Change the font used by ImageString - php

Question

I have this PHP code:
<?php
//Other part of code
Header("Content-type: image/png");
$im = imagecreatefromPng("./images/signatures/background.png");
$red = ImageColorAllocate($im, 255, 0, 0);
$black = ImageColorAllocate($im, 0, 0, 0);
ImageString($im, 5, 15, 5, "$callsign", $black);
ImageString($im, 5, 15, 20, "$name $surname", $black);
ImageString($im, 5, 15, 35, "Location: $location", $black);
ImageString($im, 5, 15, 50, "HUB: $hub", $black);
ImageString($im, 5, 15, 65, "Hours: $hours", $black);
$font_width = ImageFontWidth(5);
ImagePng($im);
?>
I want to change the font that PHP uses to write in the image. How can i do that?? I try but I can´t.

Answer 1

Assuming that you mean font:
http://www.php.net/manual/en/function.imageloadfont.php
http://php.net/manual/en/function.imagettftext.php this may help if your using ttf fonts

Answer 2

You can use imageloadfont ();
syntax:
int imageloadfont ( string $file )
Example:
// Create a new image instance
$im = imagecreatetruecolor(50, 20);
$black = imagecolorallocate($im, 0, 0, 0);
$white = imagecolorallocate($im, 255, 255, 255);
// Make the background white
imagefilledrectangle($im, 0, 0, 49, 19, $white);
// Load the gd font and write 'Hello'
$font = imageloadfont('./04b.gdf');
imagestring($im, $font, 0, 0, 'Hello', $black);
// Output to browser
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
so change your code to:
//Other part of code
Header("Content-type: image/png");
$im = imagecreatefromPng("./images/signatures/background.png");
$font = imageloadfont('./fonts/arial.gdf');//change the parameter based on your font file name
$red = ImageColorAllocate($im, 255, 0, 0);
$black = ImageColorAllocate($im, 0, 0, 0);
ImageString($im, $font, 15, 5, "$callsign", $black);
ImageString($im, $font, 15, 20, "$name $surname", $black);
ImageString($im, $font, 15, 35, "Location: $location", $black);
ImageString($im, $font, 15, 50, "HUB: $hub", $black);
ImageString($im, $font, 15, 65, "Hours: $hours", $black);
$font_width = ImageFontWidth(5);
ImagePng($im);