php inline callback

Question

A quick question.

Is it possible to declare the callback function inline, in php? For example,

array_filter($input_array, "function($item) { $item['state'] != 0 }")

Answer 1

with create_function? ex:

 $result = array_filter($array, create_function('$a','return preg_match("#\S#", $a);'));     

Answer 2

Yes, after php 5.3, you could use anonymous function.

array_filter($input_array, function($item) { return $item['state'] != 0; });

Answer 3

array_filter($input_array, function($item) { 
    return $item['state'] != 0;
});

This functionality is available from 5.3 or > version of php. In 5.4> version will support $this in inline Anonymous Functions

link for php callback > How do I implement a callback in PHP?

Answer 4

Sure it calls anonymous functions:

array_filter($input_array, function($item) { 
    return $item['state'] != 0;
});