mysqli_driver::$report_mode
mysqli_report
(PHP 5, PHP 7)
mysqli_driver::$report_mode -- mysqli_report — Sets mysqli error reporting mode
说明
面向对象风格
过程化风格
Depending on the flags, it sets mysqli error reporting mode to exception, warning or none.
When set to MYSQLI_REPORT_ALL
or MYSQLI_REPORT_INDEX
it will also inform about queries that don't use an index (or use a bad index).
The default setting is MYSQLI_REPORT_OFF
.
参数
-
flags
-
Supported flags Name Description MYSQLI_REPORT_OFF
Turns reporting off (the default) 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
Returns true
.
范例
示例 #1 面向对象风格
<?php
/* activate reporting */
$driver = new mysqli_driver();
$driver->report_mode = MYSQLI_REPORT_ALL;
try {
/* if the connection fails, a mysqli_sql_exception will be thrown */
$mysqli = new mysqli("localhost", "my_user", "my_password", "my_db");
/* this query should report an error */
$result = $mysqli->query("SELECT Name FROM Nonexistingtable WHERE population > 50000");
/* this query should report a bad index if the column population doesn't have an index */
$result = $mysqli->query("SELECT Name FROM City WHERE population > 50000");
} catch (mysqli_sql_exception $e) {
error_log($e->__toString());
}
示例 #2 过程化风格
<?php
/* activate reporting */
mysqli_report(MYSQLI_REPORT_ALL);
try {
$link = mysqli_connect("localhost", "my_user", "my_password", "my_db");
/* this query should report an error */
$result = mysqli_query($link, "SELECT Name FROM Nonexistingtable WHERE population > 50000");
/* this query should report a bad index if the column population doesn't have an index */
$result = mysqli_query($link, "SELECT Name FROM City WHERE population > 50000");
} catch (mysqli_sql_exception $e) {
error_log($e->__toString());
}
示例 #3 Error reporting except bad index errors
<?php
/* activate reporting */
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
try {
/* if the connection fails, a mysqli_sql_exception will be thrown */
$mysqli = new mysqli("localhost", "my_user", "my_password", "my_db");
/* this query should report an error */
$result = $mysqli->query("SELECT Name FROM Nonexistingtable WHERE population > 50000");
/* this WILL NOT report any errors even if index is not available */
$result = $mysqli->query("SELECT Name FROM City WHERE population > 50000");
} catch (mysqli_sql_exception $e) {
error_log($e->__toString());
}
参见
- 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