Anonymous user / 54.167.230.68 Log In Register
?
Wallet: 3.00
Daily Credits:
1.20 / 1.20

PHP Functions Online


array_keys

(PHP 4, PHP 5)

array_keysReturn all the keys or a subset of the keys of an array

array array_keys(array $array[, mixed $search_value = NULL[, bool $strict = false]])

Checkout ? #

Item Description Item Price Your Price
Total

Preview #

${{ variable.param.name }} = {{ variable.param|getValue:variable.form:true }};
{{ call.result}} = ;

Description #

array array_keys ( array $array [, mixed $search_value = NULL [, bool $strict = false ]] )

array_keys() returns the keys, numeric and string, from the array.

If the optional search_value is specified, then only the keys for that value are returned. Otherwise, all the keys from the array are returned.

Parameters #

array

An array containing keys to return.

search_value

If specified, then only keys containing these values are returned.

strict

Determines if strict comparison (===) should be used during the search.

Return Values #

Returns an array of all the keys in array.

Examples #

Example #1 array_keys() example

<?php
$array 
= array(=> 100"color" => "red");
print_r(array_keys($array));

$array = array("blue""red""green""blue""blue");
print_r(array_keys($array"blue"));

$array = array("color" => array("blue""red""green"),
               
"size"  => array("small""medium""large"));
print_r(array_keys($array));
?>

The above example will output:

Array
(
    [0] => 0
    [1] => color
)
Array
(
    [0] => 0
    [1] => 3
    [2] => 4
)
Array
(
    [0] => color
    [1] => size
)

Changelog #

Version Description
5.0.0 Added the strict parameter.

See Also #