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List:       php-windows
Subject:    RE: [PHP-WIN] Flow of PHP testClass
From:       "Jim MacDiarmid" <jim.macdiarmid () comcast ! net>
Date:       2012-03-29 23:08:30
Message-ID: 002e01cd0e00$db5593e0$9200bba0$ () comcast ! net
[Download RAW message or body]

Yes, I believe your understanding is correct... This is my understanding as well.  

In line 1 below,  you are creating a new object and using the class constructor to \
initialize $a and $b. In line 2 below, you are creating a new object, with $a and \
$b's  default values. In line 3 below, $a and $b are printed with the values passed \
through the class constructor in line 1. In line 4 below, $a and $b are printed with \
default values since nothing was passed through the class constructor.

1 .  $inst1 = new TestClass(3,50);
2 . $inst2 = new TestClass();
3.  $inst1- ­->printAB();
4.  $inst2- ­->printAB();

-----Original Message-----
From: Rikin Parekh [mailto:rikin08@gmail.com] 
Sent: Thursday, March 29, 2012 10:57 AM
To: PHP DB; php-windows@lists.php.net; phpexperts-subscribe@yahoogroups.com
Subject: [PHP-WIN] Flow of PHP testClass

Hi Guys,

Given below is a PHP script. Can someone help me with the output of the code. \
According to my understanding the output should be 3, 50, 20, 10. Can someone \
elaborate on the same and provide me an explanation on the flow?

Thanks a lot in advance.

<?php
class TestClass {
var $a =20;
var $b =10;
function TestClass($a= null, $b=null) {
 if (!is_null($a))
 {
   $this- ­->a= $a;
 }
if(!is_null($b))
 {
 $this- ­->b=$b;
 }
}

function printAB() {
echo $this- ­->a." ".$this- ­->b."\n";
 }
}

$inst1 = new TestClass(3,50);
$inst2 = new TestClass();
$inst1- ­->printAB();
$inst2- ­->printAB();
?>


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