//Oğuz KOÇ 
//www.oguzkoc.com.tr
//16.12.2013
$fix = "Lorem ipsum dolor sit amet consectetuer id congue pretium  
sollicitudin faucibus. Cursus eget <!--more--> Duis Suspendisse lacus felis turpis  
nonummy sollicitudin vitae sem. Consectetuer Phasellus at urna adipiscing  
Vivamus eleifend interdum sed justo gravida. Condimentum consequat Curabitur.";  
$yer= strpos($fix, "<!--more-->"); 
echo substr($fix,0,$yer);