PHP 5.4.36 Released

mysql_field_seek

(PHP 4, PHP 5)

mysql_field_seek Imposta il puntatore al risultato ad un determinato indice di campo

Descrizione

int mysql_field_seek ( resource $risultato , int $indice_campo )

Esegue il seek ad uno specifico indice di campo. Se la successiva chiamata a mysql_fetch_field() non include un indice di campo, quello specificato in mysql_field_seek() viene restituito.

Vedere anche: mysql_fetch_field().

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User Contributed Notes 4 notes

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adrien dot gibrat at gmail dot com
6 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.
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chris at igwsolutions dot com
6 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>";
?>
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poulpillusion at free dot fr
7 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)
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-3
Hassan Kazem
6 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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