pattern containing single quote in IF statement

["Jahangir" <jahan9@xxxxxxxxx>]

I am stuck at a wierd problem. I am trying to do comparision between a
"query string" and a "string value". the string consists of some
diacriticals and single quotes.
But when i try to escape the single quotes using backshash (\) it doesnt
work. and when i try to use it inside a double quote preg_replace() doesnt
recognise the code.
why is php not comaparing string with single quotes??

here is the code:
 if($_GET['query']==new)
 { filter($query);}
 elseif($_GET['query']==some'u'all)
 { filter($query);}
 elseif($_GET['query']==all'u'ppl)
 { filter($query);}

 function filter($query)
 {
 $pattern = array ('/new/','/some'u'all/','/all'u'ppl/');
 $rep = array ("new way","Some of you all ","all of you");
 $op = preg_replace($pattern,$rep,$_GET['query']);
 echo "<br>new value $op";
}


also i wanted to just clarify is there a way of using multiple OR's in the
same "if" condition
i.e if(($_GET['query]')==new||newday||newtime||newbeginning||newthing)
{
// fn here;
}

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