PHP array_filter() function
Example
Filter elements in the array using a callback function:
<?php
function test_odd($var)
{
return($var & 1);
}
$a1=array("a","b",2,3,4);
print_r(array_filter($a1,"test_odd"));
?>
Definition and Usage
The array_filter() function filters the values in the array using a callback function.
This function passes each key-value pair of the input array to the callback function. If the callback function returns true, then the current key-value pair of the input array is returned in the result array. The array keys remain unchanged.
Syntax
array_filter(array,callbackfunction);
| Parameter | Description |
|---|---|
| array | Required. Specifies the array to filter. |
| callbackfunction | Required. Specifies the callback function to use. |
Technical Details
| Return value: | Return filtered array. |
| PHP Version: | 4.0.6+ |
