Check if a radio button has been checked

[admin]

Code: [Select]

<?php
if(isset($_POST['submit']))
{
$fradio = $_POST['fradio'];
if (strlen($fradio) == 0) {
echo "<center>FALSE:<a href=\"javascript:history.go(-1)\">Go Back</a></center>";  
 Die();
}else{
echo "<center>TRUE:<a href=\"javascript:history.go(-1)\">Go Back</a></center>";
}  
}else{
?>
<form method="post" action="check.php">
<input type="radio" name="fradio" value="1">1
<input type="radio" name="fradio" value="2">2
<input type="submit" name="submit" value="submit">
</form>
<?php
}
?>

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