- mb_strstr: documentation ( source)
<?php
$str = array();
$str_n = array();
$str[0] = "Shockwave Flash;Shockwave Flash 13.0 r0;NPSWF32_13_0_0_214.dll;undefined(Adobe Flash movie;application/x-shockwave-flash;swf)(FutureSplash movie;application/futuresplash;spl)";
$str_n[0] = mb_strstr($str[0],';',true);
echo $str_n[0]." ";
echo $str[0];
?>