3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = str_repeat('foo', 500000); $y = 'bar'; $before = microtime(1); $x = $x . $y; printf('%f'."\n", microtime(1) - $before); $x = str_repeat('foo', 500000); $y = 'bar'; $before = microtime(1); $x .= $y; printf('%f'."\n", microtime(1) - $before);
Output for 7.4.1
0.001110 0.000001
Output for 7.4.0
0.001208 0.000002
Output for 7.3.13
0.001128 0.000012
Output for 7.3.12
0.001339 0.000012
Output for 7.3.11
0.001288 0.000013
Output for 7.3.10
0.000819 0.000001
Output for 7.3.9
0.000866 0.000009
Output for 7.3.8
0.000874 0.000008
Output for 7.3.7
0.000890 0.000008
Output for 7.3.6
0.000831 0.000001
Output for 7.3.5
0.000866 0.000008
Output for 7.3.4
0.001013 0.000001
Output for 7.3.3
0.000902 0.000001
Output for 7.3.2
0.000456 0.000008
Output for 7.3.1
0.000554 0.000010
Output for 7.3.0
0.000595 0.000010
Output for 7.2.26
0.000945 0.000001
Output for 7.2.25
0.001433 0.000003
Output for 7.2.24
0.000935 0.000009
Output for 7.2.23
0.000998 0.000016
Output for 7.2.22
0.000904 0.000009
Output for 7.2.21
0.000895 0.000007
Output for 7.2.20
0.001069 0.000001
Output for 7.2.19
0.000884 0.000007
Output for 7.2.18
0.000996 0.000002
Output for 7.2.17
0.001127 0.000007
Output for 7.2.16
0.001014 0.000007
Output for 7.2.15
0.000487 0.000007
Output for 7.2.14
0.000628 0.000009
Output for 7.2.13
0.000421 0.000008
Output for 7.2.12
0.000555 0.000001
Output for 7.1.32, 7.2.11
0.000532 0.000009
Output for 7.2.10
0.000510 0.000002
Output for 7.2.9
0.000459 0.000008
Output for 7.2.8
0.000430 0.000007
Output for 7.2.7
0.000481 0.000002
Output for 7.2.6
0.000603 0.000011
Output for 7.2.5
0.000533 0.000001
Output for 7.2.4
0.000562 0.000001
Output for 7.2.3
0.000466 0.000007
Output for 7.2.2
0.000511 0.000007
Output for 7.2.1
0.000537 0.000001
Output for 7.2.0
0.000530 0.000001
Output for 7.1.33
0.000561 0.000001
Output for 7.1.31
0.000620 0.000011
Output for 7.1.30
0.000545 0.000011
Output for 7.1.29
0.000603 0.000010
Output for 7.1.28
0.000552 0.000008
Output for 7.1.27
0.000475 0.000010
Output for 7.1.26
0.000488 0.000007
Output for 7.1.25
0.000702 0.000009
Output for 7.1.24
0.000507 0.000011
Output for 7.1.23
0.000553 0.000009
Output for 7.1.22
0.000608 0.000013
Output for 7.1.21
0.000483 0.000009
Output for 7.1.20
0.000530 0.000010
Output for 7.1.19
0.000503 0.000007
Output for 7.1.18
0.000547 0.000008
Output for 7.1.17
0.000555 0.000009
Output for 7.1.16
0.000503 0.000009
Output for 7.1.15
0.000518 0.000011
Output for 7.1.14
0.000543 0.000010
Output for 7.1.13
0.000565 0.000011
Output for 7.1.12
0.000534 0.000009
Output for 7.1.11
0.000528 0.000001
Output for 7.1.10
0.000479 0.000007
Output for 7.1.9
0.000533 0.000009
Output for 7.1.8
0.000566 0.000009
Output for 7.1.7
0.000457 0.000007
Output for 7.1.6
0.000488 0.000008
Output for 7.0.5, 7.1.5
0.000558 0.000009
Output for 7.1.4
0.000572 0.000009
Output for 7.1.3
