Returns SQLSTATE error from previous statement operation

# mysqli_stmt::$sqlstate

# mysqli_stmt_sqlstate

(PHP 5, PHP 7, PHP 8)

mysqli_stmt::$sqlstate -- mysqli_stmt_sqlstate — Returns SQLSTATE error from previous statement operation

### 说明

面向对象风格

string $mysqli_stmt->sqlstate;

过程化风格

function mysqli_stmt_sqlstate(mysqli_stmt `$statement`): string

Returns a string containing the SQLSTATE error code for the most recently invoked prepared statement function that can succeed or fail. The error code consists of five characters. `'00000'` means no error. The values are specified by ANSI SQL and ODBC. For a list of possible values, see » http://dev.mysql.com/doc/mysql/en/error-handling.html.

### 参数

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

### 返回值

Returns a string containing the SQLSTATE error code for the last error. The error code consists of five characters. `'00000'` means no error.

### 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->sqlstate);

        /* 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_sqlstate($stmt));

        /* close statement */
        mysqli_stmt_close($stmt);
    }

    /* close connection */
    mysqli_close($link);
    ?>

以上示例会输出：

    Error: 42S02.

### 注释

> 注意:

> Note that not all MySQL errors are yet mapped to SQLSTATE's. The value `HY000` (general error) is used for unmapped errors.

### 参见

- mysqli_stmt_errno() - Returns the error code for the most recent statement call
- mysqli_stmt_error() - Returns a string description for last statement error

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