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mysql_fetch_array() expects parameter 1 to be resource, boolean given in selectPHP错误:mysqli_num_rows()预计参数1被mysqli_result,布尔给
我得到下面的下面的错误。 53行是if(mysqli_num_rows($r) == 1) {
。我该如何解决这个问题。
PHP error: on line 53: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given
这里是PHP MySQL代码。
$d = "UPDATE users SET del = 1, del_date = NOW() WHERE userid = '" . $_SESSION['userid'] . "'";
$r = mysqli_query ($mysqli, $d) or trigger_error("Query: $d\n<br />MySQL Error: " . mysqli_error($mysqli));
if(mysqli_num_rows($r) == 1) {