$re = '/^( {3})+/m';
$str = ' EMPTY_CNT :
for i in 0 to C_DESCRIPTOR_NUM - 1 loop
if r.descriptor_array(i).descriptor_state = S_READ_TO_DUMP then
v.dump_in_progress_cnt := v.dump_in_progress_cnt + 1;
end if;
end loop; -- i
entity descriptor_manager is
port (
i_clk : in std_logic;
i_rst : in std_logic;
i_desc_mngr : in t_i_desc_mngr;
o_desc_mngr : out t_o_desc_mngr;
-- c/s registers
cr_descriptor_select : in std_logic_vector(31 downto 0);
cr_descriptor_data : out std_logic_vector(31 downto 0);
fsm_descriptor_ctrl_status : out std_logic_vector(31 downto 0);
fsm_event_handler_status : out std_logic_vector(31 downto 0)
);
end entity descriptor_manager;';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php