---
layout: page
title: "JavaScript array_walk_recursive function"
comments: true
sharing: true
footer: true
alias:
- /functions/view/array_walk_recursive:350
- /functions/view/array_walk_recursive
- /functions/view/350
- /functions/array_walk_recursive:350
- /functions/350
---
<!-- Generated by Rakefile:build -->
A JavaScript equivalent of PHP's array_walk_recursive

{% codeblock array/array_walk_recursive.js lang:js https://raw.github.com/kvz/phpjs/master/functions/array/array_walk_recursive.js raw on github %}
function array_walk_recursive (array, funcname, userdata) {
  // From: http://phpjs.org/functions
  // +   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;
}
{% endcodeblock %}

 - [Raw function on GitHub](https://github.com/kvz/phpjs/blob/master/functions/array/array_walk_recursive.js)

Please note that php.js uses JavaScript objects as substitutes for PHP arrays, they are 
the closest match to this hashtable-like data structure. 

Please also note that php.js offers community built functions and goes by the 
[McDonald's Theory](https://medium.com/what-i-learned-building/9216e1c9da7d). We'll put online 
functions that are far from perfect, in the hopes to spark better contributions. 
Do you have one? Then please just: 

 - [Edit on GitHub](https://github.com/kvz/phpjs/edit/master/functions/array/array_walk_recursive.js)

### Example 1
This code
{% codeblock lang:js example %}
array_walk_recursive ({'a': 'b', 'c': {'d': 'e'}}, 'void', 'userdata');
{% endcodeblock %}

Should return
{% codeblock lang:js returns %}
true
{% endcodeblock %}

### Example 2
This code
{% codeblock lang:js example %}
array_walk_recursive ('a', 'void', 'userdata');
{% endcodeblock %}

Should return
{% codeblock lang:js returns %}
false
{% endcodeblock %}


### Other PHP functions in the array extension
{% render_partial _includes/custom/array.html %}