excel error...is a php4 problem?

Hi Max and Bob
i bacup my form in excle but there is an error. In the excel file there is:
"<b>Fatal error</b>: Call to undefined function: iconv() in <b>/web/htdocs/www.tidonvalley.com/home/administrator/components/com_chronocontact/excelwriter/Writer/Worksheet.php</b> on line <b>1547</b><br />"

I don't know why...The only thing i suppose is because my server use PHP4 (and not PHP5): in effect when i backup my form on my PC (i soften run my site locally using xampp witch has PHP5) everything is ok.
Do you confirm these?

Regrards
Mauro

Hi supermambanero,

iconv() should be OK for PHP 4.05 and later.

Bob

Thank you Bob!

Hi Bob
my server switches on PHP5 and everithing works fine!
Thanks
Regards
Mauro