Send multiple values from a foreach Loop via a Variable

Question

I have a foreach loop (see below):

<form action="code/update-to-dispatched.php" method="post" name="markAsDispatched">
    <?php
        foreach ($orders as $row) {
            $_POST['Username'] = $row['Username'];

            echo "<tr class='even'>";
            echo "<td>";
            echo "<strong>Order Date:</strong> ". $row['OrderDate'] ." <br />";
            echo "</td>";           
            echo "<td>";
            echo "<strong>Order ID:</strong> ". $row['OrderID'] ."";
            echo "</td>";
            echo "<td>";
            echo "<strong>Username:</strong> <input type='text' name='username' value=". $row['Username'] ." readonly style='border: 0; background: none;'>";
            echo "</td>";
            echo "<td>";
            echo '<input type="checkbox" name="chkBox[]" id="chkBox" value="'. $row['OrderID'] .'">';
            echo "</td>";
            echo "</tr>";
        }
    ?>

    <span class="tag"><a href="javascript:checkall('markAsDispatched','chkBox',true)">CHECK ALL</a></span>
    <span class="tag"><a href="javascript:checkall('markAsDispatched','chkBox',false)">UNCHECK ALL</a></span>
    <input type="submit" name="markAsDispatched" value="MARK AS DISPATCHED" />
</form>

I currently have 3 orders in my Database so the code above shows 3 orders. I am trying to pass all of the email addresses from the field via the $_POST['Username']. Why does the post variable only equal to the last email rather than a comma separated list such "[email protected], [email protected], [email protected]"?

Ashley · Accepted Answer · 2015-11-02 14:12:52Z

1

If you want a comma-delimited list, try this:

$usernames = array();
foreach ($orders as $row) {
            //$_POST['Username'] = $row['Username'];
            $usernames[] = $row['Username'];

            echo "<tr class='even'>";
            echo "<td>";
            echo "<strong>Order Date:</strong> ". $row['OrderDate'] ." <br />";
            echo "</td>";           
            echo "<td>";
            echo "<strong>Order ID:</strong> ". $row['OrderID'] ."";
            echo "</td>";
            echo "<td>";
            echo "<strong>Username:</strong> <input type='text' name='username' value=". $row['Username'] ." readonly style='border: 0; background: none;'>";
            echo "</td>";
            echo "<td>";
            echo '<input type="checkbox" name="chkBox[]" id="chkBox" value="'. $row['OrderID'] .'">';
            echo "</td>";
            echo "</tr>";
        }

echo implode(',', $usernames);

You should never override the $_POST parameters by the way, it's very bad practise.

answered Nov 2, 2015 at 14:12

Ashley

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9 Comments

user5312305 Over a year ago

Thank you for helping @Ashley. I will bare that in mind. However, I am trying to echo out echo implode(',', $usernames); on "update-to-dispatched.php" which is the action of the form and I am getting the error: Warning: implode() [function.implode]: Invalid arguments passed in...

Ashley Over a year ago

Can you output the value of $usernames in a var_dump?

user5312305 Over a year ago

var_dump($usernames); displays NULL.

Ashley Over a year ago

Odd. And you say that in the loop detailed above, it definitely outputs some rows? As that suggests that it's not going through the loop above.

user5312305 Over a year ago

On the page where the foreach loop is I can see 3 rows, each with a different email address on... I am trying to echo out the array of emails on the action of the form which is update-to-dispatched.php, any other ideas?

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