Ben sql de sorun var

SQL Hatası

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '58.47 €'')' at line 1

Sql kodu:

mysql_query("INSERT INTO ponudba 
(ime_ponudbe,zaporedna_stevilka,id_podjetja,veljavnost,znesek) VALUES('$ime_ponudbe','$zaporedna_stevilka','$id_podjetja','$veljavnost,'$znesek'')");
zaporedna_stevilka -> value 1
id_podjetja -> value 2
veljavnost -> value 17.11.2010
znesek-> value is 58.47