php 批量保存数据与批量更新数据

if ($insert && $insertsql) {php 批量保存数据与批量更新数据
$keystr = $valstr = $tmp = '';
foreach($insertsql as $key => $val) {
if ($val) {
$keystr .= $tmp.$key;
$valstr .= $tmp."'".addslashes($val)."'";
$tmp = ',';
}
}
if ($keystr && $valstr) {
dbconn($dbhost,$dbuser,$dbpass,$dbname,$charset,$dbport);
m(q("INSERT INTO $tablename ($keystr) VALUES ($valstr)") ? 'Insert new record of success' : mysql_error());
}
}
if ($update && $insertsql && $base64) {
$valstr = $tmp = '';
foreach($insertsql as $key => $val) {
$valstr .= $tmp.$key."='".addslashes($val)."'";
$tmp = ',';
}
if ($valstr) {
$where = base64_decode($base64);
dbconn($dbhost,$dbuser,$dbpass,$dbname,$charset,$dbport);
m(q("UPDATE $tablename SET $valstr WHERE $where LIMIT 1") ? 'Record updating' : mysql_error());
}
}