Re: One database, different forms
| From: | Ethan Schroeder | Date: | Mon, 14 May 2001 16:22:50 +0000 |
| Subject: | Re: One database, different forms | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-52700@lists.php.net to get a copy of this message | ||
Oh, here is the update code, which uses the same concepts:
$column = mysql_list_fields("$db","$table");
for($i = 1; $i < mysql_num_fields($column); $i++)
{
$value = mysql_field_name($column,$i);
$name = $value;
$value = $$value;
$values .= "$name='$value'";
if($i != mysql_num_fields($column)-1)
$values .= ",";
}
$sql = "UPDATE $table SET $values WHERE id='$id'";
mysql_query($sql);
And the INSERT code again for good measure:
$column = mysql_list_fields("$db","$table");
for($i = 0; $i < mysql_num_fields($column); $i++)
{
$value = mysql_field_name($column,$i);
$value = $$value;
$values .= "'$value'";
if($i != mysql_num_fields($column)-1)
$values .= ",";
}
$sql = "INSERT INTO $table VALUES ($values)";
mysql_query($sql);
This code relies on 2 variables being correctly set: $db is the name of the
database you are working with, and $table is the name of the table. Other
than that what this script basically does is goes through every column in
the specified table and dynamically creates a query from the names of the
columns. Your variable names will need to match the column names exactly or
this will insert/update null values.
----- Original Message -----
From: "midget2000x" <midget@elaris.com>
To: <php-general@lists.php.net>
Sent: Sunday, May 13, 2001 1:31 PM
Subject: [PHP] One database, different forms
> I am writing a PHP application that will operate on a MySQL database.
There
> will be 4 types of forms (like catalog request, info request, etc.)
calling
> the code which writes the data to the database.
>
> Since the variable names on the forms will equal the MySQL column names
(as they
> should), I am wondering if there is a way for me to create my SQL
statements on
> the fly so that only data passed is written. Otherwise I'll have to
create 8
> types of SQL statements...INSERT (if the record, keyed by e-mail address,
> doesn't exist), and UPDATE (if the record does exist) for all 4 forms.
>
> For example, on my "add to mailing list" form, only the e-mail address is
> collected. I'd like the PHP to recognize that only the 'email' field is
passed
> and create the SQL statement that only writes the e-mail to the database.
>
> Any ideas greatly appreciated!
>
> Thanks,
>
> Rory
>
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