PHP mysqli warning_count() Function

Example - Object Oriented style

Return the number of warnings from the last query:

<?php
$mysqli = new mysqli("localhost","my_user","my_password","my_db");

// Check connection
if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
}

$mysqli -> query("CREATE TABLE myPersons LIKE Persons");

$sql = "INSERT INTO myPersons (FirstName) VALUES(
'Hdghfhjgjtjyjn.,,��l�jkghfjbmbngfgffdhfhjgjgkjhlkhlkjljljlkjkljlkjkljkljlkj')";

$mysqli -> query($sql);

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();
}
}

$mysqli -> close();
?>

Look at example of procedural style at the bottom.

Definition and Usage

The warning_count / mysqli_warning_count() function returns the number of warnings from the last query.

Syntax

Object oriented style:

$mysqli -> warning_count

Procedural style:

mysqli_warning_count(connection)

Parameter Values

Parameter	Description
connection	Required. Specifies the MySQL connection to use

Technical Details

Return Value:	The number of warnings from the last query. 0 if no warnings
PHP Version:	5+

Example - Procedural style

Return the number of warnings from the last query:

<?php
$con = mysqli_connect("localhost","my_user","my_password","my_db");

if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit();
}

mysqli_query($con, "CREATE TABLE myPersons LIKE Persons");

$sql = "INSERT INTO myPersons (FirstName) VALUES(
'Hdghfhjgjtjyjn.,,��l�jkghfjbmbngfgffdhfhjgjgkjhlkhlkjljljlkjkljlkjkljkljlkj')";

mysqli_query($con, $sql);

if (mysqli_warning_count($con)) {
if ($result = mysqli_query($con, "SHOW WARNINGS")) {
    $row = mysql_fetch_row($result);
    printf("%s (%d): %s\n", $row[0], $row[1], $row[2]);
    mysqli_free_result($result);
}
}

mysqli_close($con);
?>

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