3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(mb_internal_encoding()); var_dump(mb_strtolower('你好?'));

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)
8.3.40.0160.00318.75
8.3.30.0110.00418.42
8.3.20.0000.00818.44
8.3.10.0150.00018.43
8.3.00.0090.00019.25
8.2.170.0140.00622.96
8.2.160.0060.00918.79
8.2.150.0030.00524.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0000.00720.81
8.2.110.0060.00322.13
8.2.100.0040.00919.51
8.2.90.0000.00817.38
8.2.80.0060.00318.70
8.2.70.0030.00617.38
8.2.60.0060.00317.80
8.2.50.0040.00418.07
8.2.40.0040.00418.20
8.2.30.0050.00517.60
8.2.20.0030.00617.43
8.2.10.0000.00717.54
8.2.00.0060.00317.60
8.1.270.0050.00323.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0050.00520.28
8.1.230.0100.00017.58
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0060.00317.11
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0040.00420.41
8.1.160.0030.00318.93
8.1.150.0000.00818.56
8.1.140.0020.00517.43
8.1.130.0000.00717.43
8.1.120.0070.00017.32
8.1.110.0050.00317.28
8.1.100.0050.00317.27
8.1.90.0040.00417.40
8.1.80.0000.00717.27
8.1.70.0000.00817.27
8.1.60.0080.00017.46
8.1.50.0030.00617.39
8.1.40.0040.00417.43
8.1.30.0000.00817.56
8.1.20.0040.00417.48
8.1.10.0000.00917.37
8.1.00.0080.00017.29
8.0.300.0080.00018.77
8.0.290.0080.00016.63
8.0.280.0070.00018.45
8.0.270.0030.00317.22
8.0.260.0000.00616.74
8.0.250.0000.00716.81
8.0.240.0040.00316.91
8.0.230.0040.00416.80
8.0.220.0040.00416.92
8.0.210.0030.00516.83
8.0.200.0030.00316.87
8.0.190.0000.00716.86
8.0.180.0090.00016.88
8.0.170.0060.00316.66
8.0.160.0000.00716.89
8.0.150.0000.00916.76
8.0.140.0060.00316.80
8.0.130.0050.00013.17
8.0.120.0040.00416.67
8.0.110.0060.00316.84
8.0.100.0070.00016.84
8.0.90.0070.00016.78
8.0.80.0070.01016.86
8.0.70.0050.00216.72
8.0.60.0040.00416.87
8.0.50.0080.00016.87
8.0.30.0070.01416.89
8.0.20.0090.01417.02
8.0.10.0040.00416.99
8.0.00.0110.00916.75
7.4.330.0000.00512.90
7.4.320.0070.00016.54
7.4.300.0000.00716.39
7.4.290.0030.00316.52
7.4.280.0030.00516.32
7.4.270.0020.00516.36
7.4.260.0000.00513.30
7.4.250.0040.00416.43
7.4.240.0000.00716.46
7.4.230.0000.00716.26
7.4.220.0090.00916.32
7.4.210.0100.00416.45
7.4.200.0000.00816.59
7.4.190.0050.00216.49
7.4.160.0100.00716.14
7.4.150.0150.00816.14
7.4.140.0090.00916.20
7.4.130.0100.01016.43
7.4.120.0060.01616.25
7.4.110.0190.00316.33
7.4.100.0070.00916.31
7.4.90.0060.01616.46
7.4.80.0040.01219.39
7.4.70.0090.01516.33
7.4.60.0070.01416.50
7.4.50.0050.00016.38
7.4.40.0040.00816.21
7.4.30.0070.01416.46
7.4.00.0060.00614.42
7.3.330.0030.00313.18
7.3.320.0070.00013.14
7.3.310.0000.00716.32
7.3.300.0060.00016.20
7.3.290.0080.00716.27
7.3.280.0080.00816.29
7.3.270.0110.00716.33
7.3.260.0180.00416.28
7.3.250.0090.01416.28
7.3.240.0070.01116.18
7.3.230.0070.01016.39
7.3.210.0150.00616.23
7.3.200.0080.00816.26
7.3.190.0060.01216.14
7.3.180.0150.00416.38
7.3.170.0090.00716.22
7.3.160.0100.00716.43
7.3.120.0000.00914.54
7.2.330.0120.00616.39
7.2.320.0140.00316.39
7.2.310.0150.00616.46
7.2.300.0110.00916.54
7.2.290.0000.01616.38
7.1.100.0300.01017.51
7.1.70.0040.01117.25
7.1.60.0030.02019.30
7.1.50.0100.01416.69
7.1.00.0030.07722.30
7.0.200.0000.00816.58
7.0.140.0030.07321.95
7.0.120.0130.05722.15
7.0.60.0030.04019.93
7.0.50.0100.07017.89
7.0.40.0070.08019.98
7.0.30.0530.06320.04
7.0.20.0330.07720.00
7.0.10.0130.08720.12
7.0.00.0030.04320.17
5.6.280.0030.07321.06
