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#Setting up PHP
## Use Flags
In order for PHP to be most useful, it should have as many of the modules installed as will be used. I recommend installing it using the FPM sapi, which manages php session spawning.
Here are some recommended flags:
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`mysql utf8 threads -readline libssh2 -cgi fpm xcache suhosin postgres
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mysqlnd reflection session simplexml sockets spl pdo mbstring sqlite3
mysqli soap exif`
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## PHP_TARGETS
The `PHP_TARGETS` setting in `/etc/make.conf` lets you select which versions of PHP to compile. If possible, I recommend always using the latest stable version.
As of the time this is written, php 5.3 is the latest version, so I would add this line to `/etc/make.conf`
`PHP_TARGETS="php5-3"`
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Please note that you can have multiple PHP_TARGETS:
`PHP_TARGETS="php5-3 php5-4"`
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As of this writing, PHP compiles with clang reliably.
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## php.ini and php-fpm.conf
### php.ini
This file is going to be under `/etc/php/[sapi]-php[version]/php.ini`
So, if I'm running php 5.3, and I want to adjust cli settings, the file is `/etc/php/cli-php5.3/php.ini`
#### Mandatory settings
* `date.timezone` - set to your default timezone, for example, `America/Detroit`
#### Recommended settings
* `short_open_tag = On` - Allow short tags `<? and <?=`
* `expose_php = Off` - With this enabled, a pointless server header is sent out, and some magic urls are enabled. There's no reason to enable this.
### php-fpm.conf
When compiling PHP with FPM, there is another config file, `php-fpm.conf` .
When starting php, it will through an annoying message if you don't have the
`pm.start_servers` setting configured.
A good default is to set `pm.start_servers = 20`