0.000581 0.000008
Output for 7.1.2
0.000475 0.000007
Output for 7.0.3, 7.1.1
0.000507 0.000008
Output for 7.1.0
0.000428 0.000008
Output for 7.0.33
0.000550 0.000011
Output for 7.0.32
0.000671 0.000012
Output for 7.0.31
0.000641 0.000013
Output for 7.0.30
0.000848 0.000017
Output for 7.0.29
0.000620 0.000007
Output for 7.0.28
0.000452 0.000008
Output for 7.0.27
0.000772 0.000002
Output for 7.0.26
0.000529 0.000008
Output for 7.0.25
0.000536 0.000008
Output for 7.0.24
0.000520 0.000007
Output for 7.0.23
0.000666 0.000012
Output for 7.0.22
0.000572 0.000010
Output for 7.0.21
0.000471 0.000008
Output for 7.0.20
0.000465 0.000010
Output for 7.0.19
0.000511 0.000008
Output for 7.0.18
0.000542 0.000008
Output for 7.0.17
0.000664 0.000003
Output for 7.0.16
0.000476 0.000001
Output for 7.0.15
0.000526 0.000008
Output for 7.0.14
0.000587 0.000012
Output for 7.0.13
0.000477 0.000009
Output for 7.0.12
0.000641 0.000021
Output for 7.0.11
0.000491 0.000001
Output for 7.0.10
0.000517 0.000008
Output for 7.0.9
0.000477 0.000002
Output for 7.0.8
0.000467 0.000007
Output for 7.0.7
0.000592 0.000014
Output for 7.0.6
0.000495 0.000001
Output for 7.0.4
0.000542 0.000009
Output for 7.0.2
0.000610 0.000014
Output for 7.0.1
0.000500 0.000008
Output for 7.0.0
0.000471 0.000006
Output for 5.6.40
0.001077 0.000008
Output for 5.6.39
0.000947 0.000008
Output for 5.6.38
0.001144 0.000009
Output for 5.6.37
0.000898 0.000008
Output for 5.6.0, 5.6.36
0.000978 0.000009
Output for 5.6.35
0.001328 0.000011
Output for 5.6.34
0.001131 0.000008
Output for 5.6.33
0.001442 0.000012
Output for 5.5.1, 5.6.32
0.000999 0.000008
Output for 5.6.3, 5.6.31
0.001354 0.000009
Output for 5.6.30
0.001009 0.000010
Output for 5.6.29
0.000942 0.000008
Output for 5.6.28
0.001236 0.000007
Output for 5.6.27
0.000963 0.000008
Output for 5.6.26
0.001292 0.000013
Output for 5.6.25
0.001275 0.000011
Output for 5.6.24
0.000795 0.000007
Output for 5.6.23
0.001202 0.000008
Output for 5.6.22
0.001310 0.000009
Output for 5.6.21
0.001032 0.000009
Output for 5.6.20
0.001169 0.000009
Output for 5.6.19
0.000902 0.000009
Output for 5.6.18
0.001383 0.000013
Output for 5.6.17
0.001106 0.000008
Output for 5.6.16
0.000958 0.000008
Output for 5.6.15
0.000853 0.000009
Output for 5.6.14
0.000841 0.000006
Output for 5.6.13
0.000874 0.000006
Output for 5.6.12
0.000866 0.000006
Output for 5.6.11
0.001126 0.000009
Output for 5.6.10
0.001829 0.000010
Output for 5.6.9
0.000958 0.000007
Output for 5.6.8
0.001159 0.000009
Output for 5.6.7
0.001437 0.000011
Output for 5.6.6
0.000972 0.000008
Output for 5.6.5
0.001030 0.000007
Output for 5.6.4
0.001559 0.000010
Output for 5.6.2
0.000977 0.000007
Output for 5.6.1
0.000969 0.000007
Output for 5.5.38
0.001633 0.000014
Output for 5.5.37
0.001012 0.000009
Output for 5.5.36
0.001374 0.000010
Output for 5.5.35
0.000971 0.000013
Output for 5.5.34
0.001048 0.000007
Output for 5.5.33
