# maxdb_warning_count

# maxdb::warning_count

(PECL maxdb >= 1.0)

maxdb_warning_count -- maxdb::warning_count — Returns the number of warnings from the last query for the given link

### 说明

过程化风格

maxdb_warning_count ( resource `$link` ) : int

面向对象风格

int $maxdb->warning_count;

maxdb_warning_count() returns the number of warnings from the last query in the connection represented by the `link` parameter.

### 返回值

Number of warnings or zero if there are no warnings.

### 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();
    }

    $maxdb->query("CREATE TABLE temp.mycity LIKE hotel.city");

    /* a remarkable city in Wales */
    $query = "INSERT INTO temp.mycity (zip, name) VALUES('11111',
           'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')";

    $maxdb->query($query);

    printf ("Number of warning: %d\n", $maxdb->warning_count);

    /* 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();
    }

    maxdb_query($link, "CREATE TABLE temp.mycity LIKE hotel.city");

    /* a remarkable long city name in Wales */
    $query = "INSERT INTO temp.mycity (zip, name) VALUES('11111',
           'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')";

    maxdb_query($link, $query);

    printf ("Number of warning: %d\n", maxdb_warning_count($link));

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

以上例程的输出类似于：

    Warning: maxdb_query(): -8004 POS(62) Constant must be compatible with column type and length <...>
    Number of warning: 0

### 参见

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