mysqli::$warning_count

mysqli_warning_count

(PHP 5, PHP 7, PHP 8)

mysqli::$warning_count -- mysqli_warning_countReturns the number of warnings from the last query for the given link

Description

Object-oriented style

Procedural style

mysqli_warning_count(mysqli $mysql): 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

mysql

Procedural style only: A mysqli object 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