1--TEST-- 2DCE 009: Foreach over empty array is a no-op 3--INI-- 4opcache.enable=1 5opcache.enable_cli=1 6opcache.optimization_level=-1 7opcache.opt_debug_level=0x20000 8opcache.preload= 9zend_test.observer.enabled=0 10--EXTENSIONS-- 11opcache 12--FILE-- 13<?php 14class Loop { 15 const VALUES = []; 16 public static function test() { 17 echo "Start\n"; 18 $y = []; 19 foreach ($y as $x) { 20 } 21 echo "Done\n"; 22 } 23 public static function test2() { 24 foreach (self::VALUES as $x) { 25 } 26 } 27 public static function test3() { 28 foreach ([] as $k => &$v) { 29 } 30 } 31} 32Loop::test(); 33Loop::test2(); 34Loop::test3(); 35--EXPECTF-- 36$_main: 37 ; (lines=7, args=0, vars=0, tmps=0) 38 ; (after optimizer) 39 ; %sdce_009.php:1-23 400000 INIT_STATIC_METHOD_CALL 0 string("Loop") string("test") 410001 DO_UCALL 420002 INIT_STATIC_METHOD_CALL 0 string("Loop") string("test2") 430003 DO_UCALL 440004 INIT_STATIC_METHOD_CALL 0 string("Loop") string("test3") 450005 DO_UCALL 460006 RETURN int(1) 47 48Loop::test: 49 ; (lines=3, args=0, vars=0, tmps=0) 50 ; (after optimizer) 51 ; %sdce_009.php:4-10 520000 ECHO string("Start 53") 540001 ECHO string("Done 55") 560002 RETURN null 57 58Loop::test2: 59 ; (lines=1, args=0, vars=0, tmps=0) 60 ; (after optimizer) 61 ; %sdce_009.php:11-14 620000 RETURN null 63 64Loop::test3: 65 ; (lines=3, args=0, vars=0, tmps=1) 66 ; (after optimizer) 67 ; %sdce_009.php:15-18 680000 V0 = FE_RESET_RW array(...) 0001 690001 FE_FREE V0 700002 RETURN null 71Start 72Done 73
