PHP递归算法实现99乘法表
<?php
function _99($n){
for($i=1;$i<=$n;$i++){
echo "$i*$n=".($i*$n)." ";
}
echo '<br>';
$n++;
if($n<10)_99($n);
}
_99(1);
?> 
SQL语句执行错误：SELECT * FROM emlog_sort where pid= ORDER BY sid ASC, taxis asc
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 'ORDER BY sid ASC, taxis asc' at line 1