# mysqli_stmt::$error

# mysqli_stmt_error

(PHP 5, PHP 7, PHP 8)

mysqli_stmt::$error -- mysqli_stmt_error — 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 `$statement`): string

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

### 参数

`statement`

  仅以过程化样式：由 mysqli_stmt_init() 返回的 mysqli_stmt 对象。

### 返回值

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

### 示例

示例 #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();
?>`

示例 #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);
?>`

以上示例会输出：

    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

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