0.001345 0.000011
Output for 5.5.32
0.000837 0.000006
Output for 5.5.31
0.001395 0.000010
Output for 5.5.30
0.001401 0.000006
Output for 5.5.29
0.000824 0.000006
Output for 5.5.28
0.001328 0.000009
Output for 5.5.27
0.000949 0.000008
Output for 5.5.26
0.001174 0.000007
Output for 5.5.25
0.001114 0.000012
Output for 5.5.24
0.000968 0.000007
Output for 5.5.23
0.001295 0.000010
Output for 5.5.22
0.000862 0.000007
Output for 5.5.21
0.001243 0.000009
Output for 5.5.20
0.001984 0.000014
Output for 5.5.19
0.001775 0.000013
Output for 5.5.18
0.001990 0.000015
Output for 5.5.17
0.001339 0.000011
Output for 5.5.16
0.001661 0.000008
Output for 5.5.15
0.001651 0.000013
Output for 5.5.14
0.000824 0.000007
Output for 5.5.13
0.001242 0.000009
Output for 5.5.12
0.001003 0.000008
Output for 5.5.11
0.000985 0.000007
Output for 5.5.10
0.001474 0.000010
Output for 5.5.9
0.001001 0.000008
Output for 5.5.8
0.000986 0.000006
Output for 5.5.7
0.001178 0.000007
Output for 5.5.6
0.000895 0.000006
Output for 5.5.5
0.000963 0.000007
Output for 5.5.4
0.001420 0.000007
Output for 5.5.3
0.001052 0.000008
Output for 5.5.2
0.001101 0.000009
Output for 5.5.0
0.001109 0.000010
Output for 5.4.45
0.001727 0.000007
Output for 5.4.44
0.001104 0.000008
Output for 5.4.43
0.001029 0.000008
Output for 5.4.42
0.001520 0.000012
Output for 5.4.41
0.001871 0.000006
Output for 5.4.40
0.000947 0.000007
Output for 5.4.39
0.001386 0.000013
Output for 5.4.38
0.001907 0.000014
Output for 5.4.37
0.001129 0.000007
Output for 5.4.36
0.001859 0.000008
Output for 5.4.35
0.000828 0.000006
Output for 5.4.34
0.000937 0.000007
Output for 5.4.33
0.001226 0.000006
Output for 5.4.32
0.001148 0.000009
Output for 5.4.31
0.001130 0.000007
Output for 5.4.30
0.001374 0.000007
Output for 5.4.29
0.001696 0.000010
Output for 5.4.28
0.001107 0.000012
Output for 5.4.27
0.000962 0.000007
Output for 5.4.26
0.000889 0.000007
Output for 5.4.25
0.001552 0.000011
Output for 5.4.24
0.001733 0.000007
Output for 5.4.23
0.001404 0.000011
Output for 5.4.22
0.001323 0.000009
Output for 5.4.21
0.001552 0.000010
Output for 5.4.20
0.001709 0.000012
Output for 5.4.19
0.001192 0.000007
Output for 5.4.18
0.000876 0.000006
Output for 5.4.17
0.001587 0.000010
Output for 5.4.16
0.001438 0.000013
Output for 5.4.15
0.001231 0.000009
Output for 5.4.14
0.001268 0.000007
Output for 5.4.13
0.001196 0.000007
Output for 5.4.12
0.001464 0.000009
Output for 5.4.11
0.000998 0.000017
Output for 5.4.10
0.001749 0.000011
Output for 5.4.9
0.001484 0.000008
Output for 5.4.8
0.001263 0.000011
Output for 5.4.7
0.001950 0.000007
Output for 5.4.6
0.001443 0.000010
Output for 5.4.5
0.001393 0.000008
Output for 5.4.4
0.001620 0.000007
Output for 5.4.3
0.001818 0.000011
Output for 5.4.2
0.000945 0.000008
Output for 5.4.1
0.001286 0.000009
Output for 5.4.0
0.000914 0.000007
Output for 5.3.29
0.000819 0.000007
Output for 5.3.28
0.000716 0.000002
Output for 5.3.27
