mysqli_driver::$report_mode()
(PHP 5, PHP 7)
Enables or disables internal report functions
说明
面向对象风格
int $mysqli_driver->report_mode;
过程化风格
mysqli_report(int $flags): bool
A function helpful in improving queries during code development and testing. Depending on the flags, it reports errors from mysqli function calls or queries that 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
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)
返回值
成功时返回TRUE
,或者在失败时返回FALSE
。
更新日志
版本 | 说明 |
---|---|
5.3.4 | Changing the reporting mode is now be per-request, rather than per-process. |
5.2.15 | Changing the reporting mode is now be per-request, rather than per-process. |
范例
Example #1 面向对象风格
<?php $mysqli = new mysqli("localhost", "my_user", "my_password", "world"); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); } /* activate reporting */ $driver = new mysqli_driver(); $driver->report_mode = MYSQLI_REPORT_ALL; try { /* 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(); } catch (mysqli_sql_exception $e) { echo $e->__toString(); } ?>
Example #2 过程化风格
<?php /* activate reporting */ mysqli_report(MYSQLI_REPORT_ALL); $link = mysqli_connect("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 */ $result = mysqli_query("SELECT Name FROM City WHERE population > 50000"); mysqli_free_result($result); mysqli_close($link); ?>
参见
- mysqli_debug() Performs debugging operations
- mysqli_dump_debug_info() 将调试信息输出到日志
- mysqli_sql_exception
set_exception_handler()
设置用户自定义的异常处理函数error_reporting()
设置应该报告何种 PHP 错误
Seems not clear but flags *could be combined*, as per other flags. For example: <?php # wannabe noticed about all errors except those about indexes $driver = new mysqli_driver(); $driver->report_mode = MYSQLI_REPORT_ALL & ~MYSQLI_REPORT_INDEX; ?>