3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(mb_internal_encoding()); var_dump(mb_strtolower('你好?')); mb_internal_encoding('UTF-8'); 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)
8.3.60.0140.00316.38
8.3.50.0130.00418.10
8.3.40.0070.00718.59
8.3.30.0070.00718.34
8.3.20.0040.00418.35
8.3.10.0040.00420.37
8.3.00.0030.00517.38
8.2.180.0110.00716.63
8.2.170.0120.00322.96
8.2.160.0140.00722.13
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00419.83
8.2.110.0000.01122.08
8.2.100.0070.00417.44
8.2.90.0030.00617.78
8.2.80.0050.00317.97
8.2.70.0050.00317.37
8.2.60.0060.00317.68
8.2.50.0000.01218.07
8.2.40.0070.00017.79
8.2.30.0040.00417.84
8.2.20.0000.00817.50
8.2.10.0000.00817.52
8.2.00.0050.00217.50
8.1.280.0140.00725.92
8.1.270.0000.00723.99
8.1.260.0000.00826.35
8.1.250.0080.00028.09
8.1.240.0060.00322.02
8.1.230.0030.00721.03
8.1.220.0000.00917.74
8.1.210.0090.00018.88
8.1.200.0000.01017.35
8.1.190.0000.00817.14
8.1.180.0060.00318.10
8.1.170.0050.00318.89
8.1.160.0040.00418.87
8.1.150.0000.00718.67
8.1.140.0030.00617.30
8.1.130.0030.00317.76
8.1.120.0040.00417.39
8.1.110.0070.00017.36
8.1.100.0000.00817.37
8.1.90.0060.00317.34
8.1.80.0040.00417.36
8.1.70.0070.00017.33
8.1.60.0120.00017.54
8.1.50.0040.00417.37
8.1.40.0040.00417.36
8.1.30.0050.00217.48
8.1.20.0030.00617.50
8.1.10.0000.00817.34
8.1.00.0030.00617.36
8.0.300.0040.00419.91
8.0.290.0000.00716.58
8.0.280.0030.00318.36
8.0.270.0040.00417.16
8.0.260.0000.00616.64
8.0.250.0040.00416.86
8.0.240.0000.01016.89
8.0.230.0030.00316.79
8.0.220.0030.00316.80
8.0.210.0030.00316.79
8.0.200.0030.00316.82
8.0.190.0030.00516.73
8.0.180.0050.00316.73
8.0.170.0100.00016.83
8.0.160.0030.00516.87
8.0.150.0020.00516.73
8.0.140.0040.00416.77
8.0.130.0030.00313.31
8.0.120.0030.00316.77
8.0.110.0050.00316.76
8.0.100.0040.00416.85
8.0.90.0070.00016.86
8.0.80.0090.00616.82
8.0.70.0040.00416.68
8.0.60.0040.00416.88
8.0.50.0030.00516.84
8.0.30.0090.00917.00
8.0.20.0120.01117.02
8.0.10.0000.00716.86
8.0.00.0130.00416.68
7.4.330.0000.00412.82
7.4.320.0000.00616.50
7.4.300.0030.00316.37
7.4.290.0000.00716.36
7.4.280.0040.00416.32
7.4.270.0060.00316.47
7.4.260.0000.00513.25
7.4.250.0000.00816.39
7.4.240.0050.00316.51
7.4.230.0030.00316.42
7.4.220.0120.00616.46
7.4.210.0050.00916.46
7.4.200.0070.00016.50
7.4.190.0020.00516.65
7.4.160.0060.01216.24
7.4.150.0100.01016.20
7.4.140.0070.01016.31
7.4.130.0110.00716.28
7.4.120.0110.00616.51
7.4.110.0120.01216.28
7.4.100.0180.00016.26
