使用php和复选框更新多行mysql

Question

I am creating a system in which a user will be able to change the "status" of an item in a MySQL table.

Basically my table has a unique (auto incrementing) ID field, and 18 other fields. One of those fields is a status field. I need to figure out a way to change the status from "active" to "hold" when a user checks off a checkbox.

I am assuming that if I assign a value to the checkbox and feed it into an auto incrementing array, that it should pull through when it's checked. I don't know if this is correct though.

Every time I try it, the only status that gets changed is the 1st one and that's it. Here's my code that pulls out the entry's:

while($row = mysqli_fetch_array($result))
        {
            echo "<table border='2' style='width: 100%; margin: auto; border-width: 1px'><tr><th>Date Requested</th><th>Time Called</th><th>Tenant Name</th><th>Apartment</th><th>Work Requested</th><th>Tenant need to be present?</th><th>Good Date</th><th>Time to complete</th><th>Resident Phone #</th></tr>";
            echo "<input type='hidden' name='id[$i]' value=" . $row['id'] . ">";
            echo "<tr>";
            echo "<td align='center'>" . date("m-d-Y", strtotime($row['r_date'])) . "</td>";
            echo "<td align='center'>" . date("g:i A", strtotime($row['t_call'])) . "</td>";
            echo "<td align='center'>" . $row['t_name'] . "</td>";
            echo "<td align='center'>" . $row['loc'] . "</td>";
            echo "<td align='center'>" . $row['w_req'] . "</td>";
            echo "<td align='center'>" . $row['apt_status'] . "</td>";
            if ($row['to_be'] == "1969-12-31") {
                echo "<td align='center'> </td>";
                }
            else {
                echo "<td align='center'>" . date("m-d-Y", strtotime($row['to_be'])) . "</td>";
                };
            echo "<td align='center'>" . $row['g_time'] . "</td>";
            echo "<td align='center'>" . $row['tel'] . "</td></tr>";
            echo "<tr><td align='center' colspan = '3' style='border-width:0px; background-color: #E6E6E6'><strong>Work performed/notes:</strong><br><textarea name='work[$i]'style='width:250px; height:60px'>" . htmlspecialchars($row['w_performed'], ENT_QUOTES) . "</textarea></td>";
            echo "<td colspan='2' align='center' style='border-width:0px; background-color: #E6E6E6'><strong>Check to put Work Order on hold.</strong><br><input name='holding' type='checkbox' value='" . $row['id'] . "' ></td>";
            echo "<td colspan='4' style='border-width:0px; background-color: #E6E6E6'>&nbsp;</td>";
            echo "<tr><td colspan='9' style='border-width:0px'><hr style='height:3px; color: #333; background-color: #333'></td>";
            ++$i;
        }
echo "</table>";

And the code I've been trying to use to pull through the ID using the checkbox is this:

$i = 0;

        $size = count($_POST['holding']);
        while($i < $size) 
        {

        while(isset($_POST['holding'][$i]))
        {
            $sql = "UPDATE w_o SET w_status = 'hold' WHERE id = " . $_POST['id'][$i];
            mysqli_query($mysqli, $sql) or die('Error: ' . $mysqli_error($mysqli));
            ++$i;
        }
        }

I feel like I'm WAY off and would appreciate any help. I've googled how to do this a gazillion times and for some reason I can't seem to find a good enough tutorial. Thank you for your help!

Answer 1

All of your checkboxes will have the same holding name. Upon submission, PHP will only use ONE of the multiple values submitted. If you want to submit multiple different values, you either have to give each field a unique name, or use PHP's "array" hack for the field name: holding[] . Adding the [] tells PHP to expect multiple values, and $_POST['holding'] will be an array of the values, rather than just a single value.

Answer 2

I guess I figured it out, thank you for all the help! This is what I used:

$stmt = mysqli_prepare($mysqli, "UPDATE w_o SET w_status = 'hold' WHERE id = ?");

        mysqli_stmt_bind_param($stmt, "i", $id);
        foreach ($_POST['holding'] as $id) 
        {
            mysqli_stmt_execute($stmt);
        }

I think I tried this earlier, but didn't set holding as an array. Thank you again for all the help!!!

Answer 3

$sql = "UPDATE w_o SET w_status = 'hold' WHERE id in (".array_map("intval",implode(',',$_POST['holding'][$i])).")";

因此您可以使用单个sql更新所有这些