<div>
1) depends on you php version in 4 you get a copy in 5 it's the same object<br />
<br />
2) $ref is becoming an &quot;alias&quot; for $this-&gt;object, but again in php 4 you get a copy, in php5 it's the same object. <br />
<br />
See <a href="http://www.php.net/manual/en/migration5.oop.php" rel="ugc">http://www.php.net/manual/en/migration5.oop.php</a>&nbsp;for difference between 4 and 5 in the object model.<br />

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1) depends on you php version in 4 you get a copy in 5 it's the same object

2) $ref is becoming an "alias" for $this->object, but again in php 4 you get a copy, in php5 it's the same object.

See http://www.php.net/manual/en/migration5.oop.php [http://www.php.net/manual/en/migration5.oop.php] for difference between 4 and 5 in the object model.


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Sorry, I forgot to mention I'm using PHP 5. <br />
<br />
So does this mean these are equivalent?:<br />
<br />
&nbsp; &nbsp; &nbsp;$var1 = $this-&gt;object;<br />
&nbsp; &nbsp; &nbsp;$var1 =&amp; $this-&gt;object;<br />
<br />
And that after these statements:<br />
<br />
&nbsp; &nbsp; &nbsp;$ref =&amp; $this-&gt;object;<br />
&nbsp; &nbsp; &nbsp;$secondref = $ref;<br />
<br />
$this-&gt;object, $ref and $secondref all point the the same object?
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Sorry, I forgot to mention I'm using PHP 5.

So does this mean these are equivalent?:

     $var1 = $this->object;
     $var1 =& $this->object;

And that after these statements:

     $ref =& $this->object;
     $secondref = $ref;

$this->object, $ref and $secondref all point the the same object?

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<div class="content wysiwyg-content">
Hi,<br />
<br />
I have 2 quick questions about references in PHP, firstly, if i did the following:<br />
<br />
&nbsp; &nbsp; &nbsp;$this-&gt;object = new Object();<br />
&nbsp; &nbsp; &nbsp;$var1 = $this-&gt;object;<br />
<br />
Would $var1 contain a copy of $this-&gt;object, and hence clone it?<br />
<br />
Secondly, If I did the following:<br />
<br />
&nbsp; &nbsp; &nbsp;$ref =&amp; $this-&gt;object;<br />
&nbsp; &nbsp; &nbsp;$secondref = $ref;<br />
<br />
Does that mean $secondref is a reference to $this-&gt;object ($secondref is set to the same memory location as $ref is set to)? Or does PHP treat $ref as the same as $this-&gt;object and hence would not contain a reference to it and possibly duplicate it?<br />
<br />
Thanks for your help,<br />
<br />
Mike
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Hi,

I have 2 quick questions about references in PHP, firstly, if i did the following:

     $this->object = new Object();
     $var1 = $this->object;

Would $var1 contain a copy of $this->object, and hence clone it?

Secondly, If I did the following:

     $ref =& $this->object;
     $secondref = $ref;

Does that mean $secondref is a reference to $this->object ($secondref is set to the same memory location as $ref is set to)? Or does PHP treat $ref as the same as $this->object and hence would not contain a reference to it and possibly duplicate it?

Thanks for your help,

Mike

PHP Objects &amp; References

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.

PHP Objects &amp; References

PHP Objects & References