PHP array_search() function usage and example

PHP Array Function Manual

　The PHP array_search() function searches for the given value in the array and returns the first matching key name if successful.

Syntax

array_search($value, $array [,$strict]);

Definition and Usage

The array_search() function searches for a value in an array and returns the key.

Parameter

Return value

If it is found in the array, it returns the key, otherwise it returns FALSE.

If the value appears more than once in the array, it returns the first matching key. To return all matching keys, use array_keys() with the optional parameter search_value instead.

Online example

<?php
　　　$input = array("a" => "banana", "b" => "apple", "c" => "Mango");
　　　
　　　print_r(array_search("apple", $input));
?>

Output result:

b

　PHP Array Function Manual