(PHP 5)
mysqli_driver::$report_mode -- mysqli_report — Enables or disables internal report functions
Object oriented style
Procedural style
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).
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) | 
   Returns TRUE on success or FALSE on failure.
  
| Version | Description | 
|---|---|
| 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. | 
Example #1 Object oriented style
<?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 Procedural style
<?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);
?>