如何提高执行效率
<br />
for($i=0; $i<count($r); $i++)<br />
{<br />
$var = explode(" ,",$r[$i]);<br />
$barcode = $var[0];<br />
$num = $var[1];<br />
$sql = "insert into `".$t."`(barcode,num) values('".$barcode."','".$num."')";<br />
echo $sql.'<br />';<br />
mysql_query($sql);<br />
}<br />
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