faith solution: checkbox example in php

<html>
<body>
<form method="post" name="form1">
<input type="checkbox" name="checkbox1" value="Reading" >Reading</input>
<input type="checkbox" name="checkbox2" value="Writting">Writting</input>
<input type="checkbox" name="checkbox3" value="Fighting">Fighting</input>
<input type="submit" name="display" value="Show">
</form>
</body>
</html>
<?php
if(isset($_REQUEST['display']))
{
    echo 'hobbies are:<br/>';
    for($i=1;$i<=3;$i++)
    {
        $temp="checkbox".$i;

        if( isset( $_REQUEST[$temp]))
        {
        echo "<br/>".$_REQUEST[$temp];
        }
    }
}
?>

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checkbox example in php