I am creating an array and then displaying the elements of it with a dropdown using php and html. The array is varying size, so I have a foreach statement to display it, the problem is I can’t figure out why the first value in the dropdown is always empty (I want the first value to actually be from my array). Here’s the code, any help is much appreciated!
<html>
<form id="form1" name="form1" method="post" onsubmit="" onreset="" action="thing.php">
<?php
$data = array();
$data[4] = 20.4541;
$data[5] = 32.5631;
$data[6] = 41.9715;
$data[7] = "text";
$data[10] = 2231;
$bestValue = 5;
echo " " . $key;
echo "<select name='dropdown'>";
echo "<option value=''></option>";
if($_POST['dropdown'] !=0){
foreach($data AS $key=>$value) {
$sel = '';
if($key==$_POST['dropdown'] ) {
$sel = "selected";
}
echo "<option value='".$key."' ".$sel.">".$key."</option>";
}}
else{
foreach($data AS $key=>$value) {
$sel = '';
if($key==$bestValue ) {
$sel = "selected";
}
echo $value;
echo "<option value='".$key."' ".$sel.">".$key."</option>";
}}
echo "</select>";
foreach($data AS $key2=>$value){
if($_POST['dropdown'] == $key2){
echo " " . $data[$key2] . " degrees";}}
?>
<script>
function submitForm(action)
{
document.getElementById('form1').action = action;
document.getElementById('form1').submit();
}
</script>
<center>
<input type="button" onclick="submitForm('thing.php')" value="Find Angle" />
</center>
</html>
As you can see the first value in the dropdown is empty. How do I remove this? Thanks.
The first option you are printing is an empty option.
Remove the line