PHP: array_filter() function

PHP: Filters elements of an array using a callback function

The array_filter() function passes each value of a given array to a user defined function. If the user defined function allows, the current value from the array is returned into the result array.

Note: The function Iterates over each value in the array passing them to the callback function. If the callback function returns true, the current value from the array is returned into the result array. Array keys are preserved.

Version:

(PHP 4 and above)

Syntax:

array_filter(input_array, user_defined_function)

Parameter:

Return value:

The filtered array.

Value Type: Array

Example:

<?php
function my_function($item_values)
{
if ($item_values>100)
{
return true;
}
return false;
}
$item_list=array("Item1" => 100, "Item2" => 200, "Item3" => 125, "Item4" => 100);
print_r(array_filter($item_list,"my_function"));
?>

Output:

Array ( [Item2] => 200 [Item3] => 125 )

Pictorial Presentation:

View the example in the browser

Practice here online :

PHP Function Reference

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