PHP: Anonymous functions

Anonymous functions, also known as closures, allow the creation of functions which have no specified name. They are most useful as the value of callback parameters, but they have many other uses. as example:

<?php
echo preg_replace_callback('~-([a-z])~', function ($match) {
return 
strtoupper($match[1]);
}, 
'hello-world');
// outputs helloWorld
?>

 

another one:

<?php
$greet 
= function($name)
{
printf(“Hello %s\r\n”$name);
};

$greet(‘World’);
$greet(‘PHP’);
?>

this concept is available from PHP 5.3

PHP: Anonymous functions – Manual.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s