<?php
// tail recursion
function foo($n) {
if($n == 0) return;
return foo($n-1);
}
$time = microtime(true);
foo(1000);
echo (microtime(true) - $time) . ' elapsed';
- Output for 7.3.1
- 4.3153762817383E-5 elapsed
- Output for 7.3.0
- 5.0067901611328E-5 elapsed
- Output for 7.2.13
- 5.4121017456055E-5 elapsed
- Output for 7.2.12
- 4.887580871582E-5 elapsed
- Output for 7.2.11
- 4.8160552978516E-5 elapsed
- Output for 7.2.10
- 4.4822692871094E-5 elapsed
- Output for 7.2.9
- 6.1988830566406E-5 elapsed
- Output for 7.2.4, 7.2.8
- 4.7922134399414E-5 elapsed
- Output for 7.2.7
- 6.7949295043945E-5 elapsed
- Output for 7.2.6
- 5.3882598876953E-5 elapsed
- Output for 7.2.5
- 0.073490858078003 elapsed
- Output for 7.2.3
- 4.0769577026367E-5 elapsed
- Output for 7.2.2
- 5.793571472168E-5 elapsed
- Output for 7.2.1
- 4.0054321289062E-5 elapsed
- Output for 7.2.0
- 5.2928924560547E-5 elapsed
- Output for 7.1.25
- 8.8930130004883E-5 elapsed
- Output for 7.1.7
- 6.6995620727539E-5 elapsed
- Output for 7.1.6
- 5.6028366088867E-5 elapsed
- Output for 7.1.5
- 7.1048736572266E-5 elapsed
- Output for 7.1.0
- 4.4107437133789E-5 elapsed
- Output for 7.0.20
- 5.5074691772461E-5 elapsed
- Output for 7.0.14
- 4.7206878662109E-5 elapsed
- Output for 7.0.8
- 0.00010514259338379 elapsed
- Output for 7.0.7
- 0.00011205673217773 elapsed
- Output for 7.0.6
- 9.7036361694336E-5 elapsed
- Output for 7.0.5
- 0.0001680850982666 elapsed
- Output for 7.0.4
- 5.1021575927734E-5 elapsed
- Output for 7.0.3
- 3.7908554077148E-5 elapsed
- Output for 7.0.2
- 6.0081481933594E-5 elapsed
- Output for 7.0.1
- 3.8862228393555E-5 elapsed
- Output for 7.0.0
- 4.1007995605469E-5 elapsed
- Output for 5.5.26, 5.6.28
- 0.00030899047851562 elapsed
- Output for 5.6.23
- 0.00030994415283203 elapsed
- Output for 5.4.13, 5.6.22
- 0.0003209114074707 elapsed
- Output for 5.6.21
- 0.0002901554107666 elapsed
- Output for 5.6.12, 5.6.20
- 0.00026202201843262 elapsed
- Output for 5.5.9, 5.6.18 - 5.6.19
- 0.0003361701965332 elapsed
- Output for 5.6.17
- 0.00031399726867676 elapsed
- Output for 5.6.1, 5.6.16
- 0.00028300285339355 elapsed
- Output for 5.3.6, 5.6.15
- 0.00034189224243164 elapsed
- Output for 5.4.36, 5.6.14
- 0.00033998489379883 elapsed
- Output for 5.6.13
- 0.00032305717468262 elapsed
- Output for 5.6.3, 5.6.11
- 0.00022697448730469 elapsed
- Output for 5.6.10
- 0.00027108192443848 elapsed
- Output for 5.6.9
- 0.00038695335388184 elapsed
- Output for 5.6.8
- 0.0002751350402832 elapsed
- Output for 5.6.7
- 0.0002140998840332 elapsed
- Output for 5.6.6
- 0.00031781196594238 elapsed
- Output for 5.5.20, 5.6.5
- 0.00031495094299316 elapsed
- Output for 5.6.4
- 0.0003199577331543 elapsed
- Output for 5.6.2
- 0.00032687187194824 elapsed
- Output for 5.6.0
- 0.00029706954956055 elapsed
- Output for 5.5.37
- 0.00031709671020508 elapsed
- Output for 5.5.36
- 0.00032186508178711 elapsed
- Output for 5.5.10, 5.5.31, 5.5.33, 5.5.35
- 0.00030803680419922 elapsed
- Output for 5.5.34
- 0.00029492378234863 elapsed
- Output for 5.5.12, 5.5.32
- 0.00028109550476074 elapsed
- Output for 5.4.34, 5.5.30
- 0.00032806396484375 elapsed
- Output for 5.5.29
- 0.00031900405883789 elapsed
- Output for 5.4.32, 5.5.28
