3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr('abcdefgh', -4, -2);

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)
8.3.70.0090.00616.58
8.3.60.0090.00518.02
8.3.50.0130.00922.05
8.3.40.0110.00418.73
8.3.30.0070.00718.92
8.3.20.0040.00420.04
8.3.10.0070.00023.52
8.3.00.0000.00917.79
8.2.180.0070.01418.17
8.2.170.0030.01018.96
8.2.160.0060.00922.96
8.2.150.0040.00425.66
8.2.140.0070.00024.66
8.2.130.0070.00026.16
8.2.120.0070.00021.04
8.2.110.0000.01622.13
8.2.100.0040.00818.03
8.2.90.0040.00419.17
8.2.80.0040.00417.97
8.2.70.0040.00417.38
8.2.60.0000.00717.90
8.2.50.0000.00818.07
8.2.40.0090.00019.82
8.2.30.0080.00418.27
8.2.20.0000.00717.53
8.2.10.0020.00517.92
8.2.00.0050.00317.63
8.1.280.0100.00325.92
8.1.270.0150.00323.76
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00623.83
8.1.230.0070.00419.10
8.1.220.0040.00417.74
8.1.210.0030.00518.77
8.1.200.0080.00017.23
8.1.190.0050.00316.98
8.1.180.0030.00618.10
8.1.170.0040.00418.65
8.1.160.0040.00421.90
8.1.150.0000.00718.79
8.1.140.0040.00417.28
8.1.130.0030.00317.69
8.1.120.0000.00717.31
8.1.110.0030.00617.32
8.1.100.0040.00417.34
8.1.90.0050.00317.21
8.1.80.0030.00717.24
8.1.70.0000.00717.22
8.1.60.0070.00317.43
8.1.50.0040.00417.38
8.1.40.0070.00017.35
8.1.30.0000.00817.47
8.1.20.0040.00417.42
8.1.10.0000.00717.36
8.1.00.0080.00017.25
8.0.300.0000.00718.77
8.0.290.0040.00416.58
8.0.280.0030.00318.26
8.0.270.0000.00817.24
8.0.260.0070.00017.16
8.0.250.0030.00316.76
8.0.240.0050.00516.92
8.0.230.0000.00716.84
8.0.220.0030.00316.80
8.0.210.0000.00616.77
8.0.200.0070.00016.75
8.0.190.0070.00016.68
8.0.180.0070.00016.74
8.0.170.0000.00716.78
8.0.160.0030.00316.78
8.0.150.0070.00016.69
8.0.140.0040.00416.61
8.0.130.0000.00713.23
8.0.120.0050.00316.73
8.0.110.0050.00216.65
8.0.100.0030.00316.57
8.0.90.0070.00016.63
8.0.80.0060.00916.77
8.0.70.0000.00716.58
8.0.60.0040.00416.69
8.0.50.0050.00316.79
8.0.30.0140.00817.00
8.0.20.0110.01117.40
8.0.10.0040.00416.82
8.0.00.0060.01116.64
7.4.330.0000.00615.00
7.4.320.0000.00616.37
7.4.300.0080.00016.26
7.4.290.0030.00316.46
7.4.280.0000.00616.40
7.4.270.0070.00016.38
7.4.260.0090.00016.24
7.4.250.0030.00416.23
7.4.240.0040.00416.31
7.4.230.0000.00716.28
7.4.220.0120.00716.32
7.4.210.0100.01016.47
7.4.200.0050.00216.36
7.4.160.0070.01016.34
7.4.150.0040.01417.40
7.4.140.0080.00917.86
7.4.130.0070.01116.40
7.4.120.0150.00816.50
7.4.110.0100.01016.25
7.4.100.0100.00716.49
7.4.90.0080.00816.34
7.4.80.0060.01919.39
7.4.70.0040.01216.25
7.4.60.0080.00816.34
7.4.50.0000.00616.34
7.4.40.0030.01716.30
7.4.30.0040.01216.26
7.4.00.0050.01314.74
7.3.330.0020.00213.04
7.3.320.0060.00013.06
7.3.310.0000.00715.96
7.3.300.0040.00416.11
7.3.290.0070.01316.16
7.3.280.0130.00516.16
7.3.270.0100.01017.40
7.3.260.0130.00316.19
7.3.250.0110.00616.22
7.3.240.0030.01716.38
7.3.230.0080.00816.53
7.3.210.0060.01016.01
7.3.200.0100.01019.39
7.3.190.0090.01316.20
7.3.180.0100.01016.33
