3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ""; for($i=0;$i<100;$i++) { $a = strtolower(strtoupper(implode(array_merge(str_split($a), range("a", "z"))))); }

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)
8.3.60.0100.02016.75
8.3.50.0070.01917.31
8.3.40.0130.00718.77
8.3.30.0170.00718.79
8.3.20.0040.00718.95
8.3.10.0060.00620.42
8.3.00.0080.00319.13
8.2.180.0090.01616.88
8.2.170.0070.02322.96
8.2.160.0080.01222.13
8.2.150.0070.00424.18
8.2.140.0000.01124.66
8.2.130.0000.01126.16
8.2.120.0030.00719.73
8.2.110.0130.01020.66
8.2.100.0080.00817.72
8.2.90.0060.00618.47
8.2.80.0000.01118.13
8.2.70.0040.00817.63
8.2.60.0000.01217.93
8.2.50.0060.00618.07
8.2.40.0040.00718.41
8.2.30.0040.00718.28
8.2.20.0030.00917.75
8.2.10.0040.00817.92
8.2.00.0000.01117.96
8.1.280.0060.02225.92
8.1.270.0000.01123.99
8.1.260.0060.00626.35
8.1.250.0070.00428.09
8.1.240.0030.01122.58
8.1.230.0100.01321.29
8.1.220.0030.00918.02
8.1.210.0060.00619.10
8.1.200.0000.01317.60
8.1.190.0080.00417.77
8.1.180.0060.00618.10
8.1.170.0000.01119.14
8.1.160.0040.00719.13
8.1.150.0040.00718.92
8.1.140.0000.01217.79
8.1.130.0000.01218.21
8.1.120.0030.00817.85
8.1.110.0040.00717.71
8.1.100.0000.01117.67
8.1.90.0000.01117.80
8.1.80.0070.00417.69
8.1.70.0000.01117.76
8.1.60.0030.01017.86
8.1.50.0040.00817.78
8.1.40.0000.01417.83
8.1.30.0000.01318.00
8.1.20.0100.00317.98
8.1.10.0040.00817.71
8.1.00.0030.00917.80
8.0.300.0080.00420.36
8.0.290.0060.00617.00
8.0.280.0000.01018.71
8.0.270.0030.00717.57
8.0.260.0030.00717.05
8.0.250.0000.01117.29
8.0.240.0070.00717.18
8.0.230.0050.00517.27
8.0.220.0040.00817.13
8.0.210.0040.00717.10
8.0.200.0030.01217.26
8.0.190.0030.00917.28
8.0.180.0000.01217.29
8.0.170.0070.00717.11
8.0.160.0000.01217.17
8.0.150.0030.01017.12
8.0.140.0030.00917.07
8.0.130.0050.00513.65
8.0.120.0040.00817.13
8.0.110.0000.01417.04
8.0.100.0000.01217.09
8.0.90.0040.00817.23
8.0.80.0070.01617.18
8.0.70.0030.00917.12
8.0.60.0030.00917.04
8.0.50.0030.01017.08
8.0.30.0080.02217.40
8.0.20.0100.01817.23
8.0.10.0040.00817.32
8.0.00.0070.01816.97
7.4.330.0030.00613.32
7.4.320.0000.01016.97
7.4.300.0000.01016.92
7.4.290.0000.01216.75
7.4.280.0030.01216.69
7.4.270.0030.01016.94
7.4.260.0060.00613.61
7.4.250.0000.01216.81
7.4.240.0060.00616.81
7.4.230.0000.01116.82
7.4.220.0130.01316.77
7.4.210.0060.01916.84
7.4.200.0040.00816.80
7.4.190.0090.00316.98
7.4.160.0100.01316.93
7.4.150.0170.01016.68
7.4.140.0140.01516.75
7.4.130.0120.01616.90
7.4.120.0070.01616.82
7.4.110.0070.01716.82
7.4.100.0100.01416.75
7.4.90.0140.01116.67
7.4.80.0100.02116.66
7.4.70.0030.02016.59
7.4.60.0130.02016.94
7.4.50.0000.00716.77
7.4.40.0060.01616.63
7.4.30.0120.01216.80
7.4.00.0030.02215.34
7.3.330.0000.01113.55
7.3.320.0000.01013.55
7.3.310.0060.00616.71
7.3.300.0060.00616.60
7.3.290.0150.01816.62
7.3.280.0080.01516.67
7.3.270.0090.01516.93
7.3.260.0100.01517.01
7.3.250.0090.01516.72
7.3.240.0070.02416.89
7.3.230.0100.01317.01
7.3.210.0090.01616.73
7.3.200.0080.02419.39
7.3.190.0170.01416.77
7.3.180.0060.01616.82
7.3.170.0160.00616.67
7.3.160.0060.01716.72
7.3.120.0030.02015.35
7.2.330.0130.02016.93
7.2.320.0030.02316.98
7.2.310.0190.01616.91
7.2.300.0070.01816.75
7.2.290.0100.02016.96
7.2.00.0000.02019.26
7.1.200.0000.02015.79
7.1.100.0040.01518.11
7.1.70.0060.01216.93
7.1.60.0100.02619.40
7.1.50.0070.02317.06
7.1.00.0000.08722.41
7.0.200.0330.01015.29
7.0.140.0000.08322.17
7.0.120.0070.08021.96
7.0.60.0070.08720.40
7.0.50.0030.09718.28
