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
表 1. 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
例 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();
?>
|
|