<input type="radio" <input type="checkbox" name="hobby[]"

<form method="post" action="test.php">
<input type="radio" name="sex" value="male">~Male
<br>
<input type="radio" name="sex" value="famale">~Famale
<br>
<input type="checkbox" name="hobby[]" value="football">~Football
<br>
<input type="checkbox" name="hobby[]" value="basketball">~Basketball
<br>
<input type="submit">

</form>

 

<?php
//test.php
var_dump($_POST);

/*
array (size=2)
'sex' => string 'famale' (length=6)
'hobby' =>
array (size=2)
0 => string 'football' (length=8)
1 => string 'basketball' (length=10)
*/