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

php.js offers community built php functions in javascript

---
layout: page
title: "JavaScript strrchr function"
comments: true
sharing: true
footer: true
alias:
- /functions/view/strrchr:546
- /functions/view/strrchr
- /functions/view/546
- /functions/strrchr:546
- /functions/546
---
<!-- Generated by Rakefile:build -->
A JavaScript equivalent of PHP's strrchr

{% codeblock strings/strrchr.js lang:js https://raw.github.com/kvz/phpjs/master/functions/strings/strrchr.js raw on github %}
function strrchr (haystack, needle) {
  // From: http://phpjs.org/functions
  // +   original by: Brett Zamir (http://brett-zamir.me)
  // +   input by: Jason Wong (http://carrot.org/)
  // +   bugfixed by: Brett Zamir (http://brett-zamir.me)
  // *     example 1: strrchr("Line 1\nLine 2\nLine 3", 10).substr(1)
  // *     returns 1: 'Line 3'
  var pos = 0;

  if (typeof needle !== 'string') {
    needle = String.fromCharCode(parseInt(needle, 10));
  }
  needle = needle.charAt(0);
  pos = haystack.lastIndexOf(needle);
  if (pos === -1) {
    return false;
  }

  return haystack.substr(pos);
}
{% endcodeblock %}

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

### Example 1
This code
{% codeblock lang:js example %}
strrchr("Line 1\nLine 2\nLine 3", 10).substr(1)
{% endcodeblock %}

Should return
{% codeblock lang:js returns %}
'Line 3'
{% endcodeblock %}


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