Php/docs/mysqli.warning-count
mysqli::$warning_count
mysqli_warning_count
(PHP 5, PHP 7)
mysqli::$warning_count -- mysqli_warning_count — Returns the number of warnings from the last query for the given link
Description
Object oriented style
int $mysqli->warning_count;
Procedural style
mysqli_warning_count
( mysqli $link
) : int
Returns the number of warnings from the last query in the connection.
Note:
For retrieving warning messages you can use the SQL command
SHOW WARNINGS [limit row_count].
Parameters
link- Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()
Return Values
Number of warnings or zero if there are no warnings.
Examples
Example #1 $mysqli->warning_count example
Object oriented style
<?php$mysqli = new mysqli("localhost", "my_user", "my_password", "world");/* check connection */if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit();}$mysqli->query("CREATE TABLE myCity LIKE City");/* a remarkable city in Wales */$query = "INSERT INTO myCity (CountryCode, Name) VALUES('GBR', 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')";$mysqli->query($query);if ($mysqli->warning_count) { if ($result = $mysqli->query("SHOW WARNINGS")) { $row = $result->fetch_row(); printf("%s (%d): %s\n", $row[0], $row[1], $row[2]); $result->close(); }}/* close connection */$mysqli->close();?>
Procedural style
<?php$link = mysqli_connect("localhost", "my_user", "my_password", "world");/* check connection */if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit();}mysqli_query($link, "CREATE TABLE myCity LIKE City");/* a remarkable long city name in Wales */$query = "INSERT INTO myCity (CountryCode, Name) VALUES('GBR', 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')";mysqli_query($link, $query);if (mysqli_warning_count($link)) { if ($result = mysqli_query($link, "SHOW WARNINGS")) { $row = mysqli_fetch_row($result); printf("%s (%d): %s\n", $row[0], $row[1], $row[2]); mysqli_free_result($result); }}/* close connection */mysqli_close($link);?>
The above examples will output:
Warning (1264): Data truncated for column 'Name' at row 1
See Also
- mysqli_errno() - Returns the error code for the most recent function call
- mysqli_error() - Returns a string description of the last error
- mysqli_sqlstate() - Returns the SQLSTATE error from previous MySQL operation
