i have a php form which submits data to another php for validation. if any fields are left blank the validator php sends a message back to original php form along with all the pre filled variables using session variables so that user doesn't have to fill them again.
i can use these session variables to fill in text boxes again like this
value="<?php echo $_SESSION['fname'] ?>"
but how to go about populating drop downs, radio buttons and check boxes?
thanks
For a select, checkbox or radio box you would need to check whether the values match. Something like:
<select name="fname">
<option value="1" <?php if($_SESSION['fname'] == 1) echo 'selected'; ?>>1</option>
<option value="2" <?php if($_SESSION['fname'] == 2) echo 'selected'; ?>>2</option>
</select>
It's easier if you are iterating through the values for the option field:
<select name="fname">
<?php foreach($array AS $key => $value) { ?>
<option value="<?php echo $value; ?>" <?php if($_SESSION['fname'] == $value) echo 'selected'; ?>><?php echo $value; ?></option>
<?php } ?>
</select>
A <select>
element's selected <option>
is not determined by it's value=
attribute. In order to mark an option selected, the <option>
element must have the selected
attribute set on it, as follows:
<select>
<option>1</option>
<option selected>2</option>
<option>3</option>
</select>
In order to do this programmatically, you need to iterate through the options, and manually test for the correct option, and add selected
to that.
There is a far simpler method using JQuery. You can set Selects with .val() so make the most of it.
<script type="text/javascript">
$("#fname").val("<?php echo $_SESSION['fname']; ?>");
</script>
Don't forget to set the id of the select as well as the name to fname .
... Noticed that your double quote at the end of the statement was misplaced, it should be:
<script>
$("#fname").val("<?php echo $_SESSION['fname'] ?>");
</script>
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