Yosemite / El Capitan php-gd + mcrypt installation
问题 How to install/enable php-gd and mcrypt in Yosemite 10.10 - PHP 5.5.14 build? note that following steps install newest PHP 5.5.x To check if you have gd and mcrypt installed use $ php -m to display compiled in modules, continue if you are missing desired modules and please see accepted answer . GD So, Apple installed GD (and you're using their build of PHP, which is fine), but did not include support for PNG. You are definitely missing "full" gd (with png support) module if: