3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo mb_substr('ru', -2, 2, 'UTF-8'); echo strtolower('РФ');

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)
8.3.40.0070.00718.63
8.3.30.0070.00719.05
8.3.20.0070.00020.30
8.3.10.0040.00422.09
8.3.00.0080.00022.40
8.2.170.0070.01022.96
8.2.160.0100.00720.35
8.2.150.0040.00424.18
8.2.140.0090.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00417.50
8.2.110.0140.00320.19
8.2.100.0040.00717.59
8.2.90.0000.00719.05
8.2.80.0040.00417.97
8.2.70.0050.00317.50
8.2.60.0000.00717.80
8.2.50.0080.00018.07
8.2.40.0080.00017.96
8.2.30.0050.00217.99
8.2.20.0060.00317.58
8.2.10.0080.00019.27
8.2.00.0040.00417.50
8.1.270.0040.00422.20
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0000.00922.11
8.1.230.0100.00022.07
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0000.01217.23
8.1.190.0030.00617.38
8.1.180.0060.00318.10
8.1.170.0000.00918.46
8.1.160.0000.00721.93
8.1.150.0070.00018.41
8.1.140.0000.00817.31
8.1.130.0040.00417.62
8.1.120.0000.00717.36
8.1.110.0040.00417.23
8.1.100.0050.00317.35
8.1.90.0020.00517.30
8.1.80.0040.00417.32
8.1.70.0000.00617.21
8.1.60.0080.00017.41
8.1.50.0070.00017.35
8.1.40.0000.00717.36
8.1.30.0030.00517.53
8.1.20.0000.00917.45
8.1.10.0040.00417.39
8.1.00.0050.00317.48
8.0.300.0030.00318.77
8.0.290.0040.00417.18
8.0.280.0000.00718.47
8.0.270.0000.00717.28
8.0.260.0060.00016.73
8.0.250.0000.00616.80
8.0.240.0070.00016.89
8.0.230.0030.00316.91
8.0.220.0030.00416.82
8.0.210.0000.00716.73
8.0.200.0030.00516.92
8.0.190.0030.00616.90
8.0.180.0000.00716.80
8.0.170.0000.00816.85
8.0.160.0000.00716.86
8.0.150.0030.00316.68
8.0.140.0000.00716.76
8.0.130.0030.00313.31
8.0.120.0000.00716.68
8.0.110.0040.00416.73
8.0.100.0000.00816.77
8.0.90.0000.00716.93
8.0.80.0130.00316.75
8.0.70.0030.00516.68
8.0.60.0040.00416.61
8.0.50.0040.00416.64
8.0.30.0100.01317.00
8.0.20.0080.01017.40
8.0.10.0040.00416.96
8.0.00.0100.00816.53
7.4.330.0030.00315.00
7.4.320.0080.00016.49
7.4.300.0030.00316.36
7.4.290.0030.00316.43
7.4.280.0030.00316.51
7.4.270.0000.00716.47
7.4.260.0030.00316.43
7.4.250.0000.00716.45
7.4.240.0040.00416.39
7.4.230.0030.00316.55
7.4.220.0140.00316.49
7.4.210.0050.00916.44
7.4.200.0030.00316.21
7.4.190.0070.00016.55
7.4.160.0090.00616.18
7.4.150.0100.01017.40
7.4.140.0120.00817.86
7.4.130.0080.00916.29
7.4.120.0110.00916.37
7.4.110.0040.01416.19
7.4.100.0140.00416.44
7.4.90.0070.01016.34
7.4.80.0090.01119.39
7.4.70.0090.00616.20
7.4.60.0110.00616.34
7.4.50.0040.00416.45
