PHP in_array() Function

Example

Search for the value "Glenn" in an array and output some text:

<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");

if (in_array("Glenn", $people))
 {
 echo "Match found";
 }
else
 {
 echo "Match not found";
 }
?>

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Definition and Usage

The in_array() function searches an array for a specific value.

Note: If the search parameter is a string and the type parameter is set to TRUE, the search is case-sensitive.

Syntax

in_array(search, array, type)

Parameter Values

Parameter	Description
search	Required. Specifies the what to search for
array	Required. Specifies the array to search
type	Optional. If this parameter is set to TRUE, the in_array() function searches for the search-string and specific type in the array.

Technical Details

Return Value:	Returns TRUE if the value is found in the array, or FALSE otherwise
PHP Version:	4+
PHP Changelog:	PHP 4.2: The search parameter may now be an array

More Examples

Example

Using all parameters:

<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland", 23);

if (in_array("23", $people, TRUE))
{
echo "Match found ";
}
else
{
echo "Match not found ";
}
if (in_array("Glenn",$people, TRUE))
{
echo "Match found ";
}
else
{
echo "Match not found ";
}

if (in_array(23,$people, TRUE))
{
echo "Match found ";
}
else
{
echo "Match not found ";
}
?>

Try it Yourself »

❮ PHP Array Reference