array_flip()

array_flip - Exchanges all keys with their associated values in an array

Syntax

array array_flip (array $trans)

Arguments

• trans - An array of key/value pairs to be flipped.

Description

array_flip() returns an array in flip order, i.e. keys from trans become values and values from trans become keys.

Version

PHP 4, 5

Return value

Returns the flipped array on success and NULL on failure.