7.4.90.0120.00616.34
7.4.80.0110.00816.45
7.4.70.0140.00416.23
7.4.60.0090.00616.29
7.4.50.0000.00416.19
7.4.40.0030.01016.25
7.4.30.0110.00416.24
7.4.00.0090.00915.02
7.3.330.0060.00013.10
7.3.320.0000.00513.09
7.3.310.0070.00016.10
7.3.300.0040.00416.14
7.3.290.0160.01016.14
7.3.280.0080.00816.23
7.3.270.0090.00916.16
7.3.260.0070.01316.22
7.3.250.0120.00816.30
7.3.240.0100.01016.29
7.3.230.0110.01416.18
7.3.210.0160.00416.41
7.3.200.0090.00919.39
7.3.190.0120.00616.10
7.3.180.0130.00416.25
7.3.170.0070.01016.20
7.3.160.0060.00916.13
7.3.120.0070.00714.89
7.3.110.0070.00714.68
7.3.100.0040.00814.64
7.3.90.0040.00714.75
7.3.80.0070.00714.63
7.3.70.0110.00414.44
7.3.60.0140.00014.46
7.3.50.0030.01014.84
7.3.40.0060.00614.54
7.3.30.0120.00314.64
7.3.20.0030.01516.53
7.3.10.0130.00316.59
7.3.00.0060.00516.73
7.2.330.0090.00916.54
7.2.320.0130.01016.23
7.2.310.0080.01116.46
7.2.300.0140.00416.62
7.2.290.0070.01116.49
7.2.250.0000.01914.96
7.2.240.0130.00714.71
7.2.230.0000.00915.00
7.2.220.0030.01014.78
7.2.210.0040.01114.64
7.2.200.0070.00714.98
7.2.190.0130.00314.55
7.2.180.0070.00314.61
7.2.170.0040.01114.97
7.1.330.0090.00615.32
7.1.320.0060.01015.62
7.1.310.0070.00315.87
7.1.300.0000.00915.62
7.1.290.0000.01315.68
7.1.280.0030.00615.38
7.1.270.0030.01015.57
7.1.260.0090.00615.56
7.1.70.0030.00617.07
7.1.60.0030.01719.40
7.1.50.0120.00434.70
7.1.00.0070.06722.33
7.0.200.0040.00714.50
7.0.140.0030.07322.15
7.0.120.0030.06722.13
7.0.60.0030.04319.83
7.0.50.0170.07017.88
7.0.40.0070.04019.98
7.0.30.0430.04020.18
7.0.20.0230.09020.09
7.0.10.0130.04320.15
7.0.00.0000.05020.12
5.6.280.0170.06020.80
5.6.210.0170.07020.47
5.6.200.0070.08318.11
5.6.190.0100.07320.60
5.6.180.0330.04020.60
5.6.170.0270.06720.42
5.6.160.0030.04320.44
5.6.150.0200.06718.07
5.6.140.0070.06718.18
5.6.130.0070.08018.21
5.6.120.0100.06720.98
5.6.110.0100.07021.13
5.6.100.0070.08321.03
5.6.90.0030.07321.02
5.6.80.0070.08320.41
5.5.350.0330.07020.41
5.5.340.0030.08318.02
5.5.330.0030.07020.28
5.5.320.0300.03720.37
5.5.310.0130.08720.30
5.5.300.0070.08318.01
5.5.290.0030.08018.01
5.5.280.0130.07320.93
5.5.270.0130.06020.71
5.5.260.0100.08020.76
5.5.250.0000.04320.77
5.5.240.0100.07720.26
5.4.450.0000.04019.15
5.4.440.0100.03319.50
5.4.430.0000.04019.11
5.4.420.0030.04319.41
5.4.410.0070.03319.28
5.4.400.0030.03719.09
5.4.390.0070.04019.16
5.4.380.0070.03319.14
5.4.370.0030.04019.16
5.4.360.0070.03718.79
5.4.350.0030.03719.17
5.4.340.0000.06018.80
5.4.320.0030.04019.18