7.4.40.0080.00822.77
7.4.30.0090.01216.41
7.4.10.0000.01814.82
7.4.00.0030.01414.68
7.3.330.0000.00512.93
7.3.320.0000.00512.92
7.3.310.0000.00716.06
7.3.300.0000.00616.11
7.3.290.0100.00316.18
7.3.280.0090.00716.14
7.3.270.0140.00517.40
7.3.260.0100.00616.28
7.3.250.0100.01016.32
7.3.240.0060.01116.44
7.3.230.0130.00316.42
7.3.210.0160.01116.20
7.3.200.0160.00019.39
7.3.190.0150.00916.23
7.3.180.0130.00316.38
7.3.170.0110.00616.47
7.3.160.0080.00816.41
7.3.130.0160.00014.80
7.3.120.0050.00514.63
7.3.110.0120.00614.88
7.3.100.0110.00314.73
7.3.90.0060.00914.69
7.3.80.0070.00714.50
7.3.70.0060.00914.53
7.3.60.0030.01014.50
7.3.50.0000.01214.73
7.3.40.0070.00714.81
7.3.30.0100.00314.89
7.3.20.0090.00616.28
7.3.10.0150.00016.63
7.3.00.0090.00316.43
7.2.330.0120.00616.43
7.2.320.0100.01316.37
7.2.310.0190.00316.34
7.2.300.0090.00916.64
7.2.290.0070.01316.34
7.2.260.0030.01314.94
7.2.250.0070.01114.99
7.2.240.0030.01014.98
7.2.230.0040.01815.00
7.2.220.0090.00914.88
7.2.210.0080.01114.68
7.2.200.0100.00614.91
7.2.190.0030.01214.73
7.2.180.0000.00914.69
7.2.170.0030.01015.07
7.2.160.0030.00614.89
7.2.150.0070.01016.64
7.2.140.0100.00716.80
7.2.130.0080.00816.69
7.2.120.0000.01016.59
7.2.110.0110.00316.71
7.2.100.0040.01116.50
7.2.90.0120.00316.45
7.2.80.0030.01216.71
7.2.70.0100.00316.75
7.2.60.0040.00816.49
7.2.50.0070.01016.86
7.2.40.0060.00616.55
7.2.30.0030.00916.70
7.2.20.0030.01016.71
7.2.10.0060.00916.45
7.2.00.0100.00517.96
7.1.330.0130.00015.59
7.1.320.0070.01115.63
7.1.310.0070.00715.36
7.1.300.0060.00915.67
7.1.290.0070.00715.66
7.1.280.0000.01115.68
7.1.270.0030.01015.65
7.1.260.0090.00915.58
7.1.250.0070.01015.52
7.1.240.0000.01215.57
7.1.230.0000.01415.53
7.1.220.0070.00415.56
7.1.210.0030.00615.74
7.1.200.0070.00415.52
7.1.190.0050.00515.64
7.1.180.0080.00415.71
7.1.170.0140.00415.50
7.1.160.0000.01215.55
7.1.150.0040.01115.79
7.1.140.0070.00715.77
7.1.130.0070.01015.80
7.1.120.0070.00715.64
7.1.110.0030.00615.74
7.1.100.0050.01017.01
7.1.90.0070.01015.77
7.1.80.0100.00715.81
7.1.70.0050.00816.39
7.1.60.0100.00917.70
7.1.50.0070.01216.15
7.1.40.0050.01215.72
7.1.30.0140.00215.52
7.1.20.0030.00715.46
7.1.10.0040.01215.24
7.1.00.0070.04018.99
7.0.330.0060.00915.29
7.0.320.0040.00815.38
7.0.310.0030.00715.27
7.0.300.0070.01015.02
7.0.290.0080.00815.36
7.0.280.0100.00315.25
7.0.270.0160.00015.23
7.0.260.0070.01015.34
7.0.250.0040.00815.20
7.0.240.0070.00415.36
7.0.230.0060.00615.07
7.0.220.0000.01415.39
7.0.210.0060.01015.48
