PHP - array_search

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Metóda - array_search

(PHP 4 >= 4.0.5, PHP 5, PHP 7)

Searches the array for a given element. We talk about the problem as about searching for a needle in a haystack.

Procedurálne

• function array_search (mixed $needle, array $haystack, bool $strict = false) : mixed

Parametre

Názov	Dátový typ	Predvolená hodnota	Popis
$needle	mixed		A needle (a string to find).
$haystack	array		A haystack (where to search).
$strict	bool	false	The third optional parameter is a type of boolean and it specifies if we want to strictly compare elements using ===.

Mávratovej hodnoty

Vracia: mixed

A key under which a needle is found. It returns FALSE in the case of failure. As the needle can be found on the position 0, the result must be compared using ===. If invalid parameters are passed, it returns NULL.

Príklady

<?php
$array = ['Homer', 'Marge', 'Bart', 'Lisa', 'Meggie'];
$key = array_search('Bart', $array);

echo $key;