3v4l.org

run code in 300+ PHP versions simultaneously
<?php function my_length1(string $a): int { $a[0] = 'f'; var_dump(memory_get_peak_usage()); return strlen($a); } $a = str_repeat("a", 100_000); var_dump(memory_get_peak_usage()); my_length1($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)
8.5.30.0130.00419.61
8.5.20.0070.01119.84
8.5.10.0110.00720.16
8.5.00.0050.00419.98
8.4.180.0130.00922.13
8.4.170.0110.01124.00
8.4.160.0110.01024.05
8.4.150.0090.00516.96
8.4.140.0140.00817.80
8.4.130.0130.00817.88
8.4.120.0130.00720.75
8.4.110.0140.00622.58
8.4.100.0140.00619.40
8.4.90.0140.00618.76
8.4.80.0090.01018.06
8.4.70.0060.00618.36
8.4.60.0110.00918.89
8.4.50.0140.00718.82
8.4.40.0090.00920.61
8.4.30.0000.00920.80
8.4.20.0140.00425.98
8.4.10.0060.00323.90
8.3.300.0130.00720.88
8.3.290.0090.01121.09
8.3.280.0100.01018.52
8.3.270.0150.00716.85
8.3.260.0090.00916.94
8.3.250.0110.00818.92
8.3.240.0140.00517.23
8.3.230.0140.00616.98
8.3.220.0090.00517.33
8.3.210.0110.01016.77
8.3.200.0030.00616.76
8.3.190.0050.00418.96
8.3.180.0100.01016.82
8.3.170.0100.00019.01
8.3.160.0120.00617.27
8.3.150.0170.00316.97
8.3.140.0140.00416.55
8.3.130.0060.00316.87
8.3.120.0070.00318.96
8.3.110.0000.00816.64
8.3.100.0030.00618.59
8.3.90.0120.00626.77
8.3.80.0030.00618.43
8.3.70.0130.00616.88
8.3.60.0200.00316.63
8.3.50.0110.00718.19
8.3.40.0060.00920.39
8.3.30.0170.00318.79
8.3.20.0040.00424.18
8.3.10.0000.00724.66
8.3.00.0080.00026.16
8.2.300.0140.00618.86
8.2.290.0110.00820.71
8.2.280.0110.00718.82
8.2.270.0140.00417.53
8.2.260.0130.00616.52
8.2.250.0060.00318.39
8.2.240.0000.00817.30
8.2.230.0050.00520.94
8.2.220.0100.00024.06
8.2.210.0060.00326.77
8.2.200.0030.00618.41
8.2.190.0000.01518.16
8.2.180.0070.00716.88
8.2.170.0070.00719.04
8.2.160.0170.00322.96
8.2.150.0040.00425.66
8.2.140.0050.00324.66
8.2.130.0080.00026.16
8.2.120.0000.00826.16
8.2.110.0070.00320.64
8.2.100.0090.00318.03
8.2.90.0000.00817.97
8.2.80.0000.00817.88
8.2.70.0080.00017.75
8.2.60.0030.00619.78
8.2.50.0040.00418.07
8.2.40.0000.00921.07
8.2.30.0000.00718.19
8.2.20.0070.00019.54
8.2.10.0080.00018.18
8.2.00.0170.00317.68
8.1.340.0090.01119.94
8.1.330.0090.01021.90
8.1.320.0110.00816.19
8.1.310.0130.00716.95
8.1.300.0080.00017.23
8.1.290.0050.00530.84
8.1.280.0150.00625.92
8.1.270.0080.00024.66
8.1.260.0080.00026.35
8.1.250.0030.00528.09
8.1.240.0030.00722.44
8.1.230.0060.00621.29
8.1.220.0000.00817.91
8.1.210.0060.00319.28
8.1.200.0070.00317.60
8.1.190.0060.00317.73
8.1.180.0030.00618.10
8.1.170.0000.00918.80
8.1.160.0000.00719.16
8.1.150.0050.00318.86
8.1.140.0070.00417.51
8.1.130.0110.00717.61
8.1.120.0100.00817.63
8.1.110.0160.00317.65
8.1.100.0120.00519.25
8.1.90.0110.00717.59
8.1.80.0120.00617.58
8.1.70.0110.00617.55
8.1.60.0160.00417.79
8.1.50.0200.00017.64
8.1.40.0140.00517.79
8.1.30.0150.00517.85
8.1.20.0190.00017.80
8.1.10.0210.00017.64
8.1.00.0150.00617.61
8.0.300.0000.00820.23
8.0.290.0040.00417.00
8.0.280.0030.00318.54
8.0.270.0080.00017.45
8.0.260.0100.00316.89
8.0.250.0110.00017.03
8.0.240.0130.00016.95
8.0.230.0120.00018.71
8.0.220.0060.00616.95
8.0.210.0110.00016.81
8.0.200.0110.00017.02
8.0.190.0120.00317.00
8.0.180.0030.00817.03
8.0.170.0120.00016.90
8.0.160.0090.00516.98
8.0.150.0090.00416.82
8.0.140.0120.00016.96
8.0.130.0080.00416.84
8.0.120.0050.00716.89
8.0.110.0040.00816.91
8.0.100.0070.00316.91
8.0.90.0050.00516.98
8.0.80.0080.00518.46
8.0.70.0100.00016.92
8.0.60.0080.00318.55
8.0.50.0080.00318.52
8.0.30.0040.00816.80
8.0.20.0080.00316.98
8.0.10.0070.00417.05

preferences:
65.29 ms | 1107 KiB | 5 Q