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PHP in_array() Function
Complete PHP Array Reference
Definition and Usage
The in_array() function searches an array for a specific value.
This function returns TRUE if the value is found in the array, or FALSE otherwise.
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, the in_array() function searches for the search-string and specific type in the array |
Tips and Notes
Note: If the search parameter is a string and the type parameter is set to TRUE, the search is case-sensitive.
Example 1
<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");
if (in_array("Glenn",$people))
{
echo "Match found";
}
else
{
echo "Match not found";
}
?>
$people = array("Peter", "Joe", "Glenn", "Cleveland");
if (in_array("Glenn",$people))
{
echo "Match found";
}
else
{
echo "Match not found";
}
?>
The output of the code above will be:
Match found
Example 2
<?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 />";
}
?>
$people = array("Peter", "Joe", "Glenn", "Cleveland", 23);
if (in_array("23",$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 />";
}
?>
The output of the code above will be:
Match not found
Match found
Match found
Complete PHP Array Reference
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W3Schools is optimized for learning, testing, and training. Examples might be simplified to improve reading and basic understanding.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.