Returns the number of warnings generated by the most recently executed query

# mysqli::$warning_count

# mysqli_warning_count

(PHP 5, PHP 7, PHP 8)

mysqli::$warning_count -- mysqli_warning_count — Returns the number of warnings generated by the most recently executed query

### Description

Object-oriented style

int $mysqli->warning_count;

Procedural style

mysqli_warning_count(mysqli `$mysql`): int

Returns the number of warnings generated by the most recently executed query.

> Note: For retrieving warning messages the following SQL command can be used: `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_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
$mysqli->query("SELECT 42/0");
if ($mysqli->warning_count > 0) {
$result = $mysqli->query("SHOW WARNINGS");
$row = $result->fetch_row();
printf("%s (%d): %s\n", $row[0], $row[1], $row[2]);
}`

Procedural style

`<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
mysqli_query($link, "SELECT 42/0");
if (mysqli_warning_count($link) > 0) {
$result = mysqli_query($link, "SHOW WARNINGS");
$row = mysqli_fetch_row($result);
printf("%s (%d): %s\n", $row[0], $row[1], $row[2]);
}`

The above examples will output:

    Warning (1365): Division by 0

### 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

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