mysqli::warning_count

mysqli_warning_count

(PHP 5)

mysqli_warning_count — Returns the number of warnings from the last query for the given link

Description

Object oriented style (property):

mysqli

int$warning_count;

Procedural style:

int mysqli_warning_count ( mysqli $link )

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 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();

?>

Example #2 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 example will output:

Warning (1264): Data truncated for column 'Name' at row 1