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php-gdHow to align text to center horizontally


<?php

$im = imagecreatetruecolor(400, 300);

$c_black = imageColorAllocate($im, 0,0,0);
$c_green = imageColorAllocate($im, 46,204,64);
$text = 'Hi';

$font = '/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf';
$p = imagettfbbox(40, 0, $font, $text);

imagettftext($im, 40, 0, (400 - $p[2])/2, 100, $c_green, $font, $text);
imagePng($im, '/tmp/image.png');ctrl + c
imagecreatetruecolor

creates true color GD image object with specified width & height

imageColorAllocate

creates color object to later use in image

$font

path to ttf font to use

imagettfbbox

return size of box that given text fits into

imagettftext

draw text with given ttf font

(400

$p[2])/2- calculatex` coordinate so our text is centered horizontally

imagePng

saves image in PNG format to the given path


How to align text to center horizontally, php gd

Usage example

<?php

$im = imagecreatetruecolor(400, 300);

$c_black = imageColorAllocate($im, 0,0,0);
$c_green = imageColorAllocate($im, 46,204,64);
$text = 'Hi';

$font = '/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf';
$p = imagettfbbox(40, 0, $font, $text);

imagettftext($im, 40, 0, (400 - $p[2])/2, 100, $c_green, $font, $text);
imagePng($im, '/tmp/image.png');