3v4l.org

run code in 300+ PHP versions simultaneously
<?php $word = "Hello World"; $revd = preg_replace_callback('#([A-Za-z]+)#', 'rev_first', $word); function rev_first($matches){ return strrev($matches[1]); } var_dump($revd);

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)
8.3.70.0210.00016.58
8.3.60.0070.00716.63
8.3.50.0130.00822.89
8.3.40.0040.01118.84
8.3.30.0090.00618.92
8.3.20.0040.00420.03
8.3.10.0040.00723.66
8.3.00.0080.00017.63
8.2.180.0040.01118.54
8.2.170.0120.00322.96
8.2.160.0040.01120.52
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0140.00426.16
8.2.120.0040.00421.02
8.2.110.0000.01022.32
8.2.100.0080.00318.09
8.2.90.0080.00019.07
8.2.80.0040.00417.97
8.2.70.0060.00317.88
8.2.60.0080.00017.93
8.2.50.0040.00418.07
8.2.40.0060.00320.20
8.2.30.0050.00318.02
8.2.20.0070.00017.70
8.2.10.0000.00718.14
8.2.00.0030.00517.77
8.1.280.0140.00425.92
8.1.270.0030.00622.23
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0100.00022.19
8.1.230.0120.00019.23
8.1.220.0050.00217.79
8.1.210.0000.00818.77
8.1.200.0090.00017.48
8.1.190.0060.00317.48
8.1.180.0040.00418.10
8.1.170.0000.00818.49
8.1.160.0040.00421.98
8.1.150.0070.00318.76
8.1.140.0040.00417.45
8.1.130.0070.00017.82
8.1.120.0000.00717.56
8.1.110.0000.00817.42
8.1.100.0000.00817.54
8.1.90.0000.00717.55
8.1.80.0030.00317.44
8.1.70.0030.00317.43
8.1.60.0040.00417.71
8.1.50.0030.00617.61
8.1.40.0040.00417.61
8.1.30.0080.00017.74
8.1.20.0030.00517.74
8.1.10.0000.00717.59
8.1.00.0040.00817.52
8.0.300.0000.00818.77
8.0.290.0000.00716.88
8.0.280.0040.00418.31
8.0.270.0030.00317.20
8.0.260.0030.00317.22
8.0.250.0000.00716.94
8.0.240.0050.00217.08
8.0.230.0070.00016.99
8.0.220.0030.00516.93
8.0.210.0040.00416.86
8.0.200.0030.00316.95
8.0.190.0040.00416.96
8.0.180.0060.00317.06
8.0.170.0040.00416.84
8.0.160.0080.00016.95
8.0.150.0030.00716.84
8.0.140.0070.00216.99
8.0.130.0050.00013.36
8.0.120.0000.00916.94
8.0.110.0040.00416.81
8.0.100.0040.00416.93
8.0.90.0070.00016.91
8.0.80.0090.00616.88
8.0.70.0000.00816.86
8.0.60.0080.00017.01
8.0.50.0040.00416.87
8.0.30.0130.00717.19
8.0.20.0120.01017.40
8.0.10.0040.00417.14
8.0.00.0080.01016.86
7.4.330.0000.00515.00
7.4.320.0030.00316.70
7.4.300.0000.00616.70
7.4.290.0030.00316.79
7.4.280.0080.00016.74
7.4.270.0030.00316.61
7.4.260.0000.00716.66
7.4.250.0000.00816.51
7.4.240.0030.00316.62
7.4.230.0030.00316.50
7.4.220.0090.00916.77
7.4.210.0110.00316.64
7.4.200.0040.00416.56
7.4.160.0070.01116.67
7.4.150.0060.01317.40
7.4.140.0100.00717.86
7.4.130.0100.00716.74
7.4.120.0160.00116.78
7.4.110.0120.00416.54
7.4.100.0140.00316.49
7.4.90.0090.00816.70
7.4.80.0120.00919.39
7.4.70.0140.00416.52
7.4.60.0130.01016.84
7.4.50.0070.00016.64
7.4.40.0100.00716.64
7.4.30.0030.01616.50
7.4.00.0030.01015.02
7.3.330.0030.00313.38
7.3.320.0050.00013.24
7.3.310.0050.00316.42
7.3.300.0000.00716.39
7.3.290.0150.00716.43
7.3.280.0100.00816.43
7.3.270.0180.00617.40
7.3.260.0160.00016.66
7.3.250.0030.01416.46
7.3.240.0090.01216.38
7.3.230.0080.00916.41
7.3.210.0190.00416.64
7.3.200.0130.00819.39
7.3.190.0140.00716.24
7.3.180.0000.01916.31
7.3.170.0190.02416.60
7.3.160.0090.00616.81
7.3.10.0150.00816.49
7.3.00.0110.00816.75
7.2.330.0130.01016.53
7.2.320.0180.00016.65
7.2.310.0100.01016.63
7.2.300.0030.01316.68
7.2.290.0090.00616.63
7.2.130.0130.00616.61
7.2.120.0030.01316.77
7.2.110.0170.00316.27
7.2.100.0190.01216.87
7.2.90.0000.01017.02
7.2.80.0150.01116.77
7.2.70.0140.00816.43
7.2.60.0070.00716.84
7.2.50.0130.00616.83
7.2.40.0130.00317.04
7.2.30.0140.01016.82
7.2.20.0110.00716.55
7.2.10.0060.00616.84
7.2.00.0040.01018.04
7.1.250.0000.01515.68
7.1.100.0030.00918.34
