Req #43899 [Sus->Opn]: Problem in displaying right to left connected languages (like persian, arabic)

Edit report at https://bugs.php.net/bug.php?id=43899&edit=1 ID: 43899 Updated by: cmb@php.net Reported by: mohamnag at gmail dot com Summary: Problem in displaying right to left connected languages (like persian, arabic) -Status: Suspended +Status: Open Type: Feature/Change Request Package: GD related Operating System: * PHP Version: 6 Block user comment: N Private report: N New Comment: CTL support is available as of GD 2.3.0, but that has not yet been ported to the bundled GD. Previous Comments: ------------------------------------------------------------------------ [2016-09-14 14:08:51] cmb@php.net Indeed, libgd does not yet support complex text layout except in master, but this is not a bug, but rather a missing feature. Anyhow, I'm suspending this ticket until libgd actually releases CTL support. ------------------------------------------------------------------------ [2016-09-14 14:05:29] cmb@php.net Related To: Bug #72912 ------------------------------------------------------------------------ [2008-10-27 12:58:26] jani@php.net Assigned to the GD maintainer. ------------------------------------------------------------------------ [2008-01-20 12:28:29] mohamnag at gmail dot com Description: ------------ There is an issue displaying Persian characters in GD generated images. In persian, characters are arranged right to left (I mean first char is the most right hand arranged one). In addition characters are connected. For example while ی and ک are being written when separated, they should be written یک when connected. So not only they should be arranged right to left but also the shape of characters change during connections. However displaying text using GD don't arrange persian characters right to left nor connects them correctly. Some persian developers have made a php function which corrects the problem here: http://persiangd.berlios.de/doku.php but I think it should be solved globally in the original lib. Reproduce code: --------------- header("Content-type: image/png"); //uncomment to correct issue: //include("fagd.php"); $text="یک"; $im = imagecreate(800, 40); // Create some colors $white = imagecolorallocate($im, 255, 255, 255); $grey = imagecolorallocate($im, 128, 128, 128); $black = imagecolorallocate($im, 0, 0, 0); //uncomment to correct issue: //$text = fagd($string,'fa'); $font = dirname(__FILE__).'/tahoma.ttf'; // Add the text imagettftext($im, 20, 0, 20, 25, $black, $font,$text); imagepng($im); imagedestroy($im); Expected result: ---------------- this is an image displaying the correct output resulting from passing the text to imagettftext(), after being parsed using the fagd() function (provided by persian developers to correct the issue): http://khone.ir/test/t2.png Actual result: -------------- this is an image displaying the problematic view resulting from direct input of persian text to imagettftext(): http://khone.ir/test/t1.png ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=43899&edit=1