These functions allow you to interact with and manipulate arrays in various ways. Arrays are essential for storing, managing, and operating on sets of variables.
Simple and multi-dimensional arrays are supported, and may be either user created or created by another function. There are specific database handling functions for populating arrays from database
queries, and several functions return arrays.
Please see the Arrays section of the manual for a detailed explanation of how arrays are implemented and used in PHP. See also Array operators for other ways how to manipulate the arrays.
No external libraries are needed to build this extension.
There is no installation needed to use these functions; they are part of the PHP core.
This extension has no configuration directives defined in php.ini.
This extension has no resource types defined.
The constants below are always available as part of the PHP core.
Sorting order flags:
Sorting type flags: used by various sort functions
- SORT_REGULAR (integer)
SORT_REGULAR is used to compare items normally.
- SORT_NUMERIC (integer)
SORT_NUMERIC is used to compare items numerically.
- SORT_STRING (integer)
SORT_STRING is used to compare items as strings.