mysqli_report
(PHP 5)
mysqli_report — Enables or disables internal report functions
说明
bool mysqli_report
( int $flags
)
mysqli_report() is a powerful function to improve your queries and code during development and testing phase. Depending on the flags it reports errors from mysqli function calls or queries which don't use an index (or use a bad index).
参数
- flags
-
Supported flags Name Description MYSQLI_REPORT_OFF Turns reporting off MYSQLI_REPORT_ERROR Report errors from mysqli function calls MYSQLI_REPORT_STRICT Report warnings from mysqli function calls MYSQLI_REPORT_INDEX Report if no index or bad index was used in a query MYSQLI_REPORT_ALL Set all options (report all)
返回值
如果成功则返回 TRUE，失败则返回 FALSE。
范例
Example#1 Object oriented style
<?php
/* activate reporting */
mysqli_report(MYSQLI_REPORT_ALL);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* this query should report an error */
$result = $mysqli->query("SELECT Name FROM Nonexistingtable WHERE population > 50000");
/* this query should report a warning */
$result = $mysqli->query("SELECT Name FROM City WHERE population > 50000");
$result->close();
$mysqli->close();
?>
