$this->delimiter in php explode

From	j <mung_me@att.net>
Newsgroups	comp.lang.php
Subject	$this->delimiter in php explode
Date	2012-04-16 21:45 -0400
Organization	albasani.net
Message-ID	<jmihvb$cna$1@news.albasani.net> (permalink)

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   I've written a function in a class

public $delimiter = ';';

...

public function some_function(){
	echo $this->delimiter; // yields: ;
	$SOME_ARRAY= explode($this->delimiter,$some_string);

	echo $this->delimiter // yields: 1

So,  running explode changes the value of the class variable $delimiter. 
It's obvious I'm stepping on something, but I'm not sure what other than 
there is a delimiter in explode. What does $this mean inside the explode 
function?

  Jeff

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$this->delimiter in php explode j <mung_me@att.net> - 2012-04-16 21:45 -0400
  Re: $this->delimiter in php explode Jerry Stuckle <jstucklex@attglobal.net> - 2012-04-16 22:08 -0400
  Re: $this->delimiter in php explode "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-04-17 09:26 +0200

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