#!/usr/bin/php -q
<?php

error_reporting(E_ALL);

$dispatch_table = array(

        # create some anonymous functions
        'foo' => create_function('$a', 'return "foo got $a\n";'),
        'bar' => create_function('$a', 'return "bar got $a\n";'),
        'baz' => create_function('$a', 'return "baz got $a\n";')
);

print $dispatch_table['foo']('hello');
print $dispatch_table['bar']('hi');
print $dispatch_table['baz']('yo');
?>
# outputs
foo got hello
bar got hi
baz got yo


##</code><code>##

$baz = "DEFAULT VALUE";
function bar(){return  "Assigned value";}
function quux(){return false;}

$foo = bar() ? bar() : $baz;
print "$foo\n";

$foo = quux() ? quux : $baz;
print "$foo\n";
# outputs
Assigned value
DEFAULT VALUE