PHP in_array() Function

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# PHP in_array() Function

PHP Array Reference

## 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";
}
?>
Run example »

## 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 | 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+
Changelog: | As of PHP 4.2, the search parameter may now be an array

## More Examples

## Example 1

Using all parameters:

<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland", 23);
if (in_array("23", $people, TRUE))
{
echo "Match found<br>";
}
else
{
echo "Match not found<br>";
}
if (in_array("Glenn",$people, TRUE))
{
echo "Match found<br>";
}
else
{
echo "Match not found<br>";
}
if (in_array(23,$people, TRUE))
{
echo "Match found<br>";
}
else
{
echo "Match not found<br>";
}
?>
Run example »

PHP Array Reference

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