- 0.00028896331787109 elapsed
- Output for 5.5.27
- 0.0002129077911377 elapsed
- Output for 5.5.25
- 0.00026583671569824 elapsed
- Output for 5.5.24
- 0.00029611587524414 elapsed
- Output for 5.4.9, 5.5.23
- 0.00020003318786621 elapsed
- Output for 5.5.22
- 0.00033402442932129 elapsed
- Output for 5.5.21
- 0.0003509521484375 elapsed
- Output for 5.5.19
- 0.00027203559875488 elapsed
- Output for 5.5.18
- 0.00023603439331055 elapsed
- Output for 5.4.38, 5.5.16
- 0.00022506713867188 elapsed
- Output for 5.5.15
- 0.00021696090698242 elapsed
- Output for 5.4.45, 5.5.14
- 0.00025200843811035 elapsed
- Output for 5.5.13
- 0.00022792816162109 elapsed
- Output for 5.5.11
- 0.00025081634521484 elapsed
- Output for 5.5.8
- 0.0003211498260498 elapsed
- Output for 5.4.11, 5.4.25, 5.5.7
- 0.00029993057250977 elapsed
- Output for 5.5.6
- 0.00022006034851074 elapsed
- Output for 5.4.39, 5.5.5
- 0.00019502639770508 elapsed
- Output for 5.5.4
- 0.00020217895507812 elapsed
- Output for 5.5.3
- 0.00020694732666016 elapsed
- Output for 5.5.1 - 5.5.2
- 0.00023198127746582 elapsed
- Output for 5.3.10, 5.5.0
- 0.00021004676818848 elapsed
- Output for 5.4.44
- 0.00031518936157227 elapsed
- Output for 5.4.43
- 0.0003049373626709 elapsed
- Output for 5.4.42
- 0.00027918815612793 elapsed
- Output for 5.4.41
- 0.0002739429473877 elapsed
- Output for 5.4.40
- 0.00024509429931641 elapsed
- Output for 5.4.37
- 0.00034594535827637 elapsed
- Output for 5.4.35
- 0.00025582313537598 elapsed
- Output for 5.4.31
- 0.0002288818359375 elapsed
- Output for 5.4.30
- 0.00028586387634277 elapsed
- Output for 5.4.29
- 0.00028800964355469 elapsed
- Output for 5.4.28
- 0.0002291202545166 elapsed
- Output for 5.4.27
- 0.00024986267089844 elapsed
- Output for 5.4.7, 5.4.26
- 0.00028705596923828 elapsed
- Output for 5.4.24
- 0.00023698806762695 elapsed
- Output for 5.4.3, 5.4.23
- 0.00019192695617676 elapsed
- Output for 5.4.22
- 0.00021100044250488 elapsed
- Output for 5.4.4, 5.4.21
- 0.00018000602722168 elapsed
- Output for 5.4.20
- 0.00018882751464844 elapsed
- Output for 5.4.19
- 0.00019001960754395 elapsed
- Output for 5.4.18
- 0.00019097328186035 elapsed
- Output for 5.4.17
- 0.00018405914306641 elapsed
- Output for 5.4.16
- 0.00018215179443359 elapsed
- Output for 5.4.15
- 0.00018501281738281 elapsed
- Output for 5.4.14
- 0.0001981258392334 elapsed
- Output for 5.4.12
- 0.00034904479980469 elapsed
- Output for 5.4.10
- 0.00027298927307129 elapsed
- Output for 5.4.2, 5.4.8
- 0.00018596649169922 elapsed
- Output for 5.4.6
- 0.00020098686218262 elapsed
- Output for 5.4.5
- 0.0001828670501709 elapsed
- Output for 5.4.1
- 0.00019216537475586 elapsed
- Output for 5.4.0
- 0.00024795532226562 elapsed
- Output for 5.3.29
- 0.0003960132598877 elapsed
- Output for 5.3.28
- 0.00027084350585938 elapsed
- Output for 5.3.27
- 0.00027799606323242 elapsed
- Output for 5.3.26
- 0.00026297569274902 elapsed
- Output for 5.3.25
- 0.00029087066650391 elapsed
- Output for 5.3.24
- 0.0005638599395752 elapsed
- Output for 5.3.23
- 0.00040793418884277 elapsed
- Output for 5.3.22
- 0.0002899169921875 elapsed
- Output for 5.3.21
- 0.00039982795715332 elapsed
- Output for 5.3.20
- 0.00035405158996582 elapsed
