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.,,øæløjkghfjbmbngfgffdhfhjgjgkjhlkhlkjljljlkjkljlkjkljkljlkj')";
$mysqli -> query($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");
$sql
= "INSERT INTO myPersons (FirstName) VALUES(
'Hdghfhjgjtjyjn.,,øæløjkghfjbmbngfgffdhfhjgjgkjhlkhlkjljljlkjkljlkjkljkljlkj')";
mysqli_query($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);
?>
❮ PHP MySQLi Reference
