3v4l.org

run code in 300+ PHP versions simultaneously
<?php $password = 'zzzzzzzzzz'; do { $hash = hash_hmac('sha512', ++$password, 'some key'); } while(strpos($hash, "\0") === false); echo $password;

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.70.0101.99216.63
8.3.60.0101.99218.43
8.3.50.0121.99221.02
8.3.40.0002.00318.68
8.3.30.0072.00020.17
8.3.20.0031.99920.21
8.3.10.0031.99822.05
8.3.00.0002.00322.46
8.2.180.0032.00116.63
8.2.170.0031.99922.96
8.2.160.0131.98822.13
8.2.150.0071.99724.18
8.2.140.0031.99824.66
8.2.130.0002.00426.16
8.2.120.0031.99820.75
8.2.110.0101.99220.57
8.2.100.0031.99917.78
8.2.90.0031.99917.50
8.2.80.0002.00318.63
8.2.70.0031.99917.80
8.2.60.0032.00317.75
8.2.50.0032.00018.10
8.2.40.0071.99519.36
8.2.30.0002.00319.19
8.2.20.0071.99917.80
8.2.10.0002.00417.75
8.2.00.0031.99817.82
8.1.280.0101.99325.92
8.1.270.0032.00023.99
8.1.260.0031.99826.35
8.1.250.0071.99528.09
8.1.240.0002.00320.24
8.1.230.0031.99917.83
8.1.220.0002.00217.76
8.1.210.0002.00218.77
8.1.200.0031.99917.23
8.1.190.0032.00417.41
8.1.180.0071.99418.10
8.1.170.0031.99818.46
8.1.160.0031.99618.75
8.1.150.0002.00318.75
8.1.140.0031.99917.50
8.1.130.0032.00017.76
8.1.120.0071.99817.45
8.1.110.0002.00417.46
8.1.100.0002.00417.36
8.1.90.0002.00217.34
8.1.80.0002.00317.48
8.1.70.0032.00017.35
8.1.60.0031.99817.57
8.1.50.0071.99717.49
8.1.40.0031.99917.51
8.1.30.0071.99817.51
8.1.20.0031.99817.46
8.1.10.0031.99817.40
8.1.00.0002.00417.36
8.0.300.0071.99618.77
8.0.290.0071.99916.58
8.0.280.0002.00118.32
8.0.270.0031.99817.12
8.0.260.0031.99618.32
8.0.250.0071.99416.79
8.0.240.0031.99916.68
8.0.230.0031.99716.75
8.0.220.0002.00416.65
8.0.210.0002.00216.78
8.0.200.0071.99516.81
8.0.190.0002.00416.84
8.0.180.0032.00116.78
8.0.170.0002.00316.80
8.0.160.0031.99816.74
8.0.150.0032.00116.68
8.0.140.0071.99616.75
8.0.130.0002.00413.26
8.0.120.0031.99516.65
8.0.110.0002.00316.64
8.0.100.0101.99116.57
8.0.90.0032.00016.61
8.0.80.0101.99216.76
8.0.70.0002.00216.68
8.0.60.0002.00216.73
8.0.50.0101.99116.59
8.0.30.0081.99016.88
8.0.20.0161.98517.40
8.0.10.0071.99416.94
8.0.00.0061.99916.50
7.4.330.0031.99816.79
7.4.320.0002.00316.36
7.4.300.0002.00316.52
7.4.290.0071.99616.35
7.4.280.0002.00316.28
7.4.270.0002.00216.51
7.4.260.0032.00013.23
7.4.250.0032.00016.32
7.4.240.0022.00216.48
7.4.230.0002.00216.28
7.4.220.0131.98816.45
7.4.210.0111.99016.47
7.4.200.0002.00416.46
7.4.190.0071.99516.54
7.4.160.0201.99516.38
7.4.150.0102.00917.40
7.4.140.0071.99217.86
7.4.130.0111.98416.41
7.4.120.0131.99316.44
7.4.110.0162.43316.46
7.4.100.0132.44716.30
7.4.90.0132.36716.23
7.4.80.0302.39719.39
7.4.70.0032.47816.40
7.4.60.0172.38916.48
7.4.50.0072.48916.27
7.4.40.0132.48222.77
7.4.30.0322.36216.27
7.3.330.0002.00413.03
7.3.320.0002.00613.03
7.3.310.0002.00216.02
7.3.300.0471.94916.05
7.3.290.0101.99216.07
7.3.280.0131.99016.06
7.3.270.0101.99117.40
7.3.260.0131.99316.48
7.3.250.0151.97716.19
7.3.240.0201.97616.03
7.3.230.0262.43216.39
7.3.210.0252.22116.29
7.3.200.0232.39119.39
7.3.190.0192.45116.39
7.3.180.0062.44316.41
7.3.170.0162.46216.27
7.3.160.0132.45016.28
7.2.330.0132.46316.50
7.2.320.0202.45116.46
7.2.310.0072.42416.36
7.2.300.0222.43516.68
7.2.290.0072.47116.27
7.2.90.0720.96314.49
7.2.80.0940.97414.59
7.1.210.0191.29313.44
7.1.200.0990.91613.76
7.0.310.0691.54913.68

preferences:
48.73 ms | 401 KiB | 5 Q