[PHP] array_search() problem

[David Orn Johannsson]

Hi I'm runing a PHP Version 4.0.4pl1 on Solaris 8 X86 on apache, and I'm
trying to search an array




while(list($findId) = mysql_fetch_row($resultNextLast)){
    $NextLast[] = $findId;
}
$currArrayPos   = array_search($ImgId, $NextLast);


and this code results this error:
Fatal error: Call to undefined function: array_search()


Any body have any idea what could be wrong?


Thanks David