RE: Re: Expand variable in comparison

[Andrés Robinet <agrobinet@xxxxxxxxxxxxx>]

> -----Original Message-----
> From: news [mailto:news@xxxxxxxxxxxxx] On Behalf Of Marcus
> Sent: Friday, January 18, 2008 9:56 PM
> To: php-general@xxxxxxxxxxxxx
> Subject:  Re: Expand variable in comparison
> 
> Andrés Robinet wrote:
> >> -----Original Message-----
> >> From: news [mailto:news@xxxxxxxxxxxxx] On Behalf Of Marcus
> >> Sent: Friday, January 18, 2008 4:51 PM
> >> To: php-general@xxxxxxxxxxxxx
> >> Subject:  Expand variable in comparison
> >>
> >> Hi!
> >>
> >>
> >> Is there any way to get the following snippet returning a true?
> >>
> >>
> >> ...
> >> $this->var = ?????
> >> if ($this->var == $preDefinedStringToTestWith)
> >>      return true;
> >> else
> >>      false;
> >>
> >>
> >>
> >> The problem:
> >> I don't know, what $preDefinedStringToTestWith is!
> >> $this->var can be set to any string.
> >>
> >> I tried
> >> $this->var = "${preDefinedStringToTestWith}"
> >> but this doesn't get expanded.
> >>
> >
> > Uh! Shouldn't it work?
> >
> > $this->var = $preDefinedStringToTestWith
> 
> For certain reason $this->var can only be set to a string and not to a
> variable!
> 
> Any suggestions?

I don't understand what you are trying to do, but maybe you are trying to
achieve something like:

<?php
class Test {
	var $var = '';
	function Test() {
		$this->var = "theVariableName"; // Hold variable name
		$theVariableName = "whatever you want";
		if (${$this->var} == $theVariableName)
		      echo ${$this->var}." is equal to ".$theVariableName;
		else
		      echo "bad dog! stop it!";
	}
}

new Test();
?>



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