0.000964 0.000008
Output for 5.3.26
0.001429 0.000009
Output for 5.3.25
0.001352 0.000009
Output for 5.3.24
0.000783 0.000006
Output for 5.3.23
0.000979 0.000007
Output for 5.3.22
0.001860 0.000014
Output for 5.3.21
0.001292 0.000016
Output for 5.3.20
0.001398 0.000010
Output for 5.3.19
0.001709 0.000007
Output for 5.3.18
0.001170 0.000010
Output for 5.3.17
0.001092 0.000008
Output for 5.3.16
0.001277 0.000009
Output for 5.3.15
0.000863 0.000007
Output for 5.3.14
0.001667 0.000011
Output for 5.3.13
0.001002 0.000007
Output for 5.3.12
0.000792 0.000007
Output for 5.3.11
0.001325 0.000009
Output for 5.3.10
0.001351 0.000009
Output for 5.3.9
0.001107 0.000002
Output for 5.3.8
0.001020 0.000008
Output for 5.3.7
0.001245 0.000006
Output for 5.3.6
0.000928 0.000001
Output for 5.3.5
0.000968 0.000001
Output for 5.3.4
0.001458 0.000002
Output for 5.3.3
0.001065 0.000001
Output for 5.3.2
0.001580 0.000003
Output for 5.3.1
0.001809 0.000002
Output for 5.3.0
0.000881 0.000001
Output for 5.2.17
0.000575 0.000001
Output for 5.2.16
0.000507 0.000002
Output for 5.2.15
0.000459 0.000002
Output for 5.2.14
0.000481 0.000001
Output for 5.2.13
0.000593 0.000001
Output for 5.2.12
0.000643 0.000002
Output for 5.2.11
0.000595 0.000002
Output for 5.2.10
0.000522 0.000001
Output for 5.2.9
0.000665 0.000002
Output for 5.2.8
0.000607 0.000002
Output for 5.2.7
0.000559 0.000001
Output for 5.2.6
0.000459 0.000001
Output for 5.2.5
0.000474 0.000002
Output for 5.2.4
0.000500 0.000003
Output for 5.2.3
0.000663 0.000002
Output for 5.2.2
0.000645 0.000002
Output for 5.2.1
0.000498 0.000001
Output for 5.2.0
0.000487 0.000002
Output for 5.1.6
0.000466 0.000002
Output for 5.1.5
0.000547 0.000002
Output for 5.1.4
0.000536 0.000002
Output for 5.1.3
0.000523 0.000002
Output for 5.1.2
0.000505 0.000002
Output for 5.1.1
0.000675 0.000002
Output for 5.1.0
0.000615 0.000002
Output for 5.0.5
0.000642 0.000003
Output for 5.0.4
0.000543 0.000002
Output for 5.0.3
0.000576 0.000003
Output for 5.0.2
0.000692 0.000004
Output for 5.0.1
0.000484 0.000002
Output for 5.0.0
0.000462 0.000003
Output for 4.4.9
0.000517 0.000003
Output for 4.4.8
0.000525 0.000004
Output for 4.4.7
0.000523 0.000003
Output for 4.4.6
0.000526 0.000003
Output for 4.4.5
0.000516 0.000003
Output for 4.4.4
0.000729 0.000005
Output for 4.4.3
0.000510 0.000003
Output for 4.4.2
0.000496 0.000003
Output for 4.4.1
0.000508 0.000003
Output for 4.4.0
0.000512 0.000004
Output for 4.3.11
0.000529 0.000004
Output for 4.3.10
0.000507 0.000003
Output for 4.3.9
0.000512 0.000005
Output for 4.3.8
0.000560 0.000005
Output for 4.3.7
0.000501 0.000005
Output for 4.3.6
0.000562 0.000005
Output for 4.3.5
0.000531 0.000004
Output for 4.3.4
0.000542 0.000005
Output for 4.3.3
0.000579 0.000006
Output for 4.3.2
0.000558 0.000004
Output for 4.3.1
0.000539 0.000005
Output for 4.3.0
0.000953 0.000006
preferences:
210.5 ms | 401 KiB | 325 Q