Funktionsreferens
PHP Manual

Array Functions

Introduktion

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.

Krav

Inga externa bibliotek behövs för att bygga det tillägg.

Installation

Inga extra installationer behövs för att använda dessa funktioner; de är en del av PHP-kärnan.

Konfiguration under drift

Den här utbyggnaden definerar inte några konfigurationsdirektiv i php.ini.

Resurstyper

Den här utbyggnaden har inte några resurstyper definerade.

Fördefinerade konstanter

Konstanter som listas här är alltid tillgängliga som en del av PHP-kärnan.

CASE_LOWER (integer)
CASE_LOWER is used with array_change_key_case() and is used to convert array keys to lower case. This is also the default case for array_change_key_case().
CASE_UPPER (integer)
CASE_UPPER is used with array_change_key_case() and is used to convert array keys to upper case.

Sorting order flags:

SORT_ASC (integer)
SORT_ASC is used with array_multisort() to sort in ascending order.
SORT_DESC (integer)
SORT_DESC is used with array_multisort() to sort in descending order.

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.
SORT_LOCALE_STRING (integer)
SORT_LOCALE_STRING is used to compare items as strings, based on the current locale. Added in PHP 4.4.0 and 5.0.2.

COUNT_NORMAL (integer)
COUNT_RECURSIVE (integer)
EXTR_OVERWRITE (integer)
EXTR_SKIP (integer)
EXTR_PREFIX_SAME (integer)
EXTR_PREFIX_ALL (integer)
EXTR_PREFIX_INVALID (integer)
EXTR_PREFIX_IF_EXISTS (integer)
EXTR_IF_EXISTS (integer)
EXTR_REFS (integer)

Se också

See also is_array(), explode(), implode(), split(), preg_split(), and unset().

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Funktionsreferens
PHP Manual