PHP mysqli affected_rows Funksie
Voorbeeld - Objekgeoriënteerde styl
Wys die aantal geaffekteerde rye vanaf verskillende navrae:
<?php
$mysqli = new mysqli("localhost","my_user","my_password","my_db");
if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
}
// Perform queries and print out affected rows
$mysqli -> query("SELECT * FROM Persons");
echo "Affected rows: " .
$mysqli -> affected_rows;
$mysqli -> query("DELETE FROM Persons WHERE Age>32");
echo "Affected rows: " .
$mysqli -> affected_rows;
$mysqli -> close();
?>
Kyk na voorbeeld van prosedurele styl onderaan.
Definisie en gebruik
Die affected_rows / mysqli_affected_rows()-funksie gee die aantal geaffekteerde rye in die vorige SELECT-, INSERT-, UPDATE-, REPLACE- of DELETE-navraag terug.
Sintaksis
Objekgeoriënteerde styl:
$mysqli -> affected_rows
Prosedure styl:
mysqli_affected_rows(connection)
Parameterwaardes
Parameter | Description |
---|---|
connection | Required. Specifies the MySQL connection to use |
Tegniese besonderhede
Terugkeerwaarde: | Die aantal rye wat geraak word. -1 dui aan dat die navraag 'n fout teruggestuur het |
---|---|
PHP weergawe: | 5+ |
Voorbeeld - Prosedurele styl
Wys die aantal geaffekteerde rye vanaf verskillende navrae:
<?php
$con = mysqli_connect("localhost","my_user","my_password","my_db");
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit();
}
// Perform queries and print out affected rows
mysqli_query($con, "SELECT * FROM Persons");
echo "Affected rows: " . mysqli_affected_rows($con);
mysqli_query($con, "DELETE FROM Persons WHERE Age>32");
echo "Affected rows: " . mysqli_affected_rows($con);
mysqli_close($con);
?>
❮ PHP MySQLi-verwysing