Eso lo puedes hacer declarando un nombre y array.
Código HTML:
Ver original<input name='c1[]' type='checkbox' value='' /> <input name='c1[]' type='checkbox' value='' /> <input name='c1[]' type='checkbox' value='' /> <input name='c1[]' type='checkbox' value='' /> <input name='c1[]' type='checkbox' value='' />
<input name='c2[]' type='checkbox' value='' /> <input name='c2[]' type='checkbox' value='' /> <input name='c2[]' type='checkbox' value='' /> <input name='c2[]' type='checkbox' value='' /> <input name='c2[]' type='checkbox' value='' />
<input name='c3[]' type='checkbox' value='' /> <input name='c3[]' type='checkbox' value='' /> <input name='c3[]' type='checkbox' value='' /> <input name='c3[]' type='checkbox' value='' /> <input name='c3[]' type='checkbox' value='' />
Luego con PHP solo tienes que recorrer en un bucle los array
Código PHP:
Ver originalforeach($_GET['c1'] as $valor){
}
foreach($_GET['c2'] as $valor){
}
foreach($_GET['c3'] as $valor){
}