array_flip
(PHP 4, PHP 5)
array_flip — Exchanges all keys with their associated values in an array
Description
array array_flip
( array $trans
)
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);
?>
Array
(
[1] => b
[2] => c
)
array_filter