7.3.170.0110.00516.42
7.3.160.0040.01116.38
7.3.120.0050.01214.79
7.3.110.0050.00514.77
7.3.100.0030.01614.59
7.3.90.0110.00414.95
7.3.80.0030.01414.76
7.3.70.0090.00314.59
7.3.60.0030.00614.58
7.3.50.0070.00414.68
7.3.40.0080.00414.34
7.3.30.0030.00914.86
7.3.20.0030.01016.59
7.3.10.0220.00915.80
7.3.00.0540.00315.54
7.2.330.0060.01316.31
7.2.320.0130.00316.18
7.2.310.0070.01016.25
7.2.300.0130.00316.61
7.2.290.0040.01116.48
7.2.250.0030.01714.78
7.2.240.0060.01314.69
7.2.230.0100.00315.11
7.2.220.0070.00715.14
7.2.210.0040.01414.91
7.2.200.0040.01114.75
7.2.190.0070.01014.99
7.2.180.0030.00714.65
7.2.170.0040.01114.67
7.2.160.0080.00814.73
7.2.150.0040.00816.64
7.2.140.0070.01016.74
7.2.130.0180.00915.79
7.2.120.0260.00715.78
7.2.110.0220.00915.83
7.2.100.0170.00615.78
7.2.90.0200.00815.92
7.2.80.0220.00815.74
7.2.70.0200.00515.81
7.2.60.0160.00816.05
7.2.50.0240.01115.96
7.2.40.0190.00215.85
7.2.30.0170.01115.96
7.2.20.0200.00416.31
7.2.10.0280.00816.44
7.2.00.0190.00616.32
7.1.330.0060.01215.69
7.1.320.0060.00915.73
7.1.310.0030.01215.57
7.1.300.0070.00415.63
7.1.290.0040.00415.33
7.1.280.0030.01015.55
7.1.270.0070.00315.85
7.1.260.0060.00615.58
7.1.250.0230.00614.72
7.1.240.0290.00614.70
7.1.230.0220.00914.61
7.1.220.0210.01014.89
7.1.210.0220.00914.69
7.1.200.0150.01014.97
7.1.190.0180.00814.67
7.1.180.0210.00814.77
7.1.170.0270.00714.62
7.1.160.0180.00514.70
7.1.150.0300.00414.48
7.1.140.0210.00815.34
7.1.130.0230.00915.16
7.1.120.0180.00715.21
7.1.110.0240.00715.13
7.1.100.0230.00614.97
7.1.90.0170.00815.19
7.1.80.0230.00914.82
7.1.70.0540.00815.41
7.1.60.0180.01120.59
7.1.50.0200.01019.62
7.1.40.0230.01120.79
7.1.30.0280.00920.72
7.1.20.0250.01120.72
7.1.10.0250.00714.63
7.1.00.0180.02616.64
7.0.330.0440.00913.34
7.0.320.0540.00313.29
7.0.310.0490.00413.42
7.0.300.0410.00313.38
7.0.290.0440.01013.39
7.0.280.0330.00813.24
7.0.270.0290.01114.86
7.0.260.0320.00414.80
7.0.250.0330.00514.46
7.0.240.0310.01114.59
7.0.230.0240.00714.53
7.0.220.0350.00714.51
7.0.210.0310.00814.17
7.0.200.0260.00714.98
7.0.190.0290.01214.11
7.0.180.0290.01113.79
7.0.170.0350.00713.88
7.0.160.0310.01413.75
7.0.150.0320.00713.89
7.0.140.0210.02916.67
7.0.130.0420.00813.94
7.0.120.0320.00914.06
7.0.110.0310.01014.02
7.0.100.0310.03015.87
7.0.90.0340.02615.85
7.0.80.0370.03015.92
7.0.70.0230.01915.80
7.0.60.0250.01915.78
7.0.50.0270.01316.06
7.0.40.0320.01616.02
7.0.30.0250.01916.02
7.0.20.0380.02116.05
7.0.10.0220.02016.08
7.0.00.0270.01515.99
5.6.380.0150.00614.06
5.6.370.0090.00914.11
5.6.360.0070.00714.03
5.6.350.0100.01014.05
5.6.340.0170.00314.13
5.6.330.0150.01114.34
5.6.320.0110.01114.33
5.6.310.0180.00414.25
5.6.300.0160.03217.26
5.6.290.0140.04317.29
5.6.280.0080.04618.56
5.6.270.0110.04017.49
5.6.260.0100.03417.44
5.6.250.0110.04718.58
5.6.240.0160.04318.54
5.6.230.0150.05418.44
5.6.220.0120.04318.58
5.6.210.0100.04018.49
5.6.200.0120.03718.68
5.6.190.0100.04018.71
5.6.180.0160.02918.73
