3v4l.org

run code in 300+ PHP versions simultaneously
<?php function callstacksayswhat() { var_dump(memory_get_peak_usage()); } function my_length(string $a): int { var_dump(memory_get_peak_usage()); return strlen($a); } $a = str_repeat("a", 100_000); callstacksayswhat(); echo "after init--------\n"; var_dump(memory_get_peak_usage()); my_length($a); my_length($a); my_length($a); my_length($a); my_length($a);

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)
8.5.30.0090.00819.52
8.5.20.0120.00619.43
8.5.10.0050.01220.18
8.5.00.0040.00520.09
8.4.180.0150.00822.47
8.4.170.0140.00720.69
8.4.160.0130.00820.66
8.4.150.0060.00716.93
8.4.140.0070.00617.47
8.4.130.0100.01018.75
8.4.120.0090.00819.03
8.4.110.0140.00818.72
8.4.100.0100.01117.68
8.4.90.0080.01120.59
8.4.80.0020.00618.81
8.4.70.0070.00417.99
8.4.60.0070.00719.04
8.4.50.0100.01218.79
8.4.40.0130.00720.52
8.4.30.0000.00820.59
8.4.20.0030.01325.82
8.4.10.0090.00623.80
8.3.300.0110.00919.21
8.3.290.0130.00820.96
8.3.280.0160.00418.50
8.3.270.0090.01416.53
8.3.260.0160.00416.88
8.3.250.0110.00816.67
8.3.240.0120.00716.52
8.3.230.0090.01016.50
8.3.220.0130.00520.69
8.3.210.0130.00618.30
8.3.200.0040.00516.56
8.3.190.0100.01016.93
8.3.180.0140.00517.25
8.3.170.0120.00618.74
8.3.160.0080.00617.14
8.3.150.0030.01616.90
8.3.140.0110.00716.52
8.3.130.0090.01218.23
8.3.120.0150.00420.67
8.3.110.0050.00520.94
8.3.100.0100.01018.28
8.3.90.0110.00326.77
8.3.80.0060.00317.97
8.3.70.0030.01218.04
8.3.60.0180.00316.38
8.3.50.0070.01516.41
8.3.40.0070.00720.41
8.3.30.0180.00418.75
8.3.20.0050.00324.18
8.3.10.0070.00024.66
8.3.00.0000.00826.16
8.2.300.0140.00820.31
8.2.290.0110.00817.33
8.2.280.0060.00218.52
8.2.270.0150.00417.32
8.2.260.0040.00416.52
8.2.250.0090.00618.55
8.2.240.0120.00318.83
8.2.230.0040.00422.58
8.2.220.0100.00024.06
8.2.210.0060.00326.77
8.2.200.0030.00618.54
8.2.190.0170.00318.42
8.2.180.0160.00616.63
8.2.170.0170.00019.08
8.2.160.0130.00722.96
8.2.150.0040.00425.66
8.2.140.0000.00824.66
8.2.130.0080.00026.16
8.2.120.0080.00019.83
8.2.110.0070.00420.93
8.2.100.0040.00818.22
8.2.90.0030.00617.88
8.2.80.0030.00618.95
8.2.70.0060.00317.75
8.2.60.0040.00417.75
8.2.50.0050.00217.75
8.2.40.0050.00320.94
8.2.30.0000.00717.94
8.2.20.0050.00319.32
8.2.10.0000.00717.96
8.2.00.0120.00417.69
8.1.340.0130.01122.13
8.1.330.0110.00716.21
8.1.320.0120.00718.18
8.1.310.0040.01116.97
8.1.300.0040.00420.14
8.1.290.0080.00030.84
8.1.280.0070.01125.92
8.1.270.0080.00024.66
8.1.260.0030.00626.35
8.1.250.0060.00328.09
8.1.240.0090.00022.26
8.1.230.0120.00021.10
8.1.220.0090.00018.46
8.1.210.0030.00618.77
8.1.200.0040.00417.35
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0080.00018.46
8.1.160.0040.00419.00
8.1.150.0080.00018.58
8.1.140.0060.00317.39
8.1.130.0120.00417.50
8.1.120.0040.01217.43
8.1.110.0160.00017.53
8.1.100.0100.00717.53
8.1.90.0090.00617.36
8.1.80.0110.00417.46
8.1.70.0110.00417.48
8.1.60.0090.00917.66
8.1.50.0180.00017.45
8.1.40.0140.00417.57
8.1.30.0070.01117.67
8.1.20.0110.00817.75
8.1.10.0200.00017.61
8.1.00.0180.00017.57
8.0.300.0030.00618.77
8.0.290.0080.00016.88
8.0.280.0070.00018.41
8.0.270.0000.00717.26
8.0.260.0080.00516.74
8.0.250.0070.00316.79
8.0.240.0090.00316.77
8.0.230.0050.00516.83
8.0.220.0030.00816.88
8.0.210.0070.00416.68
8.0.200.0000.01016.88
8.0.190.0140.00016.84
8.0.180.0070.00316.89
8.0.170.0070.00316.87
8.0.160.0120.00016.71
8.0.150.0120.00016.65
8.0.140.0060.00316.70
8.0.130.0110.00016.77
8.0.120.0110.00016.75
8.0.110.0070.00316.70
8.0.100.0040.00416.64
8.0.90.0100.00016.77
8.0.80.0030.00816.78
8.0.70.0050.00516.82
8.0.60.0100.00016.68
8.0.50.0050.00516.77
8.0.30.0050.00516.70
8.0.20.0000.00916.82
8.0.10.0000.00816.81

preferences:
48.27 ms | 1111 KiB | 5 Q