Руководство по PHP
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# mysqli_warning_count

(PHP 5)

mysqli_warning_count

(no version information, might be only in CVS)

mysqli->warning_count -- Returns the number of warnings from the last query for the given link

## Description

Procedural style:

int mysqli_warning_count ( mysqli link )

Object oriented style (property):

class mysqli {
int warning_count
}

mysqli_warning_count() returns the number of warnings from the last query in the connection represented by the `link` parameter.

> Замечание: For retrieving warning messages you can use the SQL command `SHOW WARNINGS [limit row_count]`.

## Возвращаемые значения

Number of warnings or zero if there are no warnings.

## Смотрите также

mysqli_errno(), mysqli_error() и mysqli_sqlstate().

## Примеры

Пример 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();
?>`

Пример 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);
?>`

Результат выполнения данного примера:

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

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