我有以下函数,该函数同时使用for和while循环来执行准备好的语句。但是它作为Commands out of sync; you can't run this command now抛出了错误public function queryProductDetail() {
$product_info->execute();
$
我想计算行数并打印php echo。但是当我回显查询时,它显示: Resource id #5,但它必须只显示数字5。$query="select count(name) from selection where salary>2000 and job='teacher' ";
$key=mysql_query
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id | display_name2 | guest 我正在尝试连接2个表查询,这是我的php代码: $result = mysql_query("SELECT * FROM database1.comment INNER JOIN database2.users ON database1.comment.owner_id=database2.users.id order by database1.comment.id DES