# maxdb_error

# maxdb::error

(PECL maxdb >= 1.0)

maxdb_error -- maxdb::error — Returns a string description of the last error

### 说明

过程化风格

maxdb_error ( resource `$link` ) : string

面向对象风格

string $maxdb->error;

The maxdb_error() function is identical to the corresponding maxdb_errno() function in every way, except instead of returning an integer error code the maxdb_error() function will return a string representation of the last error to occur for the database connection represented by the `link` parameter. If no error has occurred, this function will return an empty string.

### 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
    $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");

    /* check connection */
    if (maxdb_connect_errno()) {
       printf("Connect failed: %s\n", maxdb_connect_error());
       exit();
    }

    if (!$maxdb->query("SELECT xxx FROM hotel.city")) {
       printf("Errormessage: %s\n", $maxdb->error);
    }

    /* close connection */
    $maxdb->close();
    ?>

Example #2 过程化风格

    <?php
    $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");

    /* check connection */
    if (maxdb_connect_errno()) {
       printf("Connect failed: %s\n", maxdb_connect_error());
       exit();
    }

    if (!maxdb_query($link, "SELECT xxx FROM hotel.city")) {
       printf("Errormessgae: %s\n", maxdb_error($link));
    }

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

以上例程的输出类似于：

    PHP Warning:  maxdb_query(): -4005 POS(8) Unknown column name:XXX [42000]
    Errormessgae: POS(8) Unknown column name:XXX

### 参见

- maxdb_connect_errno() - Returns the error code from last connect call
- maxdb_connect_error() - Returns a string description of the last connect error
- maxdb_errno() - Returns the error code for the most recent function call
- maxdb_sqlstate() - Returns the SQLSTATE error from previous MaxDB operation