3v4l.org

run code in 500+ PHP versions simultaneously
<?php $array = range(1, 10000); $start_time = microtime(true); $start_memory = memory_get_peak_usage(true); reset($array); while(next($array)){ $array[key($array)] = 'foo'; } $end_time = microtime(true); $end_memory = memory_get_peak_usage(true); echo "Time: " . ($end_time - $start_time) . PHP_EOL; echo "Memory: " . ($end_memory - $start_memory) . PHP_EOL;
Output for 7.2.0
Time: 0.00055503845214844 Memory: 0
Output for 7.1.7
Time: 0.001338005065918 Memory: 0
Output for 7.1.6
Time: 0.0010819435119629 Memory: 0
Output for 7.1.5
Time: 0.0011889934539795 Memory: 0
Output for 7.1.0
Time: 0.00086307525634766 Memory: 0
Output for 7.0.20
Time: 0.00063705444335938 Memory: 0
Output for 7.0.14
Time: 0.00056314468383789 Memory: 0
Output for 7.0.6
Time: 0.0005650520324707 Memory: 0
Output for 7.0.5
Time: 0.00073599815368652 Memory: 0
Output for 7.0.4
Time: 0.00049519538879395 Memory: 0
Output for 7.0.3
Time: 0.00063800811767578 Memory: 0
Output for 7.0.2
Time: 0.00044989585876465 Memory: 0
Output for 7.0.1
Time: 0.00068902969360352 Memory: 0
Output for 7.0.0
Time: 0.00074601173400879 Memory: 0
Output for 5.6.28
Time: 0.0030238628387451 Memory: 0
Output for 5.6.21
Time: 0.0017631053924561 Memory: 0
Output for 5.6.20
Time: 0.001446008682251 Memory: 0
Output for 5.6.19
Time: 0.0014359951019287 Memory: 0
Output for 5.6.18
Time: 0.0017838478088379 Memory: 0
Output for 5.6.17
Time: 0.0018060207366943 Memory: 0
Output for 5.6.16
Time: 0.0019989013671875 Memory: 0
Output for 5.6.15
Time: 0.0021660327911377 Memory: 0
Output for 5.6.14
Time: 0.001554012298584 Memory: 0
Output for 5.6.13
Time: 0.0022718906402588 Memory: 0
Output for 5.6.12
Time: 0.0022459030151367 Memory: 0
Output for 5.6.11
Time: 0.0027778148651123 Memory: 0
Output for 5.6.10
Time: 0.0015361309051514 Memory: 0
Output for 5.6.9
Time: 0.0021860599517822 Memory: 0
Output for 5.6.8
Time: 0.0022058486938477 Memory: 0
Output for 5.5.35
Time: 0.0015871524810791 Memory: 0
Output for 5.5.34
Time: 0.0022361278533936 Memory: 0
Output for 5.5.33
Time: 0.001582145690918 Memory: 0
Output for 5.5.32
Time: 0.0020430088043213 Memory: 0
Output for 5.5.31
Time: 0.0022120475769043 Memory: 0
Output for 5.5.30
Time: 0.0016410350799561 Memory: 0
Output for 5.5.29
Time: 0.0024881362915039 Memory: 0
Output for 5.5.28
Time: 0.0016980171203613 Memory: 0
Output for 5.5.27
Time: 0.0015511512756348 Memory: 0
Output for 5.5.26
Time: 0.0023751258850098 Memory: 0
Output for 5.5.25
Time: 0.0019161701202393 Memory: 0
Output for 5.5.24
Time: 0.0024490356445312 Memory: 0
Output for 5.4.45
Time: 0.0043401718139648 Memory: 0
Output for 5.4.44
Time: 0.0026729106903076 Memory: 0
Output for 5.4.43
Time: 0.0026600360870361 Memory: 0
Output for 5.4.42
Time: 0.0026650428771973 Memory: 0
Output for 5.4.41
Time: 0.0026700496673584 Memory: 0
Output for 5.4.3, 5.4.40
Time: 0.002871036529541 Memory: 0
Output for 5.4.39
Time: 0.0033280849456787 Memory: 0
Output for 5.4.38
Time: 0.0030481815338135 Memory: 0
Output for 5.4.37
Time: 0.0030441284179688 Memory: 0
Output for 5.4.36
Time: 0.0049021244049072 Memory: 0
Output for 5.4.35
Time: 0.0029850006103516 Memory: 0
Output for 5.4.34
Time: 0.0028800964355469 Memory: 0
Output for 5.4.32
Time: 0.0028531551361084 Memory: 0
Output for 5.4.31
Time: 0.0027549266815186 Memory: 0
Output for 5.4.30
Time: 0.0027010440826416 Memory: 0
Output for 5.4.29
Time: 0.0037250518798828 Memory: 0
Output for 5.4.28
Time: 0.0050091743469238 Memory: 0
Output for 5.4.27
Time: 0.0029230117797852 Memory: 0
Output for 5.4.26
Time: 0.002708911895752 Memory: 0
Output for 5.4.25
Time: 0.0028681755065918 Memory: 0
Output for 5.4.24
Time: 0.0051989555358887 Memory: 0
Output for 5.4.23
Time: 0.003058910369873 Memory: 0
Output for 5.4.22
Time: 0.0028128623962402 Memory: 0
Output for 5.4.21
Time: 0.0047268867492676 Memory: 0
Output for 5.4.20
Time: 0.0028581619262695 Memory: 0
Output for 5.4.19
Time: 0.0028059482574463 Memory: 0
Output for 5.4.18
Time: 0.0049839019775391 Memory: 0
Output for 5.4.17
