3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 0; $i < 16; $i++) { var_dump(method($i) . "\t" . method1($i) . "\t" . pow(2, $i-1)); } function method($n) { if ($n <= 0) return 0; if ($n == 1) return 1; if ($n == 2) return 2; if ($n == 3) return 4; return method($n - 1) + method($n - 2) + method($n - 3); } function method1($n) { if ($n <= 0) return 0; $r = 1; for ($i = 0; $i < $n; $i++) { $r += method1($i); } return $r; }

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)
8.3.70.0160.00317.13
8.3.60.0040.01918.28
8.3.50.0170.01222.30
8.3.40.0130.01319.04
8.3.30.0110.00718.97
8.3.20.0080.01119.46
8.3.10.0110.01122.23
8.3.00.0060.00319.93
8.2.190.0070.01416.58
8.2.180.0170.01416.73
8.2.170.0100.01322.96
8.2.160.0140.00319.38
8.2.150.0040.00724.18
8.2.140.0140.00624.66
8.2.130.0030.00722.63
8.2.120.0050.00526.35
8.2.110.0090.00321.44
8.2.100.0000.01518.34
8.2.90.0030.00721.40
8.2.80.0030.00618.05
8.2.70.0030.00718.18
8.2.60.0040.00718.28
8.2.50.0030.00618.18
8.2.40.0060.00320.82
8.2.30.0000.01019.36
8.2.20.0070.00418.32
8.2.10.0030.00618.25
8.2.00.0050.00518.41
8.1.280.0070.01125.92
8.1.270.0030.00624.22
8.1.260.0000.00926.35
8.1.250.0030.00628.09
8.1.240.0030.00922.30
8.1.230.0090.00524.07
8.1.220.0030.00717.91
8.1.210.0070.00418.77
8.1.200.0080.00317.50
8.1.190.0000.01017.35
8.1.180.0070.00418.10
8.1.170.0100.00018.75
8.1.160.0060.00319.18
8.1.150.0030.00620.29
8.1.140.0060.00319.73
8.1.130.0000.00919.18
8.1.120.0030.00617.63
8.1.110.0000.01017.73
8.1.100.0030.00717.68
8.1.90.0030.00617.65
8.1.80.0050.00517.58
8.1.70.0050.00517.71
8.1.60.0040.00717.80
8.1.50.0070.00317.77
8.1.40.0060.00617.73
8.1.30.0070.00317.81
8.1.20.0030.00717.84
8.1.10.0070.00317.71
8.1.00.0030.00817.61
8.0.300.0030.01019.92
8.0.290.0000.00917.00
8.0.280.0050.00518.73
8.0.270.0000.00917.50
8.0.260.0090.00319.17
8.0.250.0030.00617.24
8.0.240.0040.00817.19
8.0.230.0060.00317.07
8.0.220.0000.01017.15
8.0.210.0060.00317.04
8.0.200.0000.00917.10
8.0.190.0090.00317.18
8.0.180.0080.00217.09
8.0.170.0030.00617.11
8.0.160.0040.00717.13
8.0.150.0070.00317.07
8.0.140.0040.00717.07
8.0.130.0050.00513.64
8.0.120.0030.00617.11
8.0.110.0000.01017.11
8.0.100.0030.00716.99
8.0.90.0030.00716.90
8.0.80.0030.02217.02
8.0.70.0040.00717.00
8.0.60.0060.00317.00
8.0.50.0100.00017.17
8.0.30.0090.01117.14
8.0.20.0120.01117.43
8.0.10.0000.01117.23
8.0.00.0160.00916.96
7.4.330.0030.00715.55
7.4.320.0030.00616.93
7.4.300.0030.00616.75
7.4.290.0060.00316.82
7.4.280.0030.00616.86
7.4.270.0030.00616.69
7.4.260.0030.00916.77
7.4.250.0000.01016.67
7.4.240.0040.00716.95
