mysql_field_seek

    (PHP 4, PHP 5)

    mysql_field_seek — Set result pointer to a specified field offset

    Увага

    Це розширення застаріле, починаючи з PHP 5.5.0, та вилучене з PHP 7.0.0. Натомість використовуються розширення MySQLi або PDO_MySQL. Докладніше описано у керівництві MySQL: вибір API. Цю функцію можна замінити на:

    Опис

    mysql_field_seek(resource $result, int $field_offset): bool

    Seeks to the specified field offset. If the next call to mysql_fetch_field() doesn't include a field offset, the field offset specified in mysql_field_seek() will be returned.

    Параметри

    result

    Результат типу resource для опрацювання, якого повертає функція mysql_query().

    field_offset

    Числовий зсув поля. Значення field_offset починається з 0. Якщо зсуву field_offset не існує, буде виведено повідомлення рівня E_WARNING.

    Значення, що повертаються

    Повертає true у разі успіху або false в разі помилки.

    Прогляньте також

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    User Contributed Notes 4 notes

    up
    1
    adrien dot gibrat at gmail dot com
    16 years ago
    Not dumb at all!!

    It means that "mysql_field_seek" and "mysql_data_seek" are moving the same cursor... through the rows and columns of the result resource.

    Also means that the cursor goes to a new row when it reach a final field(aka column), by exemple while looping with "mysql_fetch_field".

    Calling "mysql_fetch_object", "mysql_fetch_array", "mysql_fetch_assoc"
    and "mysql_fetch_row" seems to place the cursor at the end of the line.

    So calling "mysql_fetch_field" without a field index, just after that, will return false.
    up
    -1
    chris at igwsolutions dot com
    16 years ago
    I spent a good deal of time trying to get the example to work, but the example does not work.
    To do what the exaple is trying to do, you would need to use mysql_data_seek

    assume we have table named testing which contains
    id name
    1 Hassan
    2 Jack
    3 Rose
    ---------------

    Here is an expample that will do the above example.

    Since I am more comfortable in a OOP setting, I used mysql_fetch_object

    <?php
    require("myConnenctionFile.php");

    $sql="SELECT * from testing";
    $result=mysql_query($sql);

    $row = mysql_fetch_object($result);
    echo     $row->id . ' ' . $row->name; // Output is (1 Hassan)
    mysql_data_seek($result,2);
    $row = mysql_fetch_object($result);
    echo     $row->id . ' ' . $row->name; // Output is (3 Rose)
    echo "<BR><BR>";
    ?>
    up
    -1
    poulpillusion at free dot fr
    17 years ago
    A dumb comment... but it may save people some time :
    mysql_field_seek != mysql_data_seek

    In order to fetch again the results of a resource result from the beginning, you will use mysql_data_seek(id, 0)
    up
    -3
    Hassan Kazem
    16 years ago
    an example of this function
    assume we have table1 which contains
    ID Name
    1 Hassan
    2 Jack
    3 Rose
    ---------------
    <?php
    mysql_connect    ("sql.server.com", "username", "password") or die(mysql_error());
    mysql_select_db("database") or die(mysql_error());
    $sql="SELECT * from table1";
    $result=mysql_query($sql);
    $row = mysql_fetch_array($result);
    echo     $row['ID'] . ' ' . $row['Name']; // Output is (1 Hassan)
    mysql_field_seek($result,2);
    echo     $row['ID'] . ' ' . $row['Name']; // Output is (3 Rose)
    ?>
    ---------------
    // You can see that the seek command forwarded the pointer one step and skipped row number 2
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