(PHP 5)
mysqli_report — Enables or disables internal report functions
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).
| Name | Description |
|---|---|
| MYSQLI_REPORT_OFF | Turns reporting off |
| MYSQLI_REPORT_ERROR | Report errors from mysqli function calls |
| MYSQLI_REPORT_STRICT | Throw mysqli_sql_exception for errors instead of warnings |
| MYSQLI_REPORT_INDEX | Report if no index or bad index was used in a query |
| MYSQLI_REPORT_ALL | Set all options (report all) |
成功时返回 TRUE， 或者在失败时返回 FALSE.
| 版本 | 说明 |
|---|---|
| 5.2.15 & 5.3.4 | Changing the reporting mode is now be per-request, rather than per-process. |
面向对象风格
<?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 bad index */
$result = $mysqli->query("SELECT Name FROM City WHERE population > 50000");
$result->close();
$mysqli->close();
?>