mysqli_driver::$report_mode

mysqli_report

(PHP 5, PHP 7, PHP 8)

mysqli_driver::$report_mode -- mysqli_reportSets mysqli error reporting mode

说明

面向对象风格

过程化风格

mysqli_report ( int $flags ) : bool

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

Example #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());
}

Example #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());
}

Example #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

User Contributed Notes

welfordmartin at gmail dot com 09-Sep-2020 03:26
As a recommendaton on memory management please don't use the objective way your creating an object to specify one property and thats all your doing with it, much more effective both for the parser and for memory to use the proccedual style for setting the report flag.
nineoclick (atsymbol) gmail (dot) com 16-Jun-2017 10:42
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;

?>