txt_img.php

<?php
	$def_font='HelveticaBold.ttf';
	$err_font='HelveticaBold.ttf';
	$font_folder='fonts/';

	if( isset($_GET['w']) ) $w=my_txt_img_stsl($_GET['w']);
	else $w=0;

	if( isset($_GET['s']) ) $size=my_txt_img_stsl($_GET['s']);
	else $size=127;
	
	if( isset($_GET['f']) ) {
		$FontName=str_replace('/','',my_txt_img_stsl($_GET['f']));
		$font=$font_folder.$FontName;
	} else $font=$font_folder.$def_font;
	
	
	if( isset($_GET['h']) ) $h=my_txt_img_stsl($_GET['h']);
	else $h=0;
	
	if( isset($_GET['c']) ) $c=my_txt_img_stsl($_GET['c']);
	else $c='0,0,0';
	$c=explode(',',trim($c));
	foreach($c as $idx=>$cItm) {
		$c[$idx]=intval(trim($cItm));
	}
	
	if( isset($_GET['bc']) ) $bc=my_txt_img_stsl($_GET['bc']);
	else $bc='255,255,255';
	$bc=explode(',',trim($bc));
	foreach($bc as $idx=>$bcItm) {
		$bc[$idx]=intval(trim($bcItm));
	}
	
	
	if( isset($_GET['t']) ) $t=my_txt_img_stsl($_GET['t']);
	else {
		$t='Missing parameter: t=text+to+write';
		$c=array(255,0,0);
		$font=$font_folder.$err_font;
		$size=24;
	}
	if(!file_exists($font)) {
		$t='Font "'.$FontName.'" not found in font folder (upload file or change font name)';
		$c=array(255,0,0);
		$font=$font_folder.$err_font;
		$size=24;
	}
	
	$TextBox=imagettfbbox($size,0.0, $font,$t);
	
	$off_x=-$TextBox[6];
	$off_y=-$TextBox[7];

	$TextHSize=$TextBox[2]-$TextBox[6];
	$TextVSize=$TextBox[3]-$TextBox[7];

	
	//$TextHSize=ImageFontWidth ($font ) * strlen ($t);
	//$TextVSize=ImageFontHeight ($font );
	
	if( isset($_GET['b']) ) {
		$b=$_GET['b'];
		$hb=$b;
		$vb=$b;
	} else {
		$b=5;
		$hb=$b;
		$vb=$b;
		if($w!=0) {
			$hb=($w-$TextHSize)/2;
		}
		if($h!=0) {
			$vb=($h-$TextVSize)/2;
		}
	}
	
	if($w==0) $w=$TextHSize+2*$hb;
	if($h==0) $h=$TextVSize+2*$vb;
	
	//echo($TextHSize.','.$TextVSize.'<br>');
	
	
	//echo($w.','.$h.'<br>');
	$im =  imageCreate  ($w	 ,$h )
		or die( "Cannot Initialize new GD image stream" );
	$text_color =imagecolorallocate ($im ,$c[0] ,$c[1] ,$c[2] );
	$back_color =imagecolorallocate ($im ,$bc[0] ,$bc[1] ,$bc[2] );
	$BlackCol =imagecolorallocate  ($im ,0 ,0 ,0 );
	//$BlackCol =imageColorClosest ($im 0 ,0 ,0 );
	
	if($BlackCol<0) {
		$BlackCol=0;
		$t='Error in color allocation';
	}
	imagefilledrectangle ( $im, 0, 0, $w, $h, $back_color);
	imagettftext  ( $im, $size, 0, $off_x+$hb,$off_y+$vb, $text_color, $font,  $t );
			//readfile('fonts/Chalkboard.ttf');
	//echo(`locate .TTF`);
	//echo('1');
	//imagestring ($im,5,$hb,$vb,$t,$BlackCol );
	
	if ( function_exists ("imagegif" )) { 
		header ("Content-type: image/gif" ); 
		//imagettftext  ( $im, 12, 30, 25,25, $BlackCol, $font_folder.$def_font,  'GIF' );
		imagegif ($im );
	} elseif ( function_exists ("imagejpeg" )) { 
		header ("Content-type: image/jpeg" );
		//imagettftext  ( $im, 12, 50, 25,25, $BlackCol, $font_folder.$def_font,  'JPG' );
		imagejpeg ($im,'',80);
	} else {
		header ("Content-type: image/png" ); 
		//imagettftext  ( $im, 12, 50, 25,25, $BlackCol, $font_folder.$def_font,  'PNG' );
		imagepng ($im ); 
	}
	imagedestroy ($im );
	
	function my_txt_img_stsl($txt) {
		return stripslashes($txt);
	}
?>