JavaScript array_walk_recursive

Apply a user function recursively to every member of an array

function array_walk_recursive (array, funcname, userdata) {
    // Apply a user function recursively to every member of an array  
    // 
    // version: 1008.1718
    // discuss at: http://phpjs.org/functions/array_walk_recursive    // +   original by: Johnny Mast (http://www.phpvrouwen.nl)
    // *     example 1: array_walk_recursive ({'a': 'b', 'c': {'d': 'e'}}, 'void', 'userdata');
    // *     returns 1: true
    // *     example 2: array_walk_recursive ('a', 'void', 'userdata');
    // *     returns 2: false    
    var key;
    
    if (typeof array != 'object'){
        return false;    }
 
    for (key in array) {            
        if (typeof array[key] == 'object') { 
            return this.array_walk_recursive(array [key], funcname, userdata);        }
        
        if (typeof (userdata) != 'undefined') {
            eval(funcname + '( array [key] , key , userdata  )');
        } else {            eval(funcname + '(  userdata ) ');
        }
    }
    
    return true;}

external links: original PHP docs | raw js source

Examples

» Example 1

Running

1	array_walk_recursive ({'a': 'b', 'c': {'d': 'e'}}, 'void', 'userdata');

Should return

true

» Example 2

Running

1	array_walk_recursive ('a', 'void', 'userdata');

Should return

false

Dependencies

No dependencies, you can use this function standalone.

Open syntax issues

php.js uses JsLint to help us keep our code consistent and prevent some common bugs.

Eventually we want all code to pass or at least take into consideration most fixes suggested by JsLint, following this JsLint configuration we’ve decided on.

Authors

Thanks to the following developers, you get to have array_walk_recursive goodness in JavaScript.

Johnny Mast ( original )

Comments

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Use:

[CODE]
your_stuff('here');
[/CODE]

for proper code formatting
By submitting code here you are allowing us to use it in php.js hence dual licensing it under the MIT and GPL licenses

Basti
13 Oct '09

Please prefer prototyping instead of doing something like this. Instead of polluting the users memory...Prototypes are just ONCE instanced in memory, but are applied for every existing array.

Example:

Array.prototype.myFunction = function (yourArgumentsGoHere) {
 // doWhatever you want to apply 
}

Basti
13 Oct '09

Array.prototype.myFunction = function (yourArgumentsGoHere) {
 // doWhatever you want to apply 
}

Kevin van Zonneveld
8 Oct '09

@ Roland Hentschel: Our examples are also used for unit testing. Hence the strangeness.
Please refer to the official PHP documentation for more details on how to operate these functions.

Roland Hentschel
2 Oct '09

Hi!

Well, the function void() does not really show, how the whole thing works. Couldn't you provide a sample call with a function,
that would help me understanding better?

thanx ( -: roland :- )

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