php man page for array_flip

Query: array_flip

OS: php

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

ARRAY_FLIP(3)								 1							     ARRAY_FLIP(3)

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

SYNOPSIS
array array_flip (array $array)
DESCRIPTION
array_flip(3) returns an array in flip order, i.e. keys from $array become values and values from $array become keys. Note that the values of $array need to be valid keys, i.e. they need to be either integer or string. A warning will be emitted if a value has the wrong type, and the key/value pair in question will not be included in the result. If a value has several occurrences, the latest key will be used as its value, and all others will be lost.
PARAMETERS
o $array - An array of key/value pairs to be flipped.
RETURN VALUES
Returns the flipped array on success and NULL on failure.
EXAMPLES
Example #1 array_flip(3) example <?php $input = array("oranges", "apples", "pears"); $flipped = array_flip($input); print_r($flipped); ?> The above example will output: Array ( [oranges] => 0 [apples] => 1 [pears] => 2 ) Example #2 array_flip(3) example : collision <?php $input = array("a" => 1, "b" => 1, "c" => 2); $flipped = array_flip($input); print_r($flipped); ?> The above example will output: Array ( [1] => b [2] => c )
SEE ALSO
array_values(3), array_keys(3), array_reverse(3). PHP Documentation Group ARRAY_FLIP(3)
Related Man Pages
array_map(3) - php
array_filter(3) - php
array_reverse(3) - php
array_merge(3) - php
array_unique(3) - php
Similar Topics in the Unix Linux Community
formating array file output using perl
Array Declaration and For Loop
Rotate an array
space not allowed in input
Storage Array not readable