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how-to-align-text-to-center-horizontally.md

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How 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');
  • imagecreatetruecolor - creates true color lib: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 - calculate x coordinate so our text is centered horizontally
  • imagePng - saves image in PNG format to the given path

group: text

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');