I have created a simple dropdown using the code below.
<div class="row">
<h2>Select Sample #1</h2>
<select class="selectpicker" id="select1">
<option>Mustard</option>
<option>Ketchup</option>
<option>Relish</option>
</select>
</div>Now need to create the dropdown in a way that I can enter new items to the dropdown so that it will be enabled to select the value and visible next time also.
<select class="selectpicker" id="select1">
<?php foreach ($options as $optionValue => $optionName) { ?>
<option value="<?= $optionValue ?>"> <?= $optionName ?> </option>
<?php } ?>
</select>
If you want to add items to select in browser, you must do it with js because php is back end language.
it is so simple
<!DOCTYPE html>
<html>
<body>
<?php
$txts = ["Mustard","Ketchup","Relish"]; // put you dynamic array
?>
<select class="selectpicker" id="select1">
<?php foreach ($txts as $txt) { ?> // add Foreachloop for display object
<option value="<?= $txt ?>"> <?= $txt ?> </option>
<?php } ?>
</select>
</body>
</html>
if you need to add item than go for javascript
