PHP: in_array() function
PHP: Checks if a value exists in an array
The in_array() function is used to check whether a value exists in an array or not.
Note: Searches haystack for needle using loose comparison unless strict is set.
Version:
(PHP 4 and above)
Syntax:
in_array(search_value, array_name, mode)
Parameters:
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| search_value | Value to search in the array. | Required | Mixed* |
| array_name | Specifies the array to search. | Required | Array |
| mode | If it is set to true, the function checks the type of the search_value. | Optional | Boolean |
*Mixed : Mixed indicates that a parameter may accept multiple (but not necessarily all) types.
Return value:
TRUE if search_value is found in array_name, FALSE otherwise.
Value Type : Boolean.
Example:
<?php
$number_list = array('16.10', '22.0', '33.45', '45.45');
if (in_array(22.0, $number_list))
{
echo "'22.0' found in the array";
}
?>
Output:
'22.0' found in the array
Pictorial Presentation:
View the example in the browser
Practice here online :
See also
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https://www.w3resource.com/php/function-reference/in_array.php
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