7.0.40.0100.04320.24
7.0.30.0400.08020.21
7.0.20.0330.08320.00
7.0.10.0070.04320.13
7.0.00.0030.09720.30
5.6.280.0100.10021.52
5.6.210.0070.11021.34
5.6.200.0000.06318.63
5.6.190.0000.06720.83
5.6.180.0330.10320.86
5.6.170.0230.05720.89
5.6.160.0070.11320.80
5.6.150.0130.09318.61
5.6.140.0070.10718.55
5.6.130.0030.11318.67
5.6.120.0070.08321.53
5.6.110.0070.11021.65
5.6.100.0030.09721.65
5.6.90.0200.08321.66
5.6.80.0130.09320.95
5.5.350.4330.05721.03
5.5.340.0030.06318.47
5.5.330.0030.11720.80
5.5.320.0230.05720.57
5.5.310.0100.06720.70
5.5.300.0130.06718.39
5.5.290.0030.06318.50
5.5.280.0070.10021.30
5.5.270.0100.05721.43
5.5.260.0030.06721.30
5.5.250.0100.09021.22
5.5.240.0170.10720.80
5.4.450.0230.06019.87
5.4.440.0270.06320.02
5.4.430.0300.05319.85
5.4.420.0200.08319.58
5.4.410.0270.09019.73
5.4.400.0330.09319.49
5.4.390.0200.05719.53
5.4.380.0300.08019.70
5.4.370.0200.05319.68
5.4.360.0230.06719.35
5.4.350.0230.10319.49
5.4.340.0200.06019.39
5.4.320.0130.07019.38
5.4.310.0270.06719.39
5.4.300.0200.05719.52
5.4.290.0170.06319.67
5.4.280.0330.09019.26
5.4.270.0230.05719.59
5.4.260.0170.06319.71
5.4.250.0370.09719.23
5.4.240.0300.06319.88
5.4.230.0400.09319.55
5.4.220.0330.10019.54
5.4.210.0300.10019.39
5.4.200.0330.09719.59
5.4.190.0300.09719.38
5.4.180.0370.07319.53
5.4.170.0200.06019.25
5.4.160.0200.08019.51
5.4.150.0230.08019.68
5.4.140.0230.06316.71
5.4.130.0200.11016.80
5.4.120.0330.09716.93
5.4.110.0270.10016.80
5.4.100.0270.07016.95
5.4.90.0300.09016.84
5.4.80.0200.08716.79
5.4.70.0200.06016.89
5.4.60.0470.05316.94
5.4.50.0370.08316.81
5.4.40.0270.09717.09
5.4.30.0230.06016.81
5.4.20.0230.09716.89
5.4.10.0300.09316.88
5.4.00.0200.05316.13
5.3.290.0270.09715.32
5.3.280.0230.06015.27
5.3.270.0270.09715.15
5.3.260.0200.06015.17
5.3.250.0130.07715.20
5.3.240.0230.07715.27
5.3.230.0330.09315.24
5.3.220.0270.08315.25
5.3.210.0270.08715.26
5.3.200.0270.06015.15
5.3.190.0300.08715.22
5.3.180.0230.05715.11
5.3.170.0230.07015.13
5.3.160.0300.10315.16
5.3.150.0300.10315.21
5.3.140.0300.08315.12
5.3.130.0300.09715.11
5.3.120.0270.08015.10
5.3.110.0230.08015.11
5.3.100.0200.08314.62
5.3.90.0200.05714.59
5.3.80.0100.06314.71
5.3.70.0200.05714.67
5.3.60.0130.06014.80
5.3.50.0100.06014.71
5.3.40.0230.09714.49
5.3.30.0200.08714.65
5.3.20.0130.11014.36
5.3.10.0270.07314.41
5.3.00.0200.08314.19
5.2.170.0170.05311.27
5.2.160.0170.05711.43
5.2.150.0570.05711.47
5.2.140.0200.05011.27
5.2.130.0130.07711.27
5.2.120.0200.10011.47
5.2.110.0070.06711.81
5.2.100.0130.08011.21
5.2.90.0130.07311.33
5.2.80.0230.09711.22
5.2.70.0370.05011.25
5.2.60.0170.09011.50
5.2.50.0200.07711.41
5.2.40.0130.10311.38
5.2.30.0100.10011.45
5.2.20.0130.10711.40
5.2.10.0130.04711.35
5.2.00.0100.09311.36
5.1.60.0170.09010.81
5.1.50.0170.09010.81
5.1.40.0170.10310.74
5.1.30.0100.11011.14
5.1.20.0130.10011.07
5.1.10.0230.09710.82
5.1.00.0230.09010.86
5.0.50.0000.1009.72
5.0.40.0000.0679.72
5.0.30.0130.0779.72
5.0.20.0030.0739.72
5.0.10.0070.0809.72
5.0.00.0030.0679.72
4.4.90.0000.0409.72
4.4.80.0030.0339.72
4.4.70.0030.0339.72
4.4.60.0000.0239.72
4.4.50.0070.0139.72
4.4.40.0000.0479.72
4.4.30.0000.0379.72
4.4.20.0100.0309.72
4.4.10.0030.0239.72
4.4.00.0070.0409.72
4.3.110.0030.0279.72
4.3.100.0030.0139.72
4.3.90.0030.0279.72
4.3.80.0030.0539.72
4.3.70.0030.0309.72
4.3.60.0030.0179.72
4.3.50.0030.0279.72
4.3.40.0030.0339.72
4.3.30.0030.0379.72
4.3.20.0000.0309.72
4.3.10.0000.0209.72
4.3.00.0000.0379.72

preferences:
42.48 ms | 401 KiB | 5 Q