5.6.170.0120.03318.66
5.6.160.0160.04018.67
5.6.150.0110.03818.79
5.6.140.0100.04218.67
5.6.130.0090.04318.52
5.6.120.0120.03518.65
5.6.110.0130.03218.54
5.6.100.0080.03718.53
5.6.90.0110.03618.70
5.6.80.0150.02818.18
5.6.70.0130.03218.22
5.6.60.0120.03318.29
5.6.50.0120.03318.07
5.6.40.0170.03018.19
5.6.30.0080.03418.26
5.6.20.0100.03218.21
5.6.10.0120.03518.21
5.6.00.0070.03418.16
5.5.380.0060.04816.21
5.5.370.0160.03716.17
5.5.360.0090.04416.22
5.5.350.0130.03216.32
5.5.340.0100.03516.50
5.5.330.0080.03216.54
5.5.320.0090.03516.44
5.5.310.0100.03316.49
5.5.300.0160.03416.58
5.5.290.0090.03616.56
5.5.280.0120.04516.41
5.5.270.0090.03416.40
5.5.260.0090.03316.51
5.5.250.0120.03316.25
5.5.240.0070.03416.07
5.5.230.0080.03216.05
5.5.220.0100.03316.02
5.5.210.0070.03716.07
5.5.200.0100.03216.03
5.5.190.0110.03016.08
5.5.180.0090.03116.09
5.5.170.0130.00010.90
5.5.160.0080.03416.11
5.5.150.0090.03015.94
5.5.140.0080.03316.02
5.5.130.0110.04216.08
5.5.120.0030.03816.05
5.5.110.0100.03615.95
5.5.100.0150.03516.12
5.5.90.0080.05616.01
5.5.80.0150.04615.95
5.5.70.0160.04216.08
5.5.60.0100.04716.04
5.5.50.0080.05015.97
5.5.40.0080.04515.93
5.5.30.0120.04316.00
5.5.20.0060.05116.09
5.5.10.0150.05316.04
5.5.00.0130.04616.02
5.4.450.0080.03716.62
5.4.440.0100.04016.44
5.4.430.0120.03616.39
5.4.420.0110.03216.43
5.4.410.0070.03216.34
5.4.400.0050.03516.25
5.4.390.0100.03716.24
5.4.380.0080.03316.19
5.4.370.0060.03316.17
5.4.360.0070.04116.13
5.4.350.0090.03016.17
5.4.340.0070.03216.08
5.4.330.0140.00010.70
5.4.320.0130.03716.17
5.4.310.0090.03316.15
5.4.300.0070.04116.25
5.4.290.0060.03716.27
5.4.280.0070.03916.25
5.4.270.0070.04716.32
5.4.260.0110.04816.17
5.4.250.0080.05416.29
5.4.240.0090.04616.20
5.4.230.0100.04116.28
5.4.220.0050.05216.36
5.4.210.0080.04616.19
5.4.200.0090.04516.15
5.4.190.0090.04216.25
5.4.180.0100.04516.19
5.4.170.0080.04816.15
5.4.160.0150.04516.16
5.4.150.0090.03916.28
5.4.140.0150.03514.49
5.4.130.0080.04814.51
5.4.120.0080.04214.52
5.4.110.0070.04614.48
5.4.100.0080.04714.51
5.4.90.0110.03414.51
5.4.80.0090.04314.48
5.4.70.0090.04814.45
5.4.60.0120.04114.44
5.4.50.0080.04414.46
5.4.40.0080.03814.54
5.4.30.0050.04714.58
5.4.20.0100.04214.38
5.4.10.0100.04214.50
5.4.00.0170.03614.08
5.3.290.0030.03713.24
5.3.280.0180.02413.09
5.3.270.0090.04513.05
5.3.260.0100.04313.22
5.3.250.0060.04513.14
5.3.240.0090.05013.19
5.3.230.0130.03813.21
5.3.220.0080.05013.10
5.3.210.0070.04613.01
5.3.200.0100.03612.96
5.3.190.0100.04213.09
5.3.180.0100.04413.16
5.3.170.0050.04713.08
5.3.160.0080.05013.16
5.3.150.0070.04413.13
5.3.140.0130.04013.04
5.3.130.0130.03313.16
5.3.120.0080.03613.18
5.3.110.0060.04113.12
5.3.100.0090.04312.80
5.3.90.0090.04312.66
5.3.80.0090.04212.74
5.3.70.0120.04212.73
5.3.60.0080.03912.72
5.3.50.0080.04112.64
5.3.40.0100.04012.75
5.3.30.0090.03312.72
5.3.20.0110.03412.56
5.3.10.0100.03912.41
5.3.00.0030.04712.44

preferences:
49.14 ms | 401 KiB | 5 Q