Call to unsupported or undefined function

[glong]

I have a web page which works fine on the current web server. Now I'm trying to move it to another web server, I got an error msg:Fatal error: Call to unsupported or undefined function getqsv() in form.php on line 18

Here are some of the codes:
if($qsv==""){
$qsv=getqsv($HTTP_SERVER_VARS[HTTP_REFERER]);
if($qsv=="") $qsv=$HTTP_SERVER_VARS[QUERY_STRING];
}

function getqsv($s1){
$s1=strstr($s1,"?");
$s1=substr($s1,1);
return($s1);
}

I don't know what's wrong. Anybody can help?

Thanks.

[intenz]

Try defining the function before you use it.

[jubripley]

i pasted this code into a file on my machine and it worked without errors.

Maybe you need to post more of the file ... is it very big?