mysqli::$warning_count
PHP function
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Returns the number of warnings generated by the most recently executed query
Description
Oop
intmysqli->warning_count
Procedural
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
Return Values
Number of warnings or zero if there are no warnings.
Examples
$mysqli->warning_count example
Oop
php
<?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
php
<?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]);
}Outputs
output
Warning (1365): Division by 0