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mysql_field_table> <mysql_field_name
[edit] Last updated: Fri, 25 May 2012

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mysql_field_seek

(PHP 4, PHP 5)

mysql_field_seek結果ポインタを指定したフィールドオフセットにセットする

説明

bool mysql_field_seek ( resource $result , int $field_offset )

指定したフィールドオフセットに移動します。 mysql_field_seek() をコールした後、 mysql_fetch_field() をフィールドオフセットを付けずに コールした場合、このフィールドが返されます。

パラメータ

result

評価された結果 リソース。 この結果は、mysql_query() のコールにより得られたものです。

field_offset

数値フィールドオフセット。 field_offset0 から始まります。 field_offset が存在しない場合、 E_WARNING レベルのエラーが発行されます。

返り値

成功した場合に TRUE を、失敗した場合に FALSE を返します。

参考

  • mysql_fetch_field() - 結果からカラム情報を取得し、オブジェクトとして返す



mysql_field_table> <mysql_field_name
[edit] Last updated: Fri, 25 May 2012
 
add a note add a note User Contributed Notes mysql_field_seek
adrien dot gibrat at gmail dot com 04-Oct-2008 07:12
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.
chris at igwsolutions dot com 25-Apr-2008 09:23
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>";
?>
Hassan Kazem 10-Jan-2008 03:34
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
poulpillusion at free dot fr 17-Apr-2007 01:44
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)

 
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