- Output for 5.3.19
- 0.00027704238891602 elapsed
- Output for 5.3.18
- 0.00028085708618164 elapsed
- Output for 5.3.17
- 0.00026702880859375 elapsed
- Output for 5.3.16
- 0.00026392936706543 elapsed
- Output for 5.3.15
- 0.00025010108947754 elapsed
- Output for 5.3.14
- 0.00025391578674316 elapsed
- Output for 5.3.13
- 0.00037217140197754 elapsed
- Output for 5.3.12
- 0.00026988983154297 elapsed
- Output for 5.3.11
- 0.00038814544677734 elapsed
- Output for 5.3.9
- 0.000244140625 elapsed
- Output for 5.3.8
- 0.00025796890258789 elapsed
- Output for 5.3.7
- 0.0003659725189209 elapsed
- Output for 5.3.5
- 0.00022292137145996 elapsed
- Output for 5.3.4
- 0.00026893615722656 elapsed
- Output for 5.3.3
- 0.00024700164794922 elapsed
- Output for 5.3.2
- 0.00032711029052734 elapsed
- Output for 5.3.1
- 0.0002589225769043 elapsed
- Output for 5.3.0
- 0.00030112266540527 elapsed
- Output for 5.2.17
- 0.00047898292541504 elapsed
- Output for 5.2.16
- 0.00060200691223145 elapsed
- Output for 5.2.15
- 0.00055098533630371 elapsed
- Output for 5.2.11, 5.2.14
- 0.00053691864013672 elapsed
- Output for 5.2.13
- 0.00053596496582031 elapsed
- Output for 5.2.12
- 0.00069284439086914 elapsed
- Output for 5.2.10
- 0.00050806999206543 elapsed
- Output for 5.2.9
- 0.00051307678222656 elapsed
- Output for 5.2.8
- 0.00041890144348145 elapsed
- Output for 5.2.7
- 0.00076508522033691 elapsed
- Output for 5.2.6
- 0.00052499771118164 elapsed
- Output for 5.2.5
- 0.00094985961914062 elapsed
- Output for 5.2.4
- 0.0011260509490967 elapsed
- Output for 5.2.3
- 0.00093913078308105 elapsed
- Output for 5.2.2
- 0.00095105171203613 elapsed
- Output for 5.2.1
- 0.00082302093505859 elapsed
- Output for 5.2.0
- 0.00075411796569824 elapsed
- Output for 5.1.6
- 0.0010712146759033 elapsed
- Output for 5.1.3, 5.1.5
- 0.0010790824890137 elapsed
- Output for 5.1.4
- 0.0014669895172119 elapsed
- Output for 5.1.2
- 0.00096487998962402 elapsed
- Output for 5.1.1
- 0.0010459423065186 elapsed
- Output for 5.1.0
- 0.0010120868682861 elapsed
- Output for 5.0.5
- 0.0010521411895752 elapsed
- Output for 5.0.4
- 0.0011348724365234 elapsed
- Output for 5.0.3
- 0.0011451244354248 elapsed
- Output for 5.0.2
- 0.0013251304626465 elapsed
- Output for 5.0.1
- 0.001460075378418 elapsed
- Output for 5.0.0
- 0.0012259483337402 elapsed
- Output for 4.4.9
- 0.001331 elapsed
- Output for 4.4.8
- 0.001463 elapsed
- Output for 4.4.7
- 0.002724 elapsed
- Output for 4.4.6
- 0.002775 elapsed
- Output for 4.4.5
- 0.002755 elapsed
- Output for 4.4.4
- 0.002479 elapsed
- Output for 4.4.3
- 0.002839 elapsed
- Output for 4.4.2
- 0.002552 elapsed
- Output for 4.4.1
- 0.002345 elapsed
- Output for 4.4.0
- 0.002719 elapsed
- Output for 4.3.11
- 0.001993 elapsed
- Output for 4.3.10
- 0.001704 elapsed
- Output for 4.3.9
- 0.001616 elapsed
- Output for 4.3.8
- 0.001683 elapsed
- Output for 4.3.7
- 0.001637 elapsed
- Output for 4.3.6
- 0.001406 elapsed
- Output for 4.3.5
- 0.001695 elapsed
- Output for 4.3.4
- 0.001515 elapsed
- Output for 4.3.3
- 0.001634 elapsed
- Output for 4.3.2
- 0.00292 elapsed
- Output for 4.3.1
- 0.001659 elapsed
- Output for 4.3.0
- 0.001509 elapsed
preferences:
159.2 ms | 401 KiB | 227 Q