Using GD to create a text image

[c_shelswell]

Hi,

 

I'm looking to make a selection of text headers for multiple sites using different fonts so I thought I'd try and use php to automate the process for me. Writing the text seems easy enough (imagettftext) but what i'm struggling with is how to set the size of the image to only be as big as is required by the length of the string i'm passing imagettftext.

 

Is there anyway to do this?

 

Cheers

[c_shelswell]

Nobody have any ideas on this??

 

Cheers

[craygo]

You could always just play around with certain sizes till you get a base. Lets say it take 15 pixels to create one letter with a space, you could get the length of the string and multiply it by the value.

 

$text = "menu Item";

$length = strlen($text);

$value = 15;

 

$width = $length * $value;

 

that way it will be dynamic.

 

Ray

[c_shelswell]

that's a really simple good idea. I was simply expecting it to be complicated so got lost!!

 

Thanks very much

[Barand]

If you are using the gd monospaced fonts

<?php
$text = 'Hello World';
$w = imagefontwidth(5) * strlen($text);
$h = imagefontheight(5);

$im = imagecreate ($w + 10, $h+10);
$bg = imagecolorallocate($im, 200, 200, 200);
$tcol = imagecolorallocate($im, 255, 0, 0);

imagestring($im, 5, 5, 5, $text, $tcol);

header("content-type: image/png");
imagepng ($im);
imagedestroy($im);
?>

 

If you use truetype font

<?php
$text = 'Hello World';

$bb = imagettfbbox(20, 0, 'c:/windows/fonts/arial.ttf', $text);
$w = abs($bb[4] - $bb[0]);
$h = abs($bb[5] - $bb[1]);

$im = imagecreate ($w + 20, $h+20);
$bg = imagecolorallocate($im, 200, 200, 200);
$tcol = imagecolorallocate($im, 255, 0, 0);

imagettftext($im, 20, 0, 10, $h+10, $tcol, 'c:/windows/fonts/arial.ttf', $text);

header("content-type: image/png");
imagepng ($im);
imagedestroy($im);
?>

[c_shelswell]

exactly what i was looking for - thanks for your help