7.0.200.0030.00815.99
7.0.190.0060.00615.43
7.0.180.0110.00315.39
7.0.170.0080.00615.46
7.0.160.0030.01315.28
7.0.150.0120.00315.36
7.0.140.0080.03818.73
7.0.130.0060.00615.04
7.0.120.0060.00615.38
7.0.110.0000.00915.35
7.0.100.0000.01215.37
7.0.90.0000.01515.46
7.0.80.0040.00715.14
7.0.70.0030.00915.05
7.0.60.0040.04717.70
7.0.50.0090.04216.63
7.0.40.0120.03816.67
7.0.30.0030.03016.56
7.0.20.0150.04516.75
7.0.10.0030.04916.63
7.0.00.0050.04816.66
5.6.400.0060.01214.21
5.6.390.0070.00714.15
5.6.380.0000.01314.19
5.6.370.0040.01114.15
5.6.360.0050.01013.92
5.6.350.0000.01614.43
5.6.340.0040.00414.04
5.6.330.0040.00814.06
5.6.320.0060.00614.46
5.6.310.0040.00714.32
5.6.300.0060.01014.30
5.6.290.0000.01514.35
5.6.280.0020.04417.63
5.6.270.0030.01013.96
5.6.260.0070.00714.16
5.6.250.0060.00614.14
5.6.240.0070.00714.02
5.6.230.0150.00014.24
5.6.220.0060.00914.00
5.6.210.0100.03617.39
5.6.200.0040.02316.13
5.6.190.0030.02817.42
5.6.180.0100.04317.26
5.6.170.0170.02517.30
5.6.160.0090.02717.40
5.6.150.0020.04916.18
5.6.140.0020.02816.18
5.6.130.0100.02516.16
5.6.120.0030.03517.66
5.6.110.0100.03817.45
5.6.100.0070.03017.54
5.6.90.0070.03017.53
5.6.80.0030.02317.25
5.6.70.0000.00814.18
5.6.60.0110.00313.93
5.6.50.0060.01214.09
5.6.40.0100.00314.12
5.6.30.0120.00013.94
5.6.20.0030.00914.00
5.6.10.0110.00014.05
5.6.00.0040.01413.89
5.5.380.0040.00713.93
5.5.370.0040.00814.04
5.5.360.0040.01213.95
5.5.350.0070.03917.35
5.5.340.0100.04215.94
5.5.330.0020.02817.36
5.5.320.0170.02617.09
5.5.310.0070.03017.27
5.5.300.0020.03816.12
5.5.290.0090.02915.93
5.5.280.0070.04317.47
5.5.270.0030.02617.35
5.5.260.0050.04917.51
5.5.250.0100.04217.29
5.5.240.0040.04417.08
5.5.230.0030.00714.09
5.5.220.0070.00714.16
5.5.210.0040.01214.16
5.5.200.0060.00813.89
5.5.190.0060.00613.79
5.5.180.0060.00314.24
5.5.170.0100.00714.10
5.5.160.0130.00313.96
5.5.150.0150.00314.17
5.5.140.0100.00314.04
5.5.130.0050.00613.87
5.5.120.0060.00613.97
5.5.110.0030.01413.91
5.5.100.0070.00413.80
5.5.90.0110.00413.94
5.5.80.0130.00313.98
5.5.70.0130.00013.92
5.5.60.0040.01214.24
5.5.50.0100.00313.52
5.5.40.0050.00514.12
5.5.30.0030.00914.21
5.5.20.0070.01014.20
5.5.10.0000.01214.23
5.5.00.0030.01013.84
5.4.450.0170.02815.27
5.4.440.0080.03515.18
5.4.430.0350.02815.39
5.4.420.0370.02915.41
5.4.410.0130.03715.11
5.4.400.0950.00514.97
5.4.390.0780.00414.96
5.4.380.0150.03414.97
5.4.370.0120.02714.93
5.4.360.0100.02914.94
5.4.350.0120.02714.99
5.4.340.0130.02614.94
5.4.330.0060.00911.27
