3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "abc"; echo substr($a, 0, -1);

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)
8.3.40.0090.00518.48
8.3.30.0100.00318.92
8.3.20.0040.00420.16
8.3.10.0040.00423.65
8.3.00.0040.00419.16
8.2.170.0070.00722.96
8.2.160.0100.00320.39
8.2.150.0040.00424.18
8.2.140.0060.01224.66
8.2.130.0070.00026.16
8.2.120.0030.00719.16
8.2.110.0080.00022.16
8.2.100.0000.01119.63
8.2.90.0000.00719.22
8.2.80.0080.00017.97
8.2.70.0030.00617.50
8.2.60.0060.00317.93
8.2.50.0050.00518.07
8.2.40.0040.00418.34
8.2.30.0080.00018.23
8.2.20.0000.00817.54
8.2.10.0000.00817.93
8.2.00.0040.00417.62
8.1.270.0030.00622.19
8.1.260.0030.00526.35
8.1.250.0080.00028.09
8.1.240.0060.00323.79
8.1.230.0070.00419.16
8.1.220.0000.00917.76
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0030.00517.22
8.1.180.0040.00418.10
8.1.170.0060.00618.56
8.1.160.0040.00422.00
8.1.150.0050.00218.63
8.1.140.0070.00017.30
8.1.130.0030.00317.82
8.1.120.0070.00017.41
8.1.110.0070.00017.30
8.1.100.0000.00717.29
8.1.90.0030.00617.43
8.1.80.0050.00217.39
8.1.70.0070.00017.32
8.1.60.0000.00917.36
8.1.50.0000.00817.41
8.1.40.0070.00317.46
8.1.30.0000.00917.56
8.1.20.0040.00417.63
8.1.10.0030.00617.54
8.1.00.0000.00917.49
8.0.300.0000.00718.77
8.0.290.0000.00817.18
8.0.280.0030.00318.38
8.0.270.0000.00717.20
8.0.260.0060.00017.25
8.0.250.0030.00316.96
8.0.240.0000.00816.99
8.0.230.0050.00216.75
8.0.220.0000.00716.87
8.0.210.0070.00016.72
8.0.200.0000.00616.81
8.0.190.0020.00516.82
8.0.180.0000.00716.77
8.0.170.0040.00416.84
8.0.160.0040.00416.87
8.0.150.0050.00216.80
8.0.140.0040.00416.77
8.0.130.0030.00313.25
8.0.120.0040.00416.73
8.0.110.0040.00416.74
8.0.100.0080.00016.61
8.0.90.0080.00016.89
8.0.80.0120.00316.78
8.0.70.0040.00416.64
8.0.60.0000.00716.85
8.0.50.0000.00716.66
8.0.30.0130.01016.89
8.0.20.0090.01017.40
8.0.10.0000.00816.82
8.0.00.0110.00816.68
7.4.330.0000.00515.00
7.4.320.0030.00316.44
7.4.300.0030.00316.45
7.4.290.0000.00716.57
7.4.280.0000.00816.57
7.4.270.0030.00316.56
7.4.260.0000.00716.54
7.4.250.0000.00716.51
7.4.240.0050.00216.45
7.4.230.0030.00316.64
7.4.220.0100.01416.56
7.4.210.0070.01316.46
7.4.200.0000.00716.64
7.4.190.0000.00716.58
7.4.160.0140.00716.34
7.4.150.0090.00917.40
7.4.140.0060.01317.86
7.4.130.0110.00816.49
7.4.120.0130.00316.43
7.4.110.0120.00916.35
7.4.100.0100.00716.32
7.4.90.0100.01316.40
7.4.80.0060.01319.39
7.4.70.0110.00716.60
7.4.60.0060.01216.45
7.4.50.0040.00416.24
