3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string="這是wibibi測試字串"; echo mb_substr( $string,0,8,"utf-8");

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)
8.3.40.0110.00418.70
8.3.30.0110.00719.18
8.3.20.0090.00020.21
8.3.10.0070.00023.78
8.3.00.0070.00020.61
8.2.170.0070.01022.96
8.2.160.0070.00722.12
8.2.150.0050.00324.18
8.2.140.0100.00024.66
8.2.130.0040.00426.16
8.2.120.0000.00720.41
8.2.110.0030.00622.28
8.2.100.0090.00317.78
8.2.90.0040.00419.10
8.2.80.0040.00417.97
8.2.70.0040.00817.50
8.2.60.0000.00817.93
8.2.50.0040.00418.07
8.2.40.0040.00418.16
8.2.30.0040.00418.11
8.2.20.0070.00017.53
8.2.10.0040.00417.72
8.2.00.0060.00317.63
8.1.270.0080.00023.97
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0050.00323.96
8.1.230.0040.00719.21
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0030.00617.22
8.1.190.0000.00817.41
8.1.180.0030.00518.10
8.1.170.0030.00618.54
8.1.160.0000.00721.82
8.1.150.0070.00018.62
8.1.140.0040.00417.23
8.1.130.0030.00317.76
8.1.120.0000.00817.30
8.1.110.0040.00417.39
8.1.100.0000.00717.45
8.1.90.0000.00717.41
8.1.80.0030.00317.27
8.1.70.0040.00417.28
8.1.60.0000.00817.44
8.1.50.0040.00417.39
8.1.40.0040.00417.46
8.1.30.0030.00517.55
8.1.20.0040.00417.55
8.1.10.0030.00617.56
8.1.00.0040.00417.54
8.0.300.0040.00418.77
8.0.290.0080.00017.30
8.0.280.0000.00718.50
8.0.270.0040.00417.23
8.0.260.0000.00616.75
8.0.250.0030.00316.97
8.0.240.0000.00817.02
8.0.230.0000.00716.92
8.0.220.0000.00716.79
8.0.210.0030.00316.93
8.0.200.0060.00016.97
8.0.190.0070.00016.81
8.0.180.0000.00716.91
8.0.170.0060.00316.89
8.0.160.0000.00716.99
8.0.150.0000.00716.72
8.0.140.0040.00416.74
8.0.130.0000.00613.33
8.0.120.0040.00416.84
8.0.110.0050.00216.88
8.0.100.0000.00716.85
8.0.90.0070.00016.92
8.0.80.0060.01016.86
8.0.70.0080.00016.71
8.0.60.0070.00017.00
8.0.50.0080.00016.93
8.0.30.0090.01216.92
8.0.20.0170.00917.40
8.0.10.0050.00216.95
8.0.00.0110.00916.62
7.4.330.0020.00215.07
7.4.320.0030.00316.43
7.4.300.0000.00616.33
7.4.290.0030.00316.52
7.4.280.0030.00316.50
7.4.270.0030.00316.51
7.4.260.0000.00616.51
7.4.250.0050.00316.44
7.4.240.0060.00216.43
7.4.230.0000.00716.64
7.4.220.0070.01116.51
7.4.210.0080.00716.53
7.4.200.0000.00716.41
7.4.190.0040.00416.35
7.4.160.0120.00416.45
7.4.150.0090.00917.40
7.4.140.0120.00617.86
7.4.130.0100.00716.36
7.4.120.0090.00716.45
7.4.110.0070.01016.52
7.4.100.0060.01116.42
7.4.90.0130.00716.52
7.4.80.0110.00816.45
7.4.70.0100.00716.43
7.4.60.0060.01216.53
7.4.50.0020.00216.39