5.4.320.0060.02211.86
5.4.310.0060.02311.86
5.4.300.0060.02111.86
5.4.290.0020.02511.86
5.4.280.0040.02111.80
5.4.270.0100.03814.99
5.4.260.0140.02215.08
5.4.250.0100.02914.98
5.4.240.0080.03315.12
5.4.230.0100.04115.08
5.4.220.0150.03314.94
5.4.210.0070.03215.14
5.4.200.0070.03315.05
5.4.190.0100.03515.09
5.4.180.0100.03715.14
5.4.170.0020.03315.08
5.4.160.0030.03415.07
5.4.150.0080.03215.07
5.4.140.0070.02913.77
5.4.130.0090.03913.74
5.4.120.0070.02513.76
5.4.110.0080.02713.77
5.4.100.0080.02513.78
5.4.90.0070.02813.79
5.4.80.0080.02713.78
5.4.70.0100.03413.85
5.4.60.0150.02213.86
5.4.50.0070.04213.80
5.4.40.0050.03113.74
5.4.30.0070.03313.81
5.4.20.0080.02813.83
5.4.10.0070.03513.77
5.4.00.0080.02513.49
5.3.290.0040.02812.04
5.3.280.0060.03312.93
5.3.270.0070.04012.93
5.3.260.0080.04012.94
5.3.250.0110.03712.87
5.3.240.0100.03312.93
5.3.230.0100.03212.78
5.3.220.0100.02512.91
5.3.210.0070.03012.86
5.3.200.0030.03112.87
5.3.190.0080.02912.81
5.3.180.0070.02512.92
5.3.170.0060.03612.92
5.3.160.0100.03112.84
5.3.150.0080.02912.92
5.3.140.0090.02712.91
5.3.130.0050.03012.87
5.3.120.0060.03112.79
5.3.110.0080.03712.75
5.3.100.0110.02712.65
5.3.90.0040.03212.68
5.3.80.0070.02812.61
5.3.70.0070.03012.65
5.3.60.0080.02812.65
5.3.50.0100.02712.52
5.3.40.0110.03112.68
5.3.30.0050.02712.58
5.3.20.0090.03012.55
5.3.10.0030.03712.53
5.3.00.0080.02712.46
5.2.170.0130.05011.12
5.2.160.0100.04011.07
5.2.150.0200.04711.13
5.2.140.0100.05011.15
5.2.130.0070.04311.02
5.2.120.0000.04310.98
5.2.110.0000.05011.03
5.2.100.0070.04011.09
5.2.90.0230.04011.01
5.2.80.0100.04011.18
5.2.70.0100.04711.00
5.2.60.0070.05710.81
5.2.50.0030.05311.17
5.2.40.0070.04011.00
5.2.30.0030.05010.89
5.2.20.0100.05010.96
5.2.10.0130.04310.79
5.2.00.0130.03310.79
5.1.60.0030.0379.99
5.1.50.0170.0279.90
5.1.40.0170.0379.82
5.1.30.0100.03310.38
5.1.20.0070.05710.52
5.1.10.0100.04310.13
5.1.00.0130.0579.99
5.0.50.0000.0438.57
5.0.40.0130.0208.46
5.0.30.0030.0408.41
5.0.20.0030.0308.16
5.0.10.0100.0338.27
5.0.00.0000.0508.07
4.4.90.0070.0207.23
4.4.80.0030.0237.23
4.4.70.0030.0207.23
4.4.60.0000.0237.23
4.4.50.0000.0277.23
4.4.40.0070.0307.23
4.4.30.0000.0337.23
4.4.20.0030.0307.23
4.4.10.0030.0277.23
4.4.00.0030.0337.23
4.3.110.0030.0277.23
4.3.100.0170.0177.23
4.3.90.0030.0237.23
4.3.80.0070.0337.23
4.3.70.0130.0177.23
4.3.60.0000.0307.23
4.3.50.0070.0307.23
4.3.40.0070.0277.23
4.3.30.0000.0277.23
4.3.20.0070.0207.23
4.3.10.0000.0307.23
4.3.00.0030.0237.33

preferences:
44.88 ms | 400 KiB | 5 Q