5.4.310.0070.03719.16
5.4.300.0070.07719.18
5.4.290.0130.03719.08
5.4.280.0030.04018.96
5.4.270.0030.04318.78
5.4.260.0130.03719.17
5.4.250.0070.07319.13
5.4.240.0100.07019.08
5.4.230.0030.08018.78
5.4.220.0030.04019.13
5.4.210.0100.03319.07
5.4.200.0030.04318.78
5.4.190.0030.04718.79
5.4.180.0000.07719.17
5.4.170.0030.04019.16
5.4.160.0000.05319.06
5.4.150.0100.07719.05
5.4.140.0030.07716.25
5.4.130.0030.04716.20
5.4.120.0200.04316.38
5.4.110.0230.06016.23
5.4.100.0030.03716.25
5.4.90.0030.07716.30
5.4.80.0030.03716.59
5.4.70.0030.08016.25
5.4.60.0030.04716.24
5.4.50.0070.05016.27
5.4.40.0070.04016.23
5.4.30.0100.07016.37
5.4.20.0100.05716.36
5.4.10.0030.07316.23
5.4.00.0070.07015.68
5.3.290.0070.08014.61
5.3.280.0070.08014.68
5.3.270.0100.03314.54
5.3.260.0000.07014.50
5.3.250.0030.07714.52
5.3.240.0070.06714.55
5.3.230.0030.07714.52
5.3.220.0070.08014.50
5.3.210.0070.06314.65
5.3.200.0070.06014.52
5.3.190.0170.05314.38
5.3.180.0130.03314.49
5.3.170.0100.05014.57
5.3.160.0030.03714.50
5.3.150.0070.03314.50
5.3.140.0000.08014.51
5.3.130.0130.05014.44
5.3.120.0030.08314.36
5.3.110.0070.07714.44
5.3.100.0000.06013.93
5.3.90.0070.07313.95
5.3.80.0130.06313.80
5.3.70.0070.08013.83
5.3.60.0100.05713.79
5.3.50.0100.03714.04
5.3.40.0030.03713.76
5.3.30.0070.03713.83
5.3.20.0030.03713.77
5.3.10.0070.06313.47
5.3.00.0070.03313.56
5.2.170.0030.03011.22
5.2.160.0030.03711.11
5.2.150.0000.06011.30
5.2.140.0000.03011.02
5.2.130.0070.05311.03
5.2.120.0030.03710.93
5.2.110.0000.03711.04
5.2.100.0030.06311.05
5.2.90.0030.03011.04
5.2.80.0000.03311.07
5.2.70.0070.02311.06
5.2.60.0030.02710.99
5.2.50.0070.04310.84
5.2.40.0000.03010.88
5.2.30.0030.04710.97
5.2.20.0070.03010.91
5.2.10.0030.03010.85
5.2.00.0030.06310.71
5.1.60.0030.0309.89
5.1.50.0000.0339.95
5.1.40.0000.0279.81
5.1.30.0030.02710.33
5.1.20.0030.02710.30
5.1.10.0070.05010.11
5.1.00.0030.05010.12
5.0.50.0000.0278.55
5.0.40.0030.0338.37
5.0.30.0000.0308.21
5.0.20.0030.0278.24
5.0.10.0000.0338.14
5.0.00.0000.0678.17
4.4.90.0030.0177.60
4.4.80.0000.0207.60
4.4.70.0000.0407.60
4.4.60.0100.0237.60
4.4.50.0000.0237.60
4.4.40.0000.0277.60
4.4.30.0000.0237.60
4.4.20.0000.0277.60
4.4.10.0000.0177.60
4.4.00.0030.0237.60
4.3.110.0030.0377.60
4.3.100.0030.0277.60
4.3.90.0000.0177.60
4.3.80.0000.0277.60
4.3.70.0070.0307.60
4.3.60.0000.0237.60
4.3.50.0000.0237.60
4.3.40.0030.0407.60
4.3.30.0030.0277.60
4.3.20.0070.0107.60
4.3.10.0030.0137.60
4.3.00.0000.0177.60

preferences:
49.46 ms | 400 KiB | 5 Q