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    mysql_field_type

    (PHP 4, PHP 5)

    mysql_field_type — Get the type of the specified field in a result

    Uyarı

    Bu eklentinin kullanımı PHP 5.5.0 itibariyle önerilmemekte olup PHP 7.0.0'da kaldırılmıştır. Bu eklentinin yerine ya mysqli ya da PDO_MySQL eklentisi kullanılmalıdır. MySQL API seçerken MySQL API'ye Bakış belgesi yardımcı olabilir. Bu işlevin yerine kullanılabilecekler:

    Açıklama

    mysql_field_type(resource $result, int $field_offset): string

    mysql_field_type() is similar to the mysql_field_name() function. The arguments are identical, but the field type is returned instead.

    Bağımsız Değişkenler

    sonuç

    resource türünde sorgu sonucu. Bu sonuç bir mysql_query() çağrısının sonucudur.

    alan_konumu

    Alanın sayısal konumu. 0'dan başlar. Eğer bir alan konumu yoksa E_WARNING seviyesinde bir hata üretilir.

    Dönen Değerler

    The returned field type will be one of "int", "real", "string", "blob", and others as detailed in the » MySQL documentation.

    Örnekler

    Örnek 1 mysql_field_type() example

    <?php
    mysql_connect    ("localhost", "mysql_username", "mysql_password");
    mysql_select_db("mysql");
    $result = mysql_query("SELECT * FROM func");
    $fields = mysql_num_fields($result);
    $rows = mysql_num_rows($result);
    $table = mysql_field_table($result, 0);
    echo     "Your '" . $table . "' table has " . $fields . " fields and " . $rows . " record(s)\n";
    echo     "The table has the following fields:\n";
    for (    $i=0; $i < $fields; $i++) {
    $type = mysql_field_type($result, $i);
    $name = mysql_field_name($result, $i);
    $len = mysql_field_len($result, $i);
    $flags = mysql_field_flags($result, $i);
    echo     $type . " " . $name . " " . $len . " " . $flags . "\n";
    }
    mysql_free_result($result);
    mysql_close();
    ?>

    Yukarıdaki örnek şuna benzer bir çıktı üretir:

    Your 'func' table has 4 fields and 1 record(s)
The table has the following fields:
string name 64 not_null primary_key binary
int ret 1 not_null
string dl 128 not_null
string type 9 not_null enum

    Notlar

    Bilginize:

    Geriye uyumluluk adına, kullanımı önerilmese de şu takma ad kullanılabilir: mysql_fieldtype()

    Ayrıca Bakınız

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    User Contributed Notes 6 notes

    up
    3
    swalif_mesa at hotmail dot com
    21 years ago
    Hmm for the previous comment, note that SHOW FIELDS is an alias of SHOW COLUMNS. Very useful if you need to search the mysql-documentation. Here is the link anyway...
    http://www.mysql.com/doc/en/SHOW_DATABASE_INFO.html
    up
    2
    fusionstream at gmail dot com
    18 years ago
    krang at krang dot org dot uk
    Condensed version of what KRANG said.

    To get info on the MYSQL field type, use this code

    <?
    $result = mysql_query("SHOW FIELDS FROM db_name");

    $i = 1;
    while ($row = mysql_fetch_array($result)) { //go through one field at a time
    echo "Field $i: ";
    print_r($row) //display all information about A field which can be accessed thru the "$row" array.
    $i++;
    }
    ?>

    Will display something like:
    Field 1: Array ( [Field] => SN [Type] => mediumint(8) unsigned [Null] => [Key] => PRI [Default] => [Extra] => auto_increment ) , SN, mediumint(8) unsigned
    Field 2: Array ( [Field] => ENTITY_ID [Type] => varchar(20) [Null] => [Key] => [Default] => [Extra] => ) , ENTITY_ID, varchar(20)
    up
    0
    c dot futterlieb at bluewin dot ch
    17 years ago
    Additional to the note below:
    If you're using the "SHOW FIELDS" syntax, be sure that you're adding the table name instead of the db name in the "FROM" parameter:

    <?php
    $result     = mysql_query("SHOW FIELDS FROM table");
    ?>

    Also possible:

    <?php
    $result     = mysql_query("SHOW FIELDS FROM table.db");
    ?>

    or this:

    <?php
    $result     = mysql_query("DESCRIBE table");
    ?>
    http://dev.mysql.com/doc/refman/5.1/en/describe.html
    up
    -1
    fred at dinkler dot com
    17 years ago
    In MySQL 4.1.x, the four TEXT types (TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT) return 'blob" as field types, not "string".
    up
    -2
    mariob at menta dot net
    21 years ago
    For version 4.3.4, types returned are:

    STRING, VAR_STRING: string
    TINY, SHORT, LONG, LONGLONG, INT24: int
    FLOAT, DOUBLE, DECIMAL: real
    TIMESTAMP: timestamp
    YEAR: year
    DATE: date
    TIME: time
    DATETIME: datetime
    TINY_BLOB, MEDIUM_BLOB, LONG_BLOB, BLOB: blob
    NULL: null
    Any other: unknown
    up
    -5
    krang at krang dot org dot uk
    22 years ago
    The field type returns what PHP classifies the data found in the field, not how it is stored in the database; use the following example to retrieve the MySQL information about the field....

    $USERNAME = '';
    $PASSWORD = '';

    $DATABASE = '';
    $TABLE_NAME = '';

    mysql_connect('localhost', $USERNAME, $PASSWORD)
    or die ("Could not connect");

    $result = mysql_query("SHOW FIELDS FROM $DATABASE.$TABLE_NAME");

    $i = 0;

    while ($row = mysql_fetch_array($result)) {
    echo $row['Field'] . ' ' . $row['Type'];
    }
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