Time: 0.0031769275665283 Memory: 0
Output for 5.4.16
Time: 0.0032479763031006 Memory: 0
Output for 5.4.15
Time: 0.0031230449676514 Memory: 0
Output for 5.4.14
Time: 0.0027828216552734 Memory: 0
Output for 5.4.13
Time: 0.002918004989624 Memory: 0
Output for 5.4.12
Time: 0.0028731822967529 Memory: 0
Output for 5.4.11
Time: 0.0032100677490234 Memory: 0
Output for 5.4.10
Time: 0.0030279159545898 Memory: 0
Output for 5.4.9
Time: 0.0035309791564941 Memory: 0
Output for 5.4.8
Time: 0.0046639442443848 Memory: 0
Output for 5.4.7
Time: 0.0029711723327637 Memory: 0
Output for 5.4.6
Time: 0.0027990341186523 Memory: 0
Output for 5.4.5
Time: 0.0028231143951416 Memory: 0
Output for 5.4.4
Time: 0.0028338432312012 Memory: 0
Output for 5.4.2
Time: 0.0028588771820068 Memory: 0
Output for 5.4.1
Time: 0.0027070045471191 Memory: 0
Output for 5.4.0
Time: 0.003242015838623 Memory: 0
Output for 5.3.29
Time: 0.0041050910949707 Memory: 262144
Output for 5.3.28
Time: 0.0036399364471436 Memory: 262144
Output for 5.3.27
Time: 0.0036180019378662 Memory: 262144
Output for 5.3.26
Time: 0.0036461353302002 Memory: 262144
Output for 5.3.25
Time: 0.0037732124328613 Memory: 262144
Output for 5.3.24
Time: 0.0034949779510498 Memory: 262144
Output for 5.3.23
Time: 0.0034809112548828 Memory: 262144
Output for 5.3.22
Time: 0.0038630962371826 Memory: 262144
Output for 5.3.21
Time: 0.0048789978027344 Memory: 262144
Output for 5.3.20
Time: 0.0036220550537109 Memory: 262144
Output for 5.3.19
Time: 0.0036909580230713 Memory: 262144
Output for 5.3.18
Time: 0.0046141147613525 Memory: 262144
Output for 5.3.17
Time: 0.0042510032653809 Memory: 262144
Output for 5.3.16
Time: 0.0065028667449951 Memory: 262144
Output for 5.3.15
Time: 0.0060050487518311 Memory: 262144
Output for 5.3.14
Time: 0.0040240287780762 Memory: 262144
Output for 5.3.13
Time: 0.0047199726104736 Memory: 262144
Output for 5.3.12
Time: 0.0041029453277588 Memory: 262144
Output for 5.3.11
Time: 0.0069339275360107 Memory: 262144
Output for 5.3.10
Time: 0.0061359405517578 Memory: 262144
Output for 5.3.9
Time: 0.0035810470581055 Memory: 262144
Output for 5.3.8
Time: 0.0063190460205078 Memory: 262144
Output for 5.3.7
Time: 0.0044379234313965 Memory: 262144
Output for 5.3.6
Time: 0.0046548843383789 Memory: 262144
Output for 5.3.5
Time: 0.0040559768676758 Memory: 262144
Output for 5.3.4
Time: 0.0064499378204346 Memory: 262144
Output for 5.3.3
Time: 0.0038938522338867 Memory: 262144
Output for 5.3.2
Time: 0.0035889148712158 Memory: 262144
Output for 5.3.1
Time: 0.0035970211029053 Memory: 262144
Output for 5.3.0
Time: 0.003939151763916 Memory: 262144
Output for 5.2.17
Time: 0.0065298080444336 Memory: 262144
Output for 5.2.16
Time: 0.0039200782775879 Memory: 262144
Output for 5.2.15
Time: 0.004741907119751 Memory: 262144
Output for 5.2.14
Time: 0.0062828063964844 Memory: 262144
Output for 5.2.13
Time: 0.0040469169616699 Memory: 262144
Output for 5.2.12
Time: 0.0061581134796143 Memory: 262144
Output for 5.2.11
Time: 0.0040569305419922 Memory: 262144
Output for 5.2.10
Time: 0.003856897354126 Memory: 262144
Output for 5.2.9
Time: 0.0038688182830811 Memory: 262144
Output for 5.2.8
Time: 0.0041229724884033 Memory: 262144
Output for 5.2.7
Time: 0.0040380954742432 Memory: 262144
Output for 5.2.6
Time: 0.0038261413574219 Memory: 262144
Output for 5.2.5
Time: 0.0043058395385742 Memory: 262144
Output for 5.2.4
Time: 0.0039980411529541 Memory: 262144
Output for 5.2.3
Time: 0.0045340061187744 Memory: 262144
Output for 5.2.2
Time: 0.0042181015014648 Memory: 262144
Output for 5.2.1
Time: 0.0036060810089111 Memory: 262144
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
Fatal error: Call to undefined function memory_get_peak_usage() in /in/1NAaN on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: memory_get_peak_usage() in /in/1NAaN on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: memory_get_peak_usage() in /in/1NAaN on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: memory_get_peak_usage() in /in/1NAaN on line 5

preferences:
61.95 ms | 1193 KiB | 4 Q