7.1.70.0060.00317.16
7.1.60.0160.00919.40
7.1.50.0110.01117.05
7.1.00.0000.08022.50
7.0.200.0120.00316.95
7.0.140.0070.07021.93
7.0.60.0100.08319.91
7.0.50.0100.04718.00
7.0.40.0300.07020.28
7.0.30.0330.05720.35
7.0.20.0330.06320.24
7.0.10.0030.09020.08
7.0.00.0100.04320.23
5.6.280.0030.07321.03
5.6.210.0200.05020.48
5.6.200.0030.07018.15
5.6.190.0100.07320.57
5.6.180.0470.06720.67
5.6.170.0330.07320.47
5.6.160.0030.04720.55
5.6.150.0000.08318.12
5.6.140.0070.08018.15
5.6.130.0030.08718.18
5.6.120.0000.05021.00
5.6.110.0100.07721.14
5.6.100.0100.07320.86
5.6.90.0200.06721.00
5.6.80.0100.07720.51
5.5.350.0070.07320.48
5.5.340.0070.07317.98
5.5.330.0130.07720.31
5.5.320.0200.04320.38
5.5.310.0200.03320.34
5.5.300.0000.09017.97
5.5.290.0030.04017.95
5.5.280.0000.04320.88
5.5.270.0170.07720.68
5.5.260.0070.05320.83
5.5.250.0100.08320.61
5.5.240.4230.04020.15
5.4.450.0330.04719.49
5.4.440.0270.04719.32
5.4.430.0300.04319.40
5.4.420.0130.04319.49
5.4.410.0230.03719.18
5.4.400.0530.03719.13
5.4.390.0030.05018.88
5.4.380.0170.05018.57
5.4.370.0100.05718.64
5.4.360.0130.05018.73
5.4.350.0130.05318.73
5.4.340.0230.06718.74
5.4.320.0040.04112.51
5.4.310.0090.03412.50
5.4.300.0080.04112.51
5.4.290.0070.04112.50
5.4.280.0080.03812.39
5.4.270.0090.03912.39
5.4.260.0080.03512.40
5.4.250.0080.04412.39
5.4.240.0060.04112.40
5.4.230.0060.03812.39
5.4.220.0070.03412.39
5.4.210.0070.03412.39
5.4.200.0030.04812.39
5.4.190.0060.03712.39
5.4.180.0050.03712.39
5.4.170.0060.03512.39
5.4.160.0090.04312.39
5.4.150.0070.03612.38
5.4.140.0080.03412.07
5.4.130.0040.03612.06
5.4.120.0060.03312.02
5.4.110.0020.03812.01
5.4.100.0080.03112.01
5.4.90.0030.03812.01
5.4.80.0050.04412.01
5.4.70.0060.04512.01
5.4.60.0080.03912.01
5.4.50.0070.03312.01
5.4.40.0040.03512.00
5.4.30.0060.03811.99
5.4.20.0060.03611.99
5.4.10.0100.03611.99
5.4.00.0040.03711.48
5.3.290.0100.04012.80
5.3.280.0060.04512.71
5.3.270.0050.04012.72
5.3.260.0080.03712.71
5.3.250.0090.03512.72
5.3.240.0050.03712.72
5.3.230.0070.04412.71
5.3.220.0070.03612.68
5.3.210.0070.04012.68
5.3.200.0070.04112.68
5.3.190.0080.03612.68
5.3.180.0100.03212.67
5.3.170.0050.03712.67
5.3.160.0080.04212.67
5.3.150.0060.03612.67
5.3.140.0070.04212.66
5.3.130.0060.04312.66
5.3.120.0080.03712.66
5.3.110.0050.04212.66
5.3.100.0070.03812.12
5.3.90.0040.03712.10
5.3.80.0060.03712.09
5.3.70.0050.04112.09
5.3.60.0040.03812.07
5.3.50.0060.03712.02
5.3.40.0060.03612.02
5.3.30.0050.04011.98
5.3.20.0060.03511.77
5.3.10.0080.03311.73
5.3.00.0070.05011.71
5.2.170.0040.0319.21
5.2.160.0040.0299.22
5.2.150.0030.0329.21
5.2.140.0070.0329.21
5.2.130.0050.0299.17
5.2.120.0030.0299.17
5.2.110.0060.0279.18
5.2.100.0040.0299.17
5.2.90.0070.0319.16
5.2.80.0060.0369.16
5.2.70.0030.0319.16
5.2.60.0040.0309.13
5.2.50.0070.0279.09
5.2.40.0060.0289.08
5.2.30.0050.0299.05
5.2.20.0040.0299.03
5.2.10.0020.0308.94
5.2.00.0060.0278.80
5.1.60.0070.0228.09
5.1.50.0070.0228.09
5.1.40.0040.0258.06
5.1.30.0030.0278.41
5.1.20.0030.0278.43
5.1.10.0060.0268.16
5.1.00.0040.0258.16
5.0.50.0010.0236.63
5.0.40.0020.0206.50
5.0.30.0060.0286.30
5.0.20.0020.0216.27
5.0.10.0020.0216.26
5.0.00.0030.0316.25
4.4.90.0020.0164.78
4.4.80.0030.0144.75
4.4.70.0040.0144.76
4.4.60.0050.0134.75
4.4.50.0010.0174.77
4.4.40.0020.0264.71
4.4.30.0030.0154.76
4.4.20.0050.0134.85
4.4.10.0010.0174.85
4.4.00.0030.0244.76
4.3.110.0020.0164.67
4.3.100.0020.0154.66
4.3.90.0040.0134.63
4.3.80.0020.0254.58
4.3.70.0060.0114.63
4.3.60.0030.0144.63
4.3.50.0030.0154.63
4.3.40.0020.0254.54
4.3.30.0050.0143.30
4.3.20.0010.0163.27
4.3.10.0030.0143.24
4.3.00.0100.02013.25

preferences:
44.28 ms | 401 KiB | 5 Q