initialize select tag with php variable

Question

I have a select tag ...

<select id="input_O6" type="text" name="select_input">
        <option value="Level 1">Level 1</option>
        <option value="Level 2">Level 2</option>
        <option value="Level 3">Level 3</option>
        <option value="Level 4">Level 4</option>
        <option value="Level 5">Level 5</option>
        <option value="Level 6">Level 6</option>
        <option value="Level 7">Level 7</option>
        <option value="Level 8">Level 8</option>
        </select>

the user selects a value and I store the selected value to the sql database. When I reload the page, I'm retrieving the value selected in my php and I'm trying to set the select tag to this value. Other inputs, I simply do it like this...

<input id="input_O3" type="number" value=<?php echo $storedValue_O3;?>>

Is there a simple way to do this for the select tag?

Thanks in advance

you have to check every value in that select and check if its same then add a selected="selected" to the option — roullie
– roullie, Commented Nov 26, 2014 at 7:29

DannyTheDev · Accepted Answer · 2014-11-26 07:40:36Z

1

for($i = 1; $i<=8; $i++){

  $selected = ($storedValue_O3 == $i) ? "selected" : null;

  echo "<option value='Level ".$i."' ".$selected.">Level ".$i."</option> ";

}

edited Nov 26, 2014 at 7:40

DannyTheDev

4,1732 gold badges24 silver badges36 bronze badges

answered Nov 26, 2014 at 7:34

Kin Chan

292 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

EternalHour Over a year ago

Rather than just posting code, explain how/why it works.

Pankaj Goyal · Accepted Answer · 2014-11-26 08:33:54Z

0

An option field has a selected attribute. You can set this using php:

<select id="input_O6" type="text" name="select_input">
    <option value="Level 1" <?php echo ($selectedval == 1 ? 'selected' : '') ?>>Level 1</option>
    <option value="Level 2" <?php echo ($selectedval == 2 ? 'selected' : '') ?>>Level 2</option>
    <option value="Level 3" <?php echo ($selectedval == 3 ? 'selected' : '') ?>>Level 3</option>
    <option value="Level 4" <?php echo ($selectedval == 4 ? 'selected' : '') ?>>Level 4</option>
</select>

edited Nov 26, 2014 at 8:33

Pankaj Goyal

1,5583 gold badges15 silver badges26 bronze badges

answered Nov 26, 2014 at 7:31

Finwood

3,9911 gold badge23 silver badges39 bronze badges

1 Comment

Diego Over a year ago

Thanks... this does just what I need!

Pupil · Accepted Answer · 2014-11-26 07:38:19Z

0

Get the input variable From $_POST or $_GET depending upon your form submission method.

Get all the drop down options in an array, loop over them.

And create options.

If you get the selected value, make the particular option selected, otherwise, not selected.

This should work.

<?php
$select_input = ! empty($_POST['select_input']) ? $_POST['select_input'] : '';

//Get the input variable:

?>

And Do the following changes:

<?php
$select_input = ! empty($_POST['select_input']) ? $_POST['select_input'] : '';
$arrInp = array();
$arrInp['Level 1'] = 'Level 1';
$arrInp['Level 2'] = 'Level 2';
$arrInp['Level 3'] = 'Level 3';
$arrInp['Level 4'] = 'Level 4';

$arrInp['Level 5'] = 'Level 5';
$arrInp['Level 6'] = 'Level 6';
$arrInp['Level 7'] = 'Level 7';
$arrInp['Level 8'] = 'Level 8';
?>


<select id="input_O6" type="text" name="select_input">
    <?php
    foreach ($arrInp as $k => $v) {
        $selected = ($select_input == $k) ? 'selected="selected"' : '';
    ?>
        <option value="<?php echo $k;?>" <?php echo $selected;?>><?php echo $v;?></option>
        <?php
 } 
       ?>
</select>

edited Nov 26, 2014 at 7:38

answered Nov 26, 2014 at 7:30

Pupil

24k6 gold badges50 silver badges71 bronze badges

1 Comment

DannyTheDev Over a year ago

you have mistyped $_POST['select_input'] multiple times, plus the OP explained he is getting his values from a SQL query - not a POST/GET request

Collectives™ on Stack Overflow

initialize select tag with php variable

3 Answers 3

1 Comment

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related