Form Insert Array Help PHP/HTML

Nathan Riley
Nathan Riley used Ask the Experts™
on
I'm having issues trying to insert a form as it needs to loop.  I need to loop the submit to insert all of the instances of my form fields.


HTML
<form method="post" action="submit.php">
<input type="text" name="duedate[]"/>
<input type="text" name="update[]"/>

<input type="text" name="duedate[]"/>
<input type="text" name="update[]"/>

<input type="text" name="duedate[]"/>
<input type="text" name="update[]"/>

<input type="submit"/>
</form>

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$duedate = $_POST['duedate'];
$update = $_POST['update'];

$result=mysql_query("insert into daily_emails_history (duedate,update)
                            select duedate,update
                            from daily_emails_project");

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Most Valuable Expert 2011
Top Expert 2016

Commented:
You can use var_dump($_POST) to see what the data looks like after the form is submitted.  You will probably find that you want to use an iterator like foreach() to access all of the elements.
Most Valuable Expert 2011
Top Expert 2016

Commented:
Please see http://www.iconoun.com/demo/temp_gallitin.php

You'll find that each of the POST array elements is an array.  I do not understand the intent of the SQL statements, but maybe this will be enough to show you how to get to the data.

<?php // demo/temp_gallitin.php
error_reporting(E_ALL);

// SEE http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_28379951.html

// NOTE THE ACTION= ATTRIBUTE REMOVED TO CAUSE THIS SCRIPT TO POST TO ITS OWN URL
$html = <<<EOD
<form method="post"> <!-- action="submit.php" -->
<input type="text" name="duedate[]"/>
<input type="text" name="update[]"/>

<input type="text" name="duedate[]"/>
<input type="text" name="update[]"/>

<input type="text" name="duedate[]"/>
<input type="text" name="update[]"/>

<input type="submit"/>
</form>
EOD;

// IF THERE IS A REQUEST
if (!empty($_POST))
{
    echo '<pre>';
    var_dump($_POST);
    echo '</pre>';
    echo PHP_EOL;
    foreach ($_POST['duedate'] as $k => $d)
    {
        echo PHP_EOL . "<br>KEY $k POINTS TO $d";
    }
}

// SHOW THE FORM
echo $html;

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Nathan RileyFounder

Author

Commented:
The second piece of code I posted was in a submit.php and inserts some data.
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Most Valuable Expert 2011
Top Expert 2016

Commented:
Well there might be some data inserted by that code, but I rather doubt it would use any of the data that came from the POST request.  

You might want to consider two things that could be helpful.  First, prepare the query in its own variable instead of loading it into a function call.  That way you can look at the query string and determine if it has the information you want.  Second, convert the code to MySQLi so you don't get tripped up by a deprecated SQL extension.
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/PHP_Databases/A_11177-PHP-MySQL-Deprecated-as-of-PHP-5-5-0.html
Nathan RileyFounder

Author

Commented:
Yeah I copied out the wrong insert code there, but can't edit the question now.  This is a super simple insert that needs to be done for an internal project so no worry of sql injection.  The server it's on doesn't have mysqli installed so mysql is all I can work with.  


I know that the submit.php needs to do some sort of foreach loop,but not clear on how it works.
Most Valuable Expert 2011
Top Expert 2016

Commented:
You can post a new code snippet showing the insert code.  Or you can just tell me what you want to insert and I may be able to show you a query that would work (or come close).
Nathan RileyFounder

Author

Commented:
Well the html code is correct.

My submit.php
mysql_query("insert into daily_emails_project (duedate, update)
                            values('$duedate','$update')");

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So with that in that.  How would the foreach work?  What about the $update post?

foreach ($_POST['duedate'] as $k => $d)
    {
        mysql_query("update daily_emails_project
                            set duedate='$d', update='$update'");
    }

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Nathan RileyFounder

Author

Commented:
foreach ($_POST['duedate'] as $k => $d && $_POST['update'] as $u => $up)
    {
        mysql_query("update daily_emails_project
                            set duedate='$d', update='$update'");
    }  

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Doesn't seem to work for me.
Most Valuable Expert 2011
Top Expert 2016

Commented:
It's a little different from that.  I'll show you an example in a moment.  You may want to think about what will happen if the client does not fill in all of the fields -- that's a business rules issue, not a technical issue.  You would potentially have empty fields in your data base.  Maybe some sanity checks are in order.
Most Valuable Expert 2011
Top Expert 2016
Commented:
Try this...

<?php // demo/temp_gallitin.php
error_reporting(E_ALL);

// SEE http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_28379951.html

// NOTE THE ACTION= ATTRIBUTE REMOVED TO CAUSE THIS SCRIPT TO POST TO ITS OWN URL
$html = <<<EOD
<form method="post"> <!-- action="submit.php" -->
<input type="text" name="duedate[]"/>
<input type="text" name="update[]"/>

<input type="text" name="duedate[]"/>
<input type="text" name="update[]"/>

<input type="text" name="duedate[]"/>
<input type="text" name="update[]"/>

<input type="submit"/>
</form>
EOD;

// IF THERE IS A REQUEST
if (!empty($_POST))
{
    foreach ($_POST['duedate'] as $k => $d)
    {
        $duedate = $d;
        $update  = $_POST['update'][$k];
        $query   = "INSERT INTO daily_emails_project (duedate, update) VALUES ('$duedate','$update')";

        // SHOW THE QUERY
        echo PHP_EOL . "<br>$query";
    }
}

// SHOW THE FORM
echo $html;

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Most Valuable Expert 2011
Top Expert 2016

Commented:
Thanks for the points, ~Ray

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