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PHP array_filter() Function

Complete PHP Array Reference

Definition and Usage

The array_filter() function passes each value in the array to a user-made function, which returns either true or false, and returns an array only with the values that returned true.

Syntax

array_filter(array,function)

Parameter	Description
array	Required. Specifies an array
function	Required. Name of the user-made function

Example

<?php
function myfunction($v)
{
if ($v==="Horse")
  {
  return true;
  }
return false;
}
$a=array(0=>"Dog",1=>"Cat",2=>"Horse");
print_r(array_filter($a,"myfunction"));
?>

The output of the code above will be:

Array ( [2] => Horse )