7.4.40.0080.00422.77
7.4.30.0090.00916.56
7.4.10.0070.01314.70
7.4.00.0080.00715.07
7.3.330.0050.00012.98
7.3.320.0000.00513.01
7.3.310.0030.00316.13
7.3.300.0070.00016.12
7.3.290.0100.01016.17
7.3.280.0090.00916.13
7.3.270.0090.00917.40
7.3.260.0120.00916.30
7.3.250.0080.00916.33
7.3.240.0110.00816.50
7.3.230.0100.00716.39
7.3.210.0100.00716.31
7.3.200.0100.01319.39
7.3.190.0090.00816.18
7.3.180.0080.00816.39
7.3.170.0120.00616.47
7.3.160.0080.00816.14
7.3.130.0110.00714.47
7.3.120.0040.01114.62
7.3.110.0120.00614.81
7.3.100.0040.01214.68
7.3.90.0090.00615.03
7.3.80.0030.00614.52
7.3.70.0080.00614.53
7.3.60.0110.00414.84
7.3.50.0040.01114.50
7.3.40.0040.00814.75
7.3.30.0000.01314.34
7.3.20.0070.00716.48
7.3.10.0060.00616.45
7.3.00.0090.00616.76
7.2.330.0060.01216.62
7.2.320.0140.00316.23
7.2.310.0070.01016.38
7.2.300.0040.01516.54
7.2.290.0100.00716.32
7.2.260.0000.01615.14
7.2.250.0030.01615.09
7.2.240.0030.01015.13
7.2.230.0130.00314.92
7.2.220.0040.01114.73
7.2.210.0030.01014.91
7.2.200.0000.01615.10
7.2.190.0060.00914.86
7.2.180.0030.01015.09
7.2.170.0120.00414.95
7.2.160.0120.00314.99
7.2.150.0090.00316.67
7.2.140.0070.00717.00
7.2.130.0130.00016.86
7.2.120.0120.00316.84
7.2.110.0000.01316.77
7.2.100.0150.00016.68
7.2.90.0080.00416.55
7.2.80.0060.00316.87
7.2.70.0110.00616.64
7.2.60.0110.00416.66
7.2.50.0110.00016.96
7.2.40.0060.00616.65
7.2.30.0110.00016.68
7.2.20.0060.00616.85
7.2.10.0060.01016.64
7.2.00.0060.00418.07
7.1.330.0070.00715.84
7.1.320.0070.01115.74
7.1.310.0130.00015.85
7.1.300.0050.00515.93
7.1.290.0040.00815.84
7.1.280.0150.00015.79
7.1.270.0060.01015.62
7.1.260.0000.01615.82
7.1.250.0080.00415.80
7.1.240.0060.00915.86
7.1.230.0070.00315.77
7.1.220.0060.00315.73
7.1.210.0130.00015.75
7.1.200.0000.01215.80
7.1.190.0000.01515.81
7.1.180.0030.01315.79
7.1.170.0080.00415.82
7.1.160.0030.00815.42
7.1.150.0030.00915.81
7.1.140.0030.00615.80
7.1.130.0090.00615.81
7.1.120.0030.01415.70
7.1.110.0040.01115.59
7.1.100.0050.00716.95
7.1.90.0070.00315.93
7.1.80.0100.00015.72
7.1.70.0030.00916.14
7.1.60.0010.01517.55
7.1.50.0020.01616.38
7.1.40.0040.00415.73
7.1.30.0050.00315.85
7.1.20.0070.00715.80
7.1.10.0030.01315.83
7.1.00.0070.03619.03
7.0.330.0000.00815.30
7.0.320.0070.00715.36
7.0.310.0030.00615.30
7.0.300.0030.01015.05
7.0.290.0030.01015.38
7.0.280.0100.00315.33
7.0.270.0030.00815.32
7.0.260.0060.00315.32
7.0.250.0110.00015.46
7.0.240.0030.01015.36
7.0.230.0000.00915.33
7.0.220.0030.01015.17
7.0.210.0040.00715.37
