dynamic select option with php
How to get a dynamic select option with php without any submit button? This code shows Undefined index: taskOption error
<form name="form" action="" method="POST"> <select name="taskOption"> <option value="1">First</option> <option value="2">Second</option> <option value="3">Third</option> </select> </form> <?php $selectOption = $_POST['taskOption'];?>
Answer
You cannot get form values without posting the form. In order to get the value without button, use jquery to post form with onselect.
<form name="form" id="form" action="someAction.php" method="POST">
<select name="taskOption" id="taskOption" onselect="getValue()">
<option value="1">First</option>
<option value="2">Second</option>
<option value="3">Third</option>
</select>
</form>
<script>
function getValue(){
$("#taskOption").val();
$("#form").submit();
}