duanbai1974 2019-04-19 18:20
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从PHP中的选定选项中获取值并在DB中更新

I am trying to create a database display that displays data from MongoDB in an HTML table. On one column I want a drop down option that can be selected by user and updated in the DB.

I can't seem to get the value selected by user.

I have created a table in PHP that's accessing the DB and displaying the values. I created the select dropdown similar to this PHP get dropdown value and text

$data .= '<td><select id="l" name="l"><option value="0" selected>-- Assign Value --</option><option value="1">Cat</option><option value="2">Mouse</option><option value="3">Dog</option></select></td>';
$assign = array('-- Assign Value --','Cat','Mouse','Dog');
$selected= $assign[$_POST['l']];
$document['l']=$selected;

Finally I am displaying the $data. All other values are displayed correctly.

Obviously selected can't access the 'l' item and is showing Notice: Undefined index: l error.

A possible solution to get the value selected from drop down by user and update it in the MongoDB will be appreciated.

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