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Date: Thu, 30 Jun 2011 00:25:06 +0200
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To: Pascal COURTOIS <Pascal.Courtois@nouvo.com>, 
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Subject: Re: [PHP-DEV] unexpected modification of a variable
From: keisial@gmail.com ("=?UTF-8?B?w4FuZ2VsIEdvbnrDoWxleg==?=")

Pascal COURTOIS wrote:
> Hi,
>
> Is there any way that a variable can be changed within a function without passing it by reference ?
>
> I have a code like that:
>
> function myfunction($var)
> {
>
>    <some code>
>    print_r($var); =>  prints $var which is an object
>    anotherfunction($var);  // call by value
>    print_r($var); =>  $var has changed
>
> }
>
>
> I thought that since there's no reference in any way to the variable it cannot be changed in the function. Am I wrong ?
Maybe the prototype of anotherfunction() receives it by reference.
Another option would be that <some code> sets some global as a reference 
to $var, and $var is changed through it.

If you have such problem, you should provide a test case. But it's 
probably a bug in your code that will get solved when piecing it.