7.4.230.0040.00816.65
7.4.220.0060.01916.77
7.4.210.0060.01316.71
7.4.200.0030.00716.84
7.4.160.0070.01416.70
7.4.150.0100.01317.40
7.4.140.0080.01617.86
7.4.130.0160.00516.76
7.4.120.0110.01516.71
7.4.110.0150.00916.86
7.4.100.0070.01516.58
7.4.90.0180.00316.52
7.4.80.0060.02219.39
7.4.70.0180.00316.72
7.4.60.0130.00716.55
7.4.50.0120.00616.83
7.4.40.0090.01216.63
7.4.30.0080.02216.58
7.4.00.0040.01815.07
7.3.330.0030.00513.40
7.3.320.0030.00613.41
7.3.310.0040.00716.66
7.3.300.0000.00916.59
7.3.290.0090.01316.46
7.3.280.0080.01516.47
7.3.270.0120.00917.40
7.3.260.0140.00816.72
7.3.240.0050.02216.70
7.3.230.0070.01716.60
7.3.210.0090.01316.46
7.3.200.0090.01216.57
7.3.190.0060.01816.52
7.3.180.0030.02316.47
7.3.170.0000.02116.84
7.3.160.0130.00616.71
7.3.120.0100.01315.10
7.3.110.0100.01315.22
7.3.100.0140.01014.78
7.3.90.0100.01315.00
7.3.80.0120.00614.93
7.3.70.0040.01815.13
7.3.60.0070.01415.19
7.3.50.0120.00914.89
7.3.40.0070.01714.87
7.3.30.0000.02315.05
7.3.20.0120.00917.04
7.3.10.0000.01816.75
7.3.00.0030.01616.74
7.2.330.0130.01016.90
7.2.320.0100.01716.89
7.2.310.0100.01316.68
7.2.300.0070.01616.90
7.2.290.0120.01216.89
7.2.240.0070.01715.16
7.2.230.0090.01515.16
7.2.220.0070.01715.38
7.2.210.0060.01515.54
7.2.200.0070.01415.16
7.2.190.0070.01415.17
7.2.180.0120.00915.46
7.2.170.0070.01715.02
7.2.160.0000.02415.21
7.2.150.0120.00617.29
7.2.140.0070.01416.90
7.2.130.0070.01017.00
7.2.120.0070.01716.88
7.2.110.0030.01616.88
7.2.100.0030.01717.14
7.2.90.0140.00617.19
7.2.80.0040.01617.00
7.2.70.0030.01316.85
7.2.60.0070.01716.96
7.2.50.0000.01916.98
7.2.40.0060.00916.93
7.2.30.0030.01617.18
7.2.20.0060.01617.39
7.2.10.0100.01017.15
7.2.00.0030.01617.03
7.1.330.0070.01715.93
7.1.320.0130.01415.80
7.1.310.0100.01616.11
7.1.300.0000.01915.93
7.1.290.0100.01716.29
7.1.280.0000.01916.00
7.1.270.0080.01516.01
7.1.260.0000.02815.90
7.1.250.0000.02816.07
7.1.70.0070.01317.32
7.1.60.0030.01517.50
7.1.50.0040.01116.88
7.1.40.0030.01216.68
7.1.30.0030.01216.85
7.1.20.0030.01117.00
7.1.10.0070.01016.82
7.1.00.0060.01317.04
7.0.200.0040.00717.05
7.0.190.0000.01316.96
7.0.180.0050.00516.50
7.0.170.0100.01016.57
7.0.160.0000.01216.51
7.0.150.0040.00816.82
7.0.140.0080.00416.52
7.0.130.0040.00716.59
7.0.120.0000.01416.80
7.0.110.0030.01316.65
7.0.100.0070.01316.57
7.0.90.0000.01116.68
7.0.80.0000.01316.59
7.0.70.0000.01816.41
7.0.60.0020.01016.18
7.0.50.0000.02116.54
7.0.40.0000.01514.79
7.0.30.0070.00714.79
7.0.20.0030.02014.79
7.0.10.0030.01014.79
7.0.00.0000.01314.79

preferences:
50.45 ms | 401 KiB | 5 Q