5.6.210.0200.04720.70
5.6.200.0130.06018.23
5.6.190.0130.06320.41
5.6.180.0070.05020.61
5.6.170.0330.07020.50
5.6.160.0070.08320.54
5.6.150.0100.08318.15
5.6.140.0000.05318.12
5.6.130.0030.04018.14
5.6.120.0130.08021.01
5.6.110.0070.07320.88
5.6.100.0000.04320.99
5.6.90.0000.04320.95
5.6.80.0000.08720.53
5.6.70.3600.02720.36
5.5.350.0300.05720.39
5.5.340.0100.06717.92
5.5.330.0100.08020.56
5.5.320.0230.04320.32
5.5.310.0300.07720.20
5.5.300.0100.08017.88
5.5.290.0070.07317.98
5.5.280.0070.04020.97
5.5.270.0130.07020.79
5.5.260.0030.04020.83
5.5.250.0100.08320.66
5.5.240.0230.03320.15
5.4.450.0070.04319.51
5.4.440.0130.06019.50
5.4.430.0170.05719.51
5.4.420.0030.05019.13
5.4.410.0030.06319.00
5.4.400.0000.05318.83
5.4.390.0100.04318.80
5.4.380.0030.06719.09
5.4.370.0070.05319.14
5.4.360.0100.07719.18
5.4.350.0170.04719.00
5.4.340.0030.04319.08
5.4.320.0130.07018.79
5.4.310.0130.06718.80
5.4.300.0070.07018.80
5.4.290.0030.05318.77
5.4.280.0070.03719.13
5.4.270.0030.04018.94
5.4.260.0000.06319.07
5.4.250.0130.06719.07
5.4.240.0070.07319.07
5.4.230.0170.05719.15
5.4.220.0030.05319.00
5.4.210.0030.03719.14
5.4.200.0100.06719.18
5.4.190.0070.07319.07
5.4.180.0100.04719.07
5.4.170.0070.07318.91
5.4.160.0170.07018.78
5.4.150.0170.05718.79
5.4.140.0030.07316.16
5.4.130.0130.03316.30
5.4.120.0030.07316.47
5.4.110.0130.04316.40
5.4.100.0100.08016.36
5.4.90.0000.07316.21
5.4.80.0170.06016.35
5.4.70.0070.04316.35
5.4.60.0070.07016.32
5.4.50.0100.04716.26
5.4.40.0030.08016.26
5.4.30.0070.03716.63
5.4.20.0000.06016.29
5.4.10.0030.04716.23
5.4.00.0030.05315.78
5.3.290.0070.05714.54
5.3.280.0030.05714.53
5.3.270.0070.08014.61
5.3.260.0030.08314.54
5.3.250.0030.05014.50
5.3.240.0000.04314.52
5.3.230.0070.04314.49
5.3.220.0100.07314.38
5.3.210.0030.04314.56
5.3.200.0130.05014.50
5.3.190.0070.04714.44
5.3.180.0070.04014.37
5.3.170.0070.04714.50
5.3.160.0070.04314.52
5.3.150.0000.04314.64
5.3.140.0130.03314.50
5.3.130.0100.07714.52
5.3.120.0070.07714.46
5.3.110.0100.07014.48
5.3.100.0000.04714.00
5.3.90.0100.04313.84
5.3.80.0070.05313.80
5.3.70.0030.05013.94
5.3.60.0000.07013.79
5.3.50.0070.07314.03
5.3.40.0100.07013.87
5.3.30.0100.06713.86
5.3.20.0030.07313.64
5.3.10.0070.04713.58
5.3.00.0130.05713.57
5.2.170.0000.06011.08
5.2.160.0070.06011.09
5.2.150.0100.04711.07
5.2.140.0030.05311.12
5.2.130.0000.04311.08
5.2.120.0070.05311.09
5.2.110.0070.06311.02
5.2.100.0000.05011.09
5.2.90.0030.05311.11
5.2.80.0070.04711.25
5.2.70.0070.03710.99
5.2.60.0000.07011.02
5.2.50.0000.07010.86
5.2.40.0030.06010.95
5.2.30.0030.04710.80
5.2.20.0030.03010.84
5.2.10.0100.05010.90
5.2.00.0000.04710.80
5.1.60.0100.03310.80
5.1.50.0000.06010.80
5.1.40.0000.04710.80
5.1.30.0070.05310.80
5.1.20.0070.05710.80
5.1.10.0000.04310.80
5.1.00.0000.04710.80
5.0.50.0030.05010.80
5.0.40.0000.03710.80
5.0.30.0070.06310.80
5.0.20.0070.04310.80
5.0.10.0030.04310.80
5.0.00.0000.03310.80
4.4.90.0030.04010.80
4.4.80.0070.03010.80
4.4.70.0000.02310.80
4.4.60.0030.02310.80
4.4.50.0000.02310.80
4.4.40.0030.04010.80
4.4.30.0030.03310.80
4.4.20.0000.03310.80
4.4.10.0030.03710.80
4.4.00.0070.04710.80
4.3.110.0030.03710.80
4.3.100.0030.01310.80
4.3.90.0000.02310.80
4.3.80.0000.03010.80
4.3.70.0000.02310.80
4.3.60.0030.01310.80
4.3.50.0000.03710.80
4.3.40.0000.05010.80
4.3.30.0030.03010.80
4.3.20.0000.03310.80
4.3.10.0030.02310.80
4.3.00.0000.03310.80

preferences:
58.04 ms | 400 KiB | 5 Q