Xdebug doesn't report execution of switch and try statements and class constants. I'm not sure whether this is a feature or a bug and I couldn't find the answer elsewhere.

1 <?php
2
3 xdebug_start_code_coverage();
4
5 $action = '';
6
7 switch($action)
8 {
9 default:
10 }
11
12 var_export(xdebug_get_code_coverage());
13
14 ?>

Line 7 is missing here
array (
'/home/simon/switch_xdebug.php' =>
array (
5 => 1,
9 => 1,
10 => 1,
12 => 1,
),
)

1 <?php
2
3 xdebug_start_code_coverage();
4
5 try
6 {
7 throw new Exception();
8 }
9 catch(Exception $e) {}
10
11 var_export(xdebug_get_code_coverage());
12
13 ?>

Line 5 is missing here
array (
'/home/simon/try_catch_xdebug.php' =>
array (
7 => 1,
9 => 1,
11 => 1,
),
)

1 <?php
2
3 xdebug_start_code_coverage();
4
5 class foo
6 {
7 const MESSAGE = 'Hello World';
8 }
9
10 echo foo::MESSAGE;
11
12 var_export(xdebug_get_code_coverage());
13
14 ?>

Line 7 is missing here
array (
'/home/simon/const_xdebug.php' =>
array (
6 => 1,
10 => 1,
12 => 1,
),
)