MySQLi查询失败，但在SQL shell中成功失败

Question

我试图从我的OsTicket安装中拉出一些数据，但由于某种原因，第一个SQL查询无提示失败（行首：$openTickets）。但是，查询在输入到MySQL shell时起作用。

<?php 
    define('INCLUDE_DIR','dumb hack'); 
    require_once("./include/ost-config.php"); 

    $mysqli = new mysqli(DBHOST, DBUSER, DBPASS, DBNAME); 
if ($mysqli->connect_error) { 
    die("Couldn't Connect to MySQL Database.\nError (" . $mysqli->connect_errno . "): " . $mysqli->connect_error); 
} 

$openTickets = $mysqli->query("SELECT ticket_id, number, user_id FROM ost_ticket WHERE status='open'"); 

[...snip...] 
?> 

Answer 1

见MySQLI errno

$openTickets = $mysqli->query("SELECT ticket_id, number, user_id FROM ost_ticket WHERE status='open'"); 
if ($openTickets === false) { 
    printf("Errorcode: %d\n", $mysqli->errno); 
}