PHP ʖ²ἯTH º󍋼/A Ղ 12. w³̿ؖƼ/TD declare declare (directive) statement Ticks ?php // A function that records the time when it is called function profile ($dump = FALSE) {static $profile; // Return the times stored in profile, then erase it if ($dump) {$temp = $profile; unset ($profile); return ($temp);} $profile[] = microtime ();} // Set up a tick handler register_tick_function("profile"); // Initialize the function before the declare block profile (); // Run a block of code, throw a tick every 2nd statement declare (ticks=2) {for ($x = 1; $x 50; ++$x) {echo similar_text (md5($x), md5($x*$x)), "br / ;";}} // Display the data stored in the profiler print_r (profile (TRUE));? º󍋼/A ưµ㼯A switch ɏһ¼¶ return