7.4.40.0090.00616.62
7.4.30.0050.01016.34
7.4.00.0090.00914.93
7.3.330.0040.00413.12
7.3.320.0050.00013.07
7.3.310.0030.00316.27
7.3.300.0030.00316.17
7.3.290.0040.01116.13
7.3.280.0090.01016.17
7.3.270.0100.00717.40
7.3.260.0130.00316.40
7.3.250.0080.01016.34
7.3.240.0090.00916.24
7.3.230.0080.00816.43
7.3.210.0170.01316.19
7.3.200.0130.00719.39
7.3.190.0100.00716.35
7.3.180.0070.00716.23
7.3.170.0000.01516.31
7.3.160.0090.00616.28
7.3.120.0040.01114.71
7.3.110.0030.01414.88
7.3.100.0100.00714.77
7.3.90.0070.01014.69
7.3.80.0060.00614.73
7.3.70.0090.00614.53
7.3.60.0040.00814.54
7.3.50.0090.00314.76
7.3.40.0090.00614.76
7.3.30.0100.00614.55
7.3.20.0000.01016.50
7.3.10.0040.00716.34
7.3.00.0000.01516.40
7.2.330.0040.01216.53
7.2.320.0070.01016.58
7.2.310.0100.00716.17
7.2.300.0030.01316.36
7.2.290.0080.01016.49
7.2.250.0110.00715.00
7.2.240.0030.01314.89
7.2.230.0000.01814.83
7.2.220.0060.00315.17
7.2.210.0060.00614.92
7.2.200.0040.01114.94
7.2.190.0120.00315.02
7.2.180.0070.00714.68
7.2.170.0090.00614.87
7.2.160.0060.01214.87
7.2.150.0040.00716.93
7.2.140.0100.00016.91
7.2.130.0080.00416.80
7.2.120.0090.00916.57
7.2.110.0040.00716.69
7.2.100.0090.00616.98
7.2.90.0070.01117.02
7.2.80.0070.01016.84
7.2.70.0030.00916.70
7.2.60.0060.00616.97
7.2.50.0040.01116.72
7.2.40.0140.00416.73
7.2.30.0080.00516.50
7.2.20.0070.01016.66
7.2.10.0060.00916.78
7.2.00.0000.01416.87
7.1.330.0030.00815.80
7.1.320.0000.01115.45
7.1.310.0100.00315.62
7.1.300.0040.01115.60
7.1.290.0060.00615.76
7.1.280.0040.00815.73
7.1.270.0070.00715.91
7.1.260.0100.00315.65
7.1.250.0040.00815.66
7.1.240.0100.00715.78
7.1.230.0060.00615.70
7.1.220.0030.01115.57
7.1.210.0080.00615.54
7.1.200.0000.01215.51
7.1.190.0070.00415.77
7.1.180.0070.00315.48
7.1.170.0040.01115.69
7.1.160.0070.00715.71
7.1.150.0000.00915.74
7.1.140.0000.01315.57
7.1.130.0000.01315.59
7.1.120.0040.00815.71
7.1.110.0040.00715.69
7.1.100.0060.00615.44
7.1.90.0070.00415.68
7.1.80.0000.00815.75
7.1.70.0050.00516.34
7.1.60.0050.01317.74
7.1.50.0120.00516.33
7.1.40.0090.00615.66
7.1.30.0030.01215.46
7.1.20.0150.00015.73
7.1.10.0070.00715.65
7.1.00.0090.03719.13
7.0.330.0090.00315.30
7.0.320.0040.00415.32
7.0.310.0040.01115.48
7.0.300.0040.00815.39
7.0.290.0090.00615.45
7.0.280.0100.00315.33
7.0.270.0070.00715.59
7.0.260.0030.00615.19
7.0.250.0000.01315.57
7.0.240.0040.00415.18
7.0.230.0140.00015.37
7.0.220.0030.00715.24
7.0.210.0040.01215.15
7.0.200.0040.00716.03
7.0.190.0030.00715.52
