PHP Dokumentation: Mysqli warning-count
12. Januar 2010 von werner
mysqli::warning_count
mysqli_warning_count
(PHP 5)
mysqli::warning_count — mysqli_warning_count — Returns the number of warnings from the last query for the given link
Beschreibung
Object oriented style (property):
int $warning_count;
Procedural style:
Returns the number of warnings from the last query in the connection.
Hinweis: For retrieving warning messages you can use the SQL command SHOW WARNINGS [limit row_count].
Parameter-Liste
- link
Nur bei prozeduralem Aufruf: Ein vonmysqli_connect() oder mysqli_init()zurückgegebenes Verbindungsobjekt.
Rückgabewerte
Number of warnings or zero if there are no warnings.
Beispiele
Beispiel #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();
?>Beispiel #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);
?>Das oben gezeigte Beispiel erzeugt folgendeAusgabe:
Warning (1264): Data truncated for column 'Name' at row 1
Siehe auch
- 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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