(PHP 5, PHP 7, PHP 8)
mysqli_stmt::$errno -- mysqli_stmt_errno — Returns the error code for the most recent statement call
面向对象风格
过程化风格
Returns the error code for the most recently invoked statement function that can succeed or fail.
statement仅以过程化样式：由 mysqli_stmt_init() 返回的 mysqli_stmt 对象。
An error code value. Zero means no error occurred.
示例 #1 面向对象风格
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$mysqli->query("CREATE TABLE myCountry LIKE Country");
$mysqli->query("INSERT INTO myCountry SELECT * FROM Country");
$query = "SELECT Name, Code FROM myCountry ORDER BY Name";
if ($stmt = $mysqli->prepare($query)) {
$mysqli->query("DROP TABLE myCountry");
$stmt->execute();
printf("Error: %d.\n", $stmt->errno);
$stmt->close();
}
$mysqli->close();
?>示例 #2 过程化风格
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
mysqli_query($link, "CREATE TABLE myCountry LIKE Country");
mysqli_query($link, "INSERT INTO myCountry SELECT * FROM Country");
$query = "SELECT Name, Code FROM myCountry ORDER BY Name";
if ($stmt = mysqli_prepare($link, $query)) {
mysqli_query($link, "DROP TABLE myCountry");
mysqli_stmt_execute($stmt);
printf("Error: %d.\n", mysqli_stmt_errno($stmt));
mysqli_stmt_close($stmt);
}
mysqli_close($link);
?>以上示例会输出：
Error: 1146.