7.0.180.0090.00315.61
7.0.170.0060.00315.32
7.0.160.0060.00615.36
7.0.150.0030.00915.49
7.0.140.0050.03918.73
7.0.130.0070.00715.13
7.0.120.0000.00915.12
7.0.110.0070.00415.25
7.0.100.0070.01015.39
7.0.90.0070.00715.31
7.0.80.0080.00315.12
7.0.70.0040.01115.53
7.0.60.0080.04617.62
7.0.50.0030.02716.58
7.0.40.0060.04616.67
7.0.30.0150.04216.78
7.0.20.0150.03216.74
7.0.10.0070.04816.64
7.0.00.0040.02316.78
5.6.400.0040.01114.59
5.6.390.0120.00314.55
5.6.380.0060.00614.16
5.6.370.0040.00714.05
5.6.360.0120.00314.43
5.6.350.0060.00914.52
5.6.340.0080.00414.23
5.6.330.0080.00814.18
5.6.320.0030.00914.43
5.6.310.0070.01114.23
5.6.300.0060.00614.33
5.6.290.0070.01013.91
5.6.280.0050.04117.69
5.6.270.0040.01214.09
5.6.260.0060.00614.16
5.6.250.0070.00714.36
5.6.240.0000.01314.17
5.6.230.0030.00714.41
5.6.220.0080.00014.09
5.6.210.0110.03717.38
5.6.200.0100.03816.09
5.6.190.0110.03117.38
5.6.180.0050.03117.33
5.6.170.0170.04517.37
5.6.160.0100.03917.23
5.6.150.0100.04116.16
5.6.140.0080.02016.25
5.6.130.0050.04816.19
5.6.120.0080.02017.67
5.6.110.0040.05217.80
5.6.100.0070.04217.68
5.6.90.0070.03617.65
5.6.80.0020.03517.26
5.6.70.0090.00314.23
5.6.60.0090.00613.99
5.6.50.0000.01013.97
5.6.40.0100.00314.22
5.6.30.0130.00314.18
5.6.20.0060.01014.09
5.6.10.0000.00813.95
5.6.00.0030.01314.29
5.5.380.0070.00713.80
5.5.370.0100.00314.00
5.5.360.0000.01314.29
5.5.350.0060.04517.36
5.5.340.0060.02816.14
5.5.330.0070.04417.21
5.5.320.0170.03517.16
5.5.310.0100.04717.17
5.5.300.0070.04315.88
5.5.290.0030.04816.16
5.5.280.0060.04817.63
5.5.270.0090.03017.47
5.5.260.0110.04217.67
5.5.250.0000.04817.25
5.5.240.0050.02117.10
5.5.230.0080.00414.16
5.5.220.0040.00713.97
5.5.210.0030.01014.22
5.5.200.0140.00013.91
5.5.190.0060.00614.21
5.5.180.0050.00514.23
5.5.170.0000.01313.91
5.5.160.0060.00914.05
5.5.150.0070.01014.16
5.5.140.0040.00814.26
5.5.130.0090.00314.05
5.5.120.0000.01814.14
5.5.110.0000.01714.00
5.5.100.0000.01414.29
5.5.90.0030.01013.97
5.5.80.0000.01314.04
5.5.70.0040.01114.26
5.5.60.0070.00713.99
5.5.50.0060.00614.11
5.5.40.0000.01314.08
5.5.30.0050.00313.80
5.5.20.0120.00314.20
5.5.10.0110.00314.09
5.5.00.0030.00613.69
5.4.450.0190.02215.24
5.4.440.0180.02015.09
5.4.430.0080.02015.14
5.4.420.0170.02315.04
5.4.410.0120.02515.12
5.4.400.0150.01814.93
5.4.390.0160.02114.85
5.4.380.0170.03714.63
5.4.370.0130.03814.72
5.4.360.0200.02714.54
5.4.350.0230.02314.78
5.4.340.0220.03114.77
5.4.330.0000.01310.93
5.4.320.0070.02111.63
