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

Description

array array_flip ( array $trans )

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

Parameters

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

Return Values

Returns the flipped array on success and FALSE on failure.

Examples

Example #1 array_flip() example


<?php
$trans = array_flip($trans);
$original = strtr($str, $trans);
?>

Example #2 array_flip() example : collision


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

now $trans is:

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

array_flip

Description

Parameters

Return Values

Examples

See Also