General

When starting MAMP

Start servers

Apache/Nginx and MySQL start automatically when MAMP opens.

Check for updates

MAMP checks for updates on launch and notifies you when one is available.

Open WebStart Page

The WebStart page opens automatically when MAMP starts.

When quitting MAMP

Stop servers

Apache/Nginx and MySQL stop automatically when MAMP quits.

PHP Cache

PHP cache extensions can speed up execution by storing compiled bytecode. Disabled by default. Enabling a cache does not guarantee a performance improvement; a cache option is only available if it supports the active PHP version.

Some caches provide a profiling UI – see the Tools menu on the WebStart page.

off

No PHP cache module is used.

APC

APC User Cache – a free, open opcode cache for PHP. Learn more.

OPcache

Stores precompiled script bytecode in shared memory, so PHP skips parsing on every request. Learn more.