5.4.310.0060.02411.63
5.4.300.0060.02811.59
5.4.290.0070.02811.50
5.4.280.0090.02311.60
5.4.270.0130.04811.61
5.4.260.0060.03111.41
5.4.250.0070.03311.53
5.4.240.0080.02911.56
5.4.230.0070.05011.54
5.4.220.0090.04411.51
5.4.210.0100.04611.67
5.4.200.0120.04411.62
5.4.190.0040.02811.54
5.4.180.0080.01911.54
5.4.170.0100.03011.58
5.4.160.0070.02211.54
5.4.150.0050.02411.44
5.4.140.0090.04711.35
5.4.130.0120.01811.37
5.4.120.0090.02211.46
5.4.110.0040.02511.39
5.4.100.0050.03011.29
5.4.90.0060.02311.47
5.4.80.0050.02511.27
5.4.70.0030.02111.36
5.4.60.0050.02411.45
5.4.50.0060.01911.49
5.4.40.0050.02411.45
5.4.30.0080.02311.45
5.4.20.0060.02211.28
5.4.10.0050.02211.30
5.4.00.0090.02311.04
5.3.290.0070.02111.70
5.3.280.0040.02611.59
5.3.270.0080.03111.60
5.3.260.0020.03211.60
5.3.250.0080.02811.60
5.3.240.0070.04011.60
5.3.230.0070.02611.59
5.3.220.0080.03011.58
5.3.210.0050.03311.58
5.3.200.0090.03211.58
5.3.190.0060.02511.58
5.3.180.0030.03011.58
5.3.170.0060.02711.57
5.3.160.0050.02511.58
5.3.150.0040.03211.57
5.3.140.0060.03711.57
5.3.130.0070.03511.57
5.3.120.0110.03611.57
5.3.110.0080.02711.57
5.3.100.0090.02811.30
5.3.90.0050.02311.31
5.3.80.0080.02111.28
5.3.70.0040.02911.28
5.3.60.0040.02911.27
5.3.50.0080.02811.24
5.3.40.0070.02211.24
5.3.30.0070.02111.21
5.3.20.0080.02411.10
5.3.10.0070.02311.08
5.3.00.0040.02311.08
5.2.170.0050.0329.18
5.2.160.0070.0329.18
5.2.150.0080.0459.18
5.2.140.0080.0389.17
5.2.130.0070.0309.14
5.2.120.0050.0299.13
5.2.110.0030.0319.14
5.2.100.0070.0279.13
5.2.90.0060.0309.13
5.2.80.0050.0359.13
5.2.70.0050.0309.13
5.2.60.0040.0339.08
5.2.50.0060.0319.05
5.2.40.0050.0389.03
5.2.30.0050.0429.00
5.2.20.0100.0428.99
5.2.10.0040.0358.92
5.2.00.0050.0308.77
5.1.60.0040.0258.06
5.1.50.0040.0278.06
5.1.40.0060.0288.04
5.1.30.0040.0278.39
5.1.20.0020.0298.41
5.1.10.0010.0298.14
5.1.00.0050.0258.14
5.0.50.0030.0276.61
5.0.40.0030.0286.47
5.0.30.0040.0406.28
5.0.20.0040.0266.25
5.0.10.0040.0256.23
5.0.00.0030.0326.22
4.4.90.0040.0144.78
4.4.80.0030.0154.75
4.4.70.0010.0174.75
4.4.60.0050.0164.75
4.4.50.0040.0154.77
4.4.40.0040.0244.71
4.4.30.0060.0144.76
4.4.20.0050.0204.84
4.4.10.0030.0154.85
4.4.00.0040.0234.76
4.3.110.0010.0174.67
4.3.100.0020.0154.66
4.3.90.0020.0164.64
4.3.80.0050.0324.59
4.3.70.0030.0154.63
4.3.60.0050.0134.63
4.3.50.0050.0144.63
4.3.40.0030.0264.54
4.3.30.0010.0183.28
4.3.20.0020.0193.26
4.3.10.0030.0193.21
4.3.00.0030.02018.64

preferences:
47.33 ms | 400 KiB | 5 Q