7.0.200.0080.00215.86
7.0.190.0030.00515.43
7.0.180.0030.01015.21
7.0.170.0090.00315.02
7.0.160.0000.01415.25
7.0.150.0070.01015.33
7.0.140.0040.03918.72
7.0.130.0100.00315.51
7.0.120.0060.00315.61
7.0.110.0040.01115.29
7.0.100.0090.00015.24
7.0.90.0070.00715.18
7.0.80.0060.00615.32
7.0.70.0030.01015.41
7.0.60.0070.03217.69
7.0.50.0070.02716.67
7.0.40.0050.04716.63
7.0.30.0100.03716.72
7.0.20.0150.04416.64
7.0.10.0070.02216.74
7.0.00.0110.04016.85
5.6.400.0030.00914.33
5.6.390.0000.01114.10
5.6.380.0000.01314.25
5.6.370.0110.00314.34
5.6.360.0070.00714.06
5.6.350.0060.00914.20
5.6.340.0030.00614.36
5.6.330.0100.00414.18
5.6.320.0040.00714.09
5.6.310.0090.00614.25
5.6.300.0050.00314.40
5.6.290.0140.00014.52
5.6.280.0050.04117.67
5.6.270.0040.00714.17
5.6.260.0090.00014.33
5.6.250.0060.00314.00
5.6.240.0090.00314.01
5.6.230.0000.01714.39
5.6.220.0040.00814.20
5.6.210.0100.03317.40
5.6.200.0050.03216.19
5.6.190.0020.03017.35
5.6.180.0170.03517.36
5.6.170.0160.02917.34
5.6.160.0050.04517.42
5.6.150.0090.02516.31
5.6.140.0070.02616.31
5.6.130.0100.02016.11
5.6.120.0030.02417.72
5.6.110.0030.03217.70
5.6.100.0060.04817.42
5.6.90.0100.04317.49
5.6.80.0080.03317.27
5.6.70.0000.01214.34
5.6.60.0030.00914.01
5.6.50.0080.00313.99
5.6.40.0060.00914.03
5.6.30.0030.00913.82
5.6.20.0030.00714.07
5.6.10.0060.00613.89
5.6.00.0060.00614.21
5.5.380.0060.00614.08
5.5.370.0000.01613.98
5.5.360.0000.01314.41
5.5.350.0200.04117.19
5.5.340.0090.02816.05
5.5.330.0050.03817.28
5.5.320.0190.04217.13
5.5.310.0090.02717.30
5.5.300.0070.03916.01
5.5.290.0060.04516.03
5.5.280.0020.03017.58
5.5.270.0080.04517.49
5.5.260.0040.02917.44
5.5.250.0070.04517.23
5.5.240.0080.04216.96
5.5.230.0060.00914.13
5.5.220.0060.00314.02
5.5.210.0060.00614.29
5.5.200.0000.01513.96
5.5.190.0060.00614.02
5.5.180.0000.01113.95
5.5.170.0030.01313.84
5.5.160.0030.00714.01
5.5.150.0000.01213.96
5.5.140.0070.00714.06
5.5.130.0070.00714.19
5.5.120.0040.01114.11
5.5.110.0070.00414.24
5.5.100.0030.01213.71
5.5.90.0000.00813.93
5.5.80.0090.00314.31
5.5.70.0080.00814.23
5.5.60.0070.00714.39
5.5.50.0120.00013.84
5.5.40.0000.01214.14
5.5.30.0090.00014.26
5.5.20.0000.01714.00
5.5.10.0130.00313.92
5.5.00.0060.00314.09
5.4.450.0460.03015.21
5.4.440.0420.02815.36
5.4.430.0280.03115.42
5.4.420.0350.00215.39
5.4.410.0070.03015.12
5.4.400.0150.02915.04
5.4.390.0100.03115.00
5.4.380.0150.02614.89
5.4.370.0070.02114.88
5.4.360.0070.02514.87
5.4.350.0050.02211.63
5.4.340.0060.02311.62
5.4.330.0070.00411.28
