mysqli_stmt::$error()

(PHP 5, PHP 7)

Returns a string description for last statement error

说明

面向对象风格
string $mysqli_stmt->error;

过程化风格
mysqli_stmt_error(mysqli_stmt$stmt): string

Returns a string containing the error message for the most recently invoked statement function that can succeed or fail.

参数

$stmt

仅以过程化样式：由mysqli_stmt_init()返回的 statement 标识。

返回值

A string that describes the error. An empty string if no error occurred.

范例

Example #1 面向对象风格

<?php
/* Open a connection */
$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 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)) {
    /* drop table */
    $mysqli->query("DROP TABLE myCountry");
    /* execute query */
    $stmt->execute();
    printf("Error: %s.\n", $stmt->error);
    /* close statement */
    $stmt->close();
}
/* close connection */
$mysqli->close();
?>

Example #2 过程化风格

<?php
/* Open a connection */
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}
mysqli_query($link, "CREATE TABLE 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, $query)) {
    /* drop table */
    mysqli_query($link, "DROP TABLE myCountry");
    /* execute query */
    mysqli_stmt_execute($stmt);
    printf("Error: %s.\n", mysqli_stmt_error($stmt));
    /* close statement */
    mysqli_stmt_close($stmt);
}
/* close connection */
mysqli_close($link);
?>

以上例程会输出：

Error: Table 'world.myCountry' doesn't exist.

参见

• mysqli_stmt_errno() Returns the error code for the most recent statement call
• mysqli_stmt_sqlstate() Returns SQLSTATE error from previous statement operation