],"rv":["video\/vnd.rn-realvideo"],
	    "jp2":["image\/jp2","video\/mj2","image\/jpx","image\/jpm"],"tiff":["image\/tiff"],
	    "eml":["message\/rfc822"],"pem":["application\/x-x509-user-cert","application\/x-pem-file"],
	    "p10":["application\/x-pkcs10","application\/pkcs10"],"p12":["application\/x-pkcs12"],
	    "p7a":["application\/x-pkcs7-signature"],"p7c":["application\/pkcs7-mime","application\/x-pkcs7-mime"],"p7r":["application\/x-pkcs7-certreqresp"],"p7s":["application\/pkcs7-signature"],"crt":["application\/x-x509-ca-cert","application\/pkix-cert"],"crl":["application\/pkix-crl","application\/pkcs-crl"],"pgp":["application\/pgp"],"gpg":["application\/gpg-keys"],"rsa":["application\/x-pkcs7"],"ics":["text\/calendar"],"zsh":["text\/x-scriptzsh"],"cdr":["application\/cdr","application\/coreldraw","application\/x-cdr","application\/x-coreldraw","image\/cdr","image\/x-cdr","zz-application\/zz-winassoc-cdr"],"wma":["audio\/x-ms-wma"],"vcf":["text\/x-vcard"],"srt":["text\/srt"],"vtt":["text\/vtt"],"ico":["image\/x-icon","image\/x-ico","image\/vnd.microsoft.icon"],"csv":["text\/x-comma-separated-values","text\/comma-separated-values","application\/vnd.msexcel"],"json":["application\/json","text\/json"]}';
	    $all_mimes = json_decode($all_mimes,true);
	    foreach ($all_mimes as $key => $value) {
	        if(array_search($mime,$value) !== false) return $key;
	    }
	    return false;
	}