PHP-Handbuch Funktionsreferenz Non-Text MIME-Ausgaben haru Installation/Konfiguration Anforderungen Installation/Konfiguration Installation Anforderungen You need to install libharu first to be able to use PECL/haru. PECL/haru is tested with libharu 2.0.8, older versions might or might not work for you. PECL/haru also requires PHP 5.1.3 or newer.