Reference Guide

Configuring PHP for Performance
Zend Server Best Practices
You may be able to add an additional performance boost to your PHP applications by properly configuring
your PHP runtime environment settings. You can edit the directives below from the Administration
Interface via Server Setup | Directives.
Warning:
Changing some of these settings may cause certain PHP applications to stop functioning. Therefore, use
discretion when you disable them and test your environment: It is important that you fully understand the
purpose of each directive before you modify it.
Optimal php.ini configurations and settings for maximum performance optimization:
Name Recommended
Value
Zend Server
Default
Description
realpath_cache_size 256K 256K Determines the size of the realpath
cache to be used by PHP. This
value should be increased on
systems where PHP opens many
files, to reflect the quantity of the
file operations performed.
realpath_cache_ttl 120 120 Duration (in seconds) for which to
cache realpath information for a
given file or directory. For systems
with rarely changing files, consider
increasing the value.
error_reporting E_ALL &
~E_NOTICE
E_ALL The error_reporting() function sets
the error_reporting directive at
runtime. PHP has many levels of
errors: Using this function sets the
error level for the duration
(runtime) of your script.
register_long_arrays Off Off Tells PHP whether or not to
register the deprecated long
$HTTP_*_VARS type predefined
variables. When On (default), long
predefined PHP variables (like
$HTTP_GET_VARS) are defined.
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