PHP Class: writing functions inside an object? - php

Question

I wonder if this below is possible in php class object, just as I would do in javascript (jquery).
In jquery, I would do,
(function($){
var methods = {
init : function( options ) {
// I write the function here...
},
hello : function( options ) {
// I write the function here...
}
}
$.fn.myplugin = function( method ) {
if ( methods[method] ) {
return methods[method].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof method === 'object' || ! method ) {
return methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + method + ' does not exist.' );
}
return this;
};
})(jQuery);
So, when I want to call a function inside myplugin, I just do this,
$.fn.myplugin("hello");
So, I thought, there might be a way to do this in php as well when you come to write a class?
$method = (object)array(
"init" => function() {
// I write the function here...
},
"hello" => function() {
// I write the function here...
}
);
EDIT:
Could it be a class like this?
class ClassName {
public function __construct(){
//
}
public function method_1(){
$method = (object)array(
"init" => function() {
// I write the function here...
},
"hello" => function() {
// I write the function here...
}
);
}
public function method_2(){
$method = (object)array(
"init" => function() {
// I write the function here...
},
"hello" => function() {
// I write the function here...
}
);
}
}

Answer 1

Your $.fn.myplugin function is very similar to the __call() magic function in PHP. However, you would have to define it in a class and emulate the logic:
class Example {
private $methods;
public function __construct() {
$methods = array();
$methods['init'] = function() {};
$methods['hello'] = function() {};
}
public function __call($name, $arguments) {
if( isset( $methods[$name])) {
call_user_func_array( $methods[$name], $arguments);
} else if( $arguments[0] instanceof Closure) {
// We were passed an anonymous function, I actually don't think this is possible, you'd have to pass it in as an argument
call_user_func_array( $methods['init'], $arguments);
} else {
throw new Exception( "Method " . $name . " does not exist");
}
}
}
Then, you would do:
$obj = new Example();
$obj->hello();
It's not tested but hopefully it's a start.

Answer 2

PHP supports Closure (Anonymous functions)
similar to jQuery take a look at
function x(callable $c){
$c();
}
then use
x(function(){
echo 'Hello World';
});

Answer 3

class ClassName {
public function __construct(){
//this is your init
}
public function hello(){
//write your function here
}
}
is how you would write it
then
$a = new ClassName()
$a->hello();
to call it