PHP Wysardry
PHP Manual

PHP documentation.



Home / PHP / Manual / ...



PHP Manual
Prev Next

array_flip

(PHP 4 >= 4.0.0)

array_flip -- Flip all the values of an array

Description

array array_flip (array trans)

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

Note that the values of trans 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 flipped.

If a value has several occurrences, the latest key will be used as its values, and all others will be lost.

array_flip() returns FALSE if it fails.

Example 1. array_flip() example

$trans = array_flip ($trans);
$original = strtr ($str, $trans);

Example 2. array_flip() example : collision

$trans = array ("a" => 1, "b" => 1, "c" => 2);
$trans = array_flip ($trans);
print_r($trans);

now $trans is :

Array
(
    [1] => b
    [2] => c
)

Prev Manual Home Next
array_filter Up array_fill
Site Menu

Amazon.ca
Amazon.com
Amazon.co.uk



Most recently updated on 11 May, 2003

Home / PHP / Manual / ...



Please feel free to contact us with any comments or suggestions
PHP Manual
PHP Wysardry

This site is hosted by Spaceports