WordPress server requirements

20th October 2009

WordPress has famously low-level basic server requirements. However, most projects I deploy—because of plugins I rely on and other aspects—usually need a little more for “ideal” hosting.

Someone else used to maintain a really good “ideal” WP requirements page, but it seems to have vanished from their site. I thought I’d start my own, for my reference, to point potential clients to, and maybe of use to others.

The server should be running:

• Linux
• Apache
• PHP 5+
• MySQL 4+

Also, these factors are very important:

• The mod_rewrite Apache module should be installed and enabled.
• PHP safe_mode should be OFF. Turning it on is a bad attempt to manage security on shared hosting.
• The PHP memory_limit should be 32 MB at least. If it’s not at least this by default, it should be possible to increase it to at least this.

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