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update and arrays

Posted on 2013-05-22
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Last Modified: 2013-05-23
code:
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record_set('artGalNames',"SELECT * FROM art_gallery WHERE artgal_Name = $_POST[name]");
      
      //update the order
      if ($_POST) {
            mysql_query("UPDATE art_gallery SET
                  artgal_Name= '".$_POST[name]."',
                  WHERE artgal_Name = ".$_POST[name]."
            ");

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The code below is being used to update the name of an artist in a database called art_gallery
A form posts the artist's name (name) which is used to select an array from art_gallery where all the names = name (the artist's name is represented multiple times)

I need to be able to introduce a loop  which will update ALL the records where the artgal_Name = name
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Question by:doctorbill
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LVL 20

Expert Comment

by:Mark Brady
ID: 39188518
Two things

1: What is record_set() ? Not sure what that is trying to do.
2: Your query logic doesn't make sense.

You are trying to update a field with the value that is already in that field.

If there is a record in the table and the artgal_Name for that record is 'John Smith'

Your query is going to try to update that record to 'John Smith'

Perhaps if you can post a database schema so I can see how it is built then supply a bit more information as to what the form actually does.

Then I can certainly help you with the code.

Cheers
0
 

Author Comment

by:doctorbill
ID: 39188545
Can you give me an example of updating multiple records in a database :
for example, the database has a variable number of entries with the name "test

I want to be able to update all entries with the name "test" to "test1"

I am ok with database connections and showing records - it is just the looping part I am having a problem with
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LVL 20

Assisted Solution

by:Mark Brady
Mark Brady earned 2000 total points
ID: 39188570
UPDATE `tablename` SET `column` = 'test1' WHERE `column` = 'test';


That query is not a loop but it will update ALL records where the value is 'test'

`tablename` and `column` need to be renamed with your table name and the column name you are using.
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Author Comment

by:doctorbill
ID: 39188643
How is this put in between php tags on a php page?

<?php


?>
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Accepted Solution

by:
Mark Brady earned 2000 total points
ID: 39188658
<?php

$sql = "UPDATE `tablename` SET `column` = 'test1' WHERE `column` = 'test'";

$result = mysql_query($sql);

if (!$result) {
    die(mysql_error());
}

?>

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Author Closing Comment

by:doctorbill
ID: 39191535
solved
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