5.4.320.0030.02811.87
5.4.310.0080.02011.87
5.4.300.0080.01911.87
5.4.290.0040.02311.86
5.4.280.0040.02711.80
5.4.270.0070.02611.80
5.4.260.0060.03011.80
5.4.250.0040.02811.80
5.4.240.0020.02811.80
5.4.230.0050.02411.80
5.4.220.0060.02111.79
5.4.210.0040.02411.79
5.4.200.0060.02211.80
5.4.190.0050.02411.79
5.4.180.0080.03111.79
5.4.170.0070.01911.80
5.4.160.0080.02411.80
5.4.150.0060.02311.80
5.4.140.0070.02211.64
5.4.130.0060.02111.63
5.4.120.0050.02411.61
5.4.110.0030.03111.61
5.4.100.0080.02211.61
5.4.90.0050.02911.61
5.4.80.0050.02511.61
5.4.70.0080.02711.61
5.4.60.0080.01811.61
5.4.50.0080.02011.61
5.4.40.0100.01911.60
5.4.30.0070.02611.60
5.4.20.0070.03311.60
5.4.10.0060.02511.60
5.4.00.0040.02811.34
5.3.290.0060.02312.04
5.3.280.0040.02812.00
5.3.270.0080.02312.00
5.3.260.0070.03012.00
5.3.250.0100.02412.00
5.3.240.0070.03712.00
5.3.230.0100.02611.99
5.3.220.0050.03011.98
5.3.210.0060.02911.98
5.3.200.0050.02211.98
5.3.190.0080.02511.98
5.3.180.0060.02411.98
5.3.170.0090.02011.97
5.3.160.0080.02311.98
5.3.150.0030.02711.98
5.3.140.0040.02411.97
5.3.130.0070.02011.97
5.3.120.0040.02611.97
5.3.110.0070.02911.97
5.3.100.0070.02011.70
5.3.90.0040.02511.68
5.3.80.0050.02111.68
5.3.70.0070.02411.68
5.3.60.0080.02211.67
5.3.50.0050.02711.64
5.3.40.0030.02611.64
5.3.30.0110.02511.61
5.3.20.0070.02311.49
5.3.10.0110.01911.47
5.3.00.0040.02311.47
5.2.170.0050.0309.15
5.2.160.0100.0359.16
5.2.150.0060.0329.15
5.2.140.0080.0289.14
5.2.130.0050.0289.11
5.2.120.0040.0349.11
5.2.110.0060.0309.11
5.2.100.0090.0289.11
5.2.90.0030.0329.11
5.2.80.0040.0379.11
5.2.70.0090.0289.10
5.2.60.0090.0379.06
5.2.50.0130.0629.03
5.2.40.0120.0349.00
5.2.30.0060.0408.98
5.2.20.0040.0328.96
5.2.10.0120.0328.90
5.2.00.0070.0388.76
5.1.60.0130.0328.05
5.1.50.0090.0378.05
5.1.40.0040.0348.02
5.1.30.0070.0338.37
5.1.20.0050.0358.39
5.1.10.0080.0268.12
5.1.00.0090.0268.13
5.0.50.0040.0246.59
5.0.40.0050.0286.46
5.0.30.0060.0456.27
5.0.20.0040.0266.25
5.0.10.0040.0296.22
5.0.00.0050.0376.21
4.4.90.0020.0234.78
4.4.80.0050.0204.76
4.4.70.0060.0154.76
4.4.60.0030.0174.75
4.4.50.0040.0164.77
4.4.40.0080.0234.71
4.4.30.0070.0214.76
4.4.20.0060.0184.84
4.4.10.0060.0274.85
4.4.00.0030.0324.76
4.3.110.0070.0184.67
4.3.100.0030.0214.66
4.3.90.0040.0194.63
4.3.80.0040.0294.59
4.3.70.0040.0194.63
4.3.60.0040.0204.63
4.3.50.0030.0164.63
4.3.40.0040.0254.54
4.3.30.0030.0203.27
4.3.20.0040.0203.25
4.3.10.0060.0173.22
4.3.00.0170.0176.81

preferences:
47.75 ms | 400 KiB | 5 Q