billhance

PHP Developer Interview: What you should know

###1. What’s the difference between " self " and " this " ?

Use $this to refer to the current object. Use self to refer to the current class. In other words, use $this->member for non-static members, use self::$member for static members.

Source: When to use self vs this -stackoverflow

billhance

<?php

 if(!function_exists('if_string_contains'))
 { 
   function if_string_contains($needle,$haystack) {

      if (is_array($needle)) {
          foreach ($needle as $n) {
              if (strpos($haystack, $n) !== false) {
                  return true;

billhance

<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

class CI_Session
{

	var $flash_key = 'flash'; // prefix for "flash" variables (eg. flash:new:message)

	function __construct()
	{
		$this->_sess_run();