3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types = 1); echo $a?->foo; echo $a?->foo ?? ''; echo isset($a?->foo); echo $a->foo; echo $a->foo ?? ''; echo isset($a->foo);

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)
8.4.120.0160.00418.22
8.4.110.0150.00420.68
8.4.100.0130.00817.57
8.4.90.0120.00820.32
8.4.80.0090.00820.55
8.4.70.0090.01020.42
8.4.60.0040.00522.25
8.4.50.0100.01118.80
8.4.40.0050.00317.56
8.4.30.0100.01020.18
8.4.20.0100.01018.15
8.4.10.0150.00423.68
8.3.250.0100.00916.75
8.3.240.0030.00516.78
8.3.230.0120.00816.74
8.3.220.0080.01220.45
8.3.210.0040.00416.59
8.3.200.0070.00216.60
8.3.190.0090.01016.91
8.3.180.0050.00316.87
8.3.170.0090.00918.78
8.3.160.0090.00916.91
8.3.150.0050.00316.63
8.3.140.0040.00416.76
8.3.130.0060.00318.48
8.3.120.0130.00319.05
8.3.110.0040.00416.77
8.3.100.0000.00816.70
8.3.90.0140.00026.77
8.3.80.0070.00316.50
8.3.70.0130.00616.63
8.3.60.0120.00316.50
8.3.50.0110.00418.45
8.3.40.0070.00720.33
8.3.30.0070.00719.04
8.3.20.0000.00824.18
8.3.10.0030.00524.66
8.3.00.0080.00026.16
8.2.290.0110.00816.91
8.2.280.0030.00618.53
8.2.270.0150.00317.30
8.2.260.0110.00716.72
8.2.250.0050.00316.75
8.2.240.0060.01318.21
8.2.230.0030.00520.94
8.2.220.0090.00024.06
8.2.210.0060.01326.77
8.2.200.0040.00816.50
8.2.190.0110.00716.63
8.2.180.0070.00725.92
8.2.170.0140.00418.78
8.2.160.0030.01022.96
8.2.150.0040.00425.66
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0030.00726.16
8.2.110.0110.00722.08
8.2.100.0110.00417.73
8.2.90.0080.00019.23
8.2.80.0050.00517.97
8.2.70.0030.00617.63
8.2.60.0000.00717.93
8.2.50.0030.00618.07
8.2.40.0040.00418.10
8.2.30.0060.00318.02
8.2.20.0040.00420.43
8.2.10.0070.00017.93
8.2.00.0000.00719.22
8.1.330.0120.00716.03
8.1.320.0070.01021.65
8.1.310.0070.01018.35
8.1.300.0080.00016.19
8.1.290.0030.00630.84
8.1.280.0070.00725.92
8.1.270.0070.00023.99
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0050.00522.76
8.1.230.0030.00917.50
8.1.220.0080.00017.74
8.1.210.0000.00818.77
8.1.200.0060.00317.22
8.1.190.0080.00017.10
8.1.180.0030.00618.10
8.1.170.0060.00318.34
8.1.160.0050.00318.81
8.1.150.0060.00318.43
8.1.140.0020.00517.26
8.1.130.0000.00818.80
8.1.120.0030.00517.34
8.1.110.0070.00017.25
8.1.100.0000.00817.37
8.1.90.0030.00617.33
8.1.80.0040.00417.23
8.1.70.0030.00617.31
8.1.60.0100.00717.49
8.1.50.0120.00617.30
8.1.40.0160.00317.32
8.1.30.0110.00717.57
8.1.20.0120.00717.57
8.1.10.0160.00317.35
8.1.00.0100.00817.34
8.0.300.0090.00018.77
8.0.290.0000.00916.63
8.0.280.0000.00718.38
8.0.270.0030.00316.78
8.0.260.0030.00318.27
8.0.250.0050.00516.93
8.0.240.0030.00316.88
8.0.230.0030.00316.92
8.0.220.0030.00316.79
8.0.210.0030.00316.79
8.0.200.0090.00316.83
8.0.190.0110.00516.88
8.0.180.0080.00416.81
8.0.170.0090.00716.84
8.0.160.0090.00616.80
8.0.150.0080.00716.68
8.0.140.0110.00316.68
8.0.130.0100.00616.72
8.0.120.0100.00716.81
8.0.110.0110.00516.72
8.0.100.0130.00316.85
8.0.90.0110.00416.83
8.0.80.0120.00316.79
8.0.70.0100.00616.77
8.0.60.0110.00516.73
8.0.50.0080.00516.77
8.0.30.0090.00516.81
8.0.20.0110.00316.89
8.0.10.0130.00316.88
7.4.330.0030.00315.55
7.4.320.0030.00316.40
7.4.300.0070.00316.39
7.4.290.0110.00316.32
7.4.280.0130.00316.35
7.4.270.0070.00916.27
7.4.260.0020.01116.39
7.4.250.0080.00416.24
7.4.240.0080.00416.34
7.4.230.0070.00616.31
7.4.220.0070.00516.30
7.4.210.0070.00416.34
7.4.200.0100.00316.17
7.4.190.0100.00316.35
7.4.180.0080.00716.41
7.4.160.0090.00616.54
7.4.150.0090.00416.30
7.4.140.0130.00216.16
7.4.130.0100.00316.16
7.4.120.0070.00716.16
7.4.110.0020.01216.17
7.4.100.0110.00516.36
7.4.90.0110.00416.19
7.4.80.0090.00516.10
7.4.70.0080.00516.27
7.4.60.0060.00716.23
7.4.50.0050.00716.11
7.4.40.0050.00616.10
7.4.30.0050.00716.24
7.4.20.0050.00616.14
7.4.10.0080.00516.17
7.4.00.0050.00716.25

preferences:
32.75 ms | 403 KiB | 5 Q