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Editorial Team
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Asked: 2026-05-31T10:43:52+00:00

I am pulling data down from a MySQL table and loading it into a

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I am pulling data down from a MySQL table and loading it into a form for editing(updating) a record. Everything is working great until I come the the check boxes. The checkboxes in the form accurately reflect the values in the appropriate columns in the db. But when the person editing changes the checkbox in the edit form it does not pass the data to the database. I have read a ton of checkbox Q&A on stack overflow but don’t seem to find what I am looking for. Sorry if this is a redundant Question. Here is the code.

<label for="amenities-beach">
<input class="choose" name="amenitiesB" id="amenities-beach" type="checkbox" 
value="<?php echo $row1["amenitiesB"]; ?>" 
<?php echo $row1["amenitiesB"] ? 'checked="checked"' : ''; ?> /> 
&nbsp;Close to Beach</label>

Where amenitiesB in:

value="<?php echo $row1["amenitiesB"]; ?>

is what has been returned from the DB with a SELECT statement with:

 $row1 = mysql_fetch_array($result);

But when I change the value in the form and submit it nothing is passed to the variable in the UPDATE statement. Any idea what I am missing? I have 6 of these checkboxes,amenitiesB, amenitiesK, amenitiesS, amenitiesP, amenitiesF, and preferred all with the same code. Any help would be appreciated.
Thank You,
Dave

Ok here is the code: Everything else in the form updates fine. I attempt to pass it to:
$amenitiesB = $_POST[‘amenitiesB’];
then I put it into the update statement
Hotels.amenitiesB='”.$amenitiesB.”‘,
My UPDATE statement is,
$query=”UPDATE Hotels
JOIN surfcup_Rates ON Hotels.id = surfcup_Rates.hotelid
SET Hotels.hotel='”.$hotel.”‘,
More columns, then

Hotels.amenitiesB='".$amenitiesB."', 
Hotels.amenitiesB='".$amenitiesK."',
Hotels.amenitiesB='".$amenitiesS."',
Hotels.amenitiesB='".$amenitiesP."',
Hotels.amenitiesB='".$amenitiesF."',
Hotels.amenitiesB='".$preferred."',

More columns then:

WHERE Hotels.id='".$id."'";
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1 Answer

  1. Editorial Team

    The problem you have comes because when a checkbox is unchecked, by default its data is not transmitted to your PHP, and that’s why you have problems by having the UPDATE query parameter empty.
    So before your update statement you should have:

    $fieldenabled=(bool)(isset($_POST['CHECKBOXNAME']) ? TRUE : FALSE;

    And call your UPDATE query with that.

    EDIT: Of course you can change $_POST with $_GET depending on the sending method of the <form>

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