phpjs/_octopress/source/functions/array_combine/index.markdown

php.js offers community built php functions in javascript

---
layout: page
title: "JavaScript array_combine function"
comments: true
sharing: true
footer: true
alias:
- /functions/view/array_combine:307
- /functions/view/array_combine
- /functions/view/307
- /functions/array_combine:307
- /functions/307
---
<!-- Generated by Rakefile:build -->
A JavaScript equivalent of PHP's array_combine

{% codeblock array/array_combine.js lang:js https://raw.github.com/kvz/phpjs/master/functions/array/array_combine.js raw on github %}
function array_combine (keys, values) {
  // From: http://phpjs.org/functions
  // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +   improved by: Brett Zamir (http://brett-zamir.me)
  // *     example 1: array_combine([0,1,2], ['kevin','van','zonneveld']);
  // *     returns 1: {0: 'kevin', 1: 'van', 2: 'zonneveld'}
  var new_array = {},
    keycount = keys && keys.length,
    i = 0;

  // input sanitation
  if (typeof keys !== 'object' || typeof values !== 'object' || // Only accept arrays or array-like objects
  typeof keycount !== 'number' || typeof values.length !== 'number' || !keycount) { // Require arrays to have a count
    return false;
  }

  // number of elements does not match
  if (keycount != values.length) {
    return false;
  }

  for (i = 0; i < keycount; i++) {
    new_array[keys[i]] = values[i];
  }

  return new_array;
}
{% endcodeblock %}

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

### Example 1
This code
{% codeblock lang:js example %}
array_combine([0,1,2], ['kevin','van','zonneveld']);
{% endcodeblock %}

Should return
{% codeblock lang:js returns %}
{0: 'kevin', 1: 'van', 2: 'zonneveld'}
{% endcodeblock %}


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