3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = "12345"; echo substr($var, 0);

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)
8.3.40.0120.00618.46
8.3.30.0040.01118.59
8.3.20.0040.00418.66
8.3.10.0080.00020.52
8.3.00.0070.00021.94
8.2.170.0090.00622.96
8.2.160.0100.00320.43
8.2.150.0000.00724.18
8.2.140.0030.00624.66
8.2.130.0000.00826.16
8.2.120.0080.00019.36
8.2.110.0030.00721.12
8.2.100.0120.00017.72
8.2.90.0050.00219.04
8.2.80.0020.00517.97
8.2.70.0050.00317.63
8.2.60.0000.00817.93
8.2.50.0000.00818.07
8.2.40.0000.00818.09
8.2.30.0060.00319.89
8.2.20.0000.00717.69
8.2.10.0040.00417.62
8.2.00.0070.00017.49
8.1.270.0070.00023.99
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0000.01022.47
8.1.230.0080.00420.91
8.1.220.0040.00418.77
8.1.210.0030.00518.77
8.1.200.0090.00017.23
8.1.190.0070.00017.41
8.1.180.0080.00018.10
8.1.170.0040.00418.70
8.1.160.0040.00418.68
8.1.150.0030.00518.56
8.1.140.0000.00717.29
8.1.130.0030.00317.73
8.1.120.0000.00717.45
8.1.110.0040.00317.25
8.1.100.0020.00517.38
8.1.90.0040.00417.27
8.1.80.0000.00717.37
8.1.70.0070.00017.32
8.1.60.0040.00417.39
8.1.50.0000.00817.39
8.1.40.0000.00717.49
8.1.30.0040.00417.56
8.1.20.0040.00417.62
8.1.10.0040.00417.58
8.1.00.0040.00417.30
8.0.300.0040.00419.91
8.0.290.0000.00716.75
8.0.280.0000.00718.42
8.0.270.0030.00317.16
8.0.260.0000.00616.83
8.0.250.0040.00417.00
8.0.240.0030.00616.99
8.0.230.0040.00416.88
8.0.220.0070.00016.85
8.0.210.0040.00416.72
8.0.200.0030.00316.84
8.0.190.0000.00716.84
8.0.180.0000.00716.73
8.0.170.0000.00916.80
8.0.160.0060.00316.84
8.0.150.0050.00316.86
8.0.140.0070.00016.78
8.0.130.0050.00013.20
8.0.120.0000.00816.80
8.0.110.0000.00716.67
8.0.100.0040.00416.84
8.0.90.0040.00416.61
8.0.80.0060.00916.79
8.0.70.0000.00816.72
8.0.60.0050.00216.85
8.0.50.0040.00416.63
8.0.30.0060.01217.05
8.0.20.0110.00817.40
8.0.10.0000.00716.87
8.0.00.0120.00916.61
7.4.330.0000.00713.43
7.4.320.0030.00316.51
7.4.300.0030.00316.40
7.4.290.0030.00316.43
7.4.280.0030.00316.57
7.4.270.0060.00016.55
7.4.260.0060.00013.27
7.4.250.0030.00616.41
7.4.240.0000.00716.52
7.4.230.0030.00316.49
7.4.220.0150.00316.57
7.4.210.0070.01016.52
7.4.200.0040.00416.59
7.4.190.0030.00316.69
7.4.160.0120.00616.39
7.4.150.0070.01117.40
7.4.140.0140.00317.86
7.4.130.0100.00716.34
7.4.120.0140.00616.41
7.4.110.0120.01216.30
7.4.100.0090.01216.56
7.4.90.0060.01216.49
7.4.80.0060.01119.04
7.4.70.0120.00816.50
7.4.60.0040.01216.19
7.4.50.0050.00016.21
7.4.40.0060.00722.27
7.4.30.0090.00816.41
7.4.00.0070.01015.01
7.3.330.0050.00013.05
7.3.320.0040.00413.04
7.3.310.0040.00415.98
7.3.300.0040.00416.04
7.3.290.0090.00416.12
7.3.280.0050.01216.10
7.3.270.0050.01117.40
7.3.260.0120.00918.24
7.3.250.0070.01216.22
7.3.240.0070.01016.44
7.3.230.0050.01016.45
7.3.210.0030.01316.10
7.3.200.0110.00419.39
7.3.190.0000.01716.44
7.3.180.0080.00816.34
7.3.170.0040.01116.38
7.3.160.0100.00616.43
7.3.120.0120.00014.43
7.2.330.0070.01116.63
7.2.320.0130.00316.22
7.2.310.0060.01216.50
7.2.300.0060.01616.26
7.2.290.0070.01016.59
7.2.00.0040.00919.38
7.1.100.0030.01118.10
7.1.70.0040.00416.94
7.1.60.0070.01619.40
7.1.50.0100.00734.67
7.1.00.0030.07322.32
7.0.200.0000.00716.63
7.0.140.0000.07722.07
7.0.60.0100.06320.01
7.0.50.0070.08317.85
7.0.40.0030.08317.78
7.0.30.0000.05317.69
7.0.20.0100.08317.77
7.0.10.0070.05717.77
7.0.00.0100.08017.70
5.6.280.0000.07721.03
5.6.210.0100.08720.66
5.6.200.0070.09018.15
5.6.190.0070.05718.18
5.6.180.0100.06718.16
5.6.170.0070.08718.08
5.6.160.0030.08018.15
5.6.150.0100.06318.12
5.6.140.0100.05318.20
5.6.130.0100.08318.15
5.6.120.0100.08018.20
5.6.110.0070.05718.21
5.6.100.0030.06318.18
5.6.90.0000.08718.16
5.6.80.0200.06717.54
5.6.70.0100.06717.59
5.6.60.0070.08017.55
5.6.50.0070.07717.49
5.6.40.0070.05317.54
5.6.30.0070.03717.58
5.6.20.0000.04017.47
5.6.10.0030.03717.57
5.6.00.0030.04017.49
5.5.350.0030.06020.40
5.5.340.0100.08018.02
5.5.330.0070.04717.96
5.5.320.0130.07717.92
5.5.310.0030.08317.96
5.5.300.0100.04018.02
5.5.290.0070.07317.88
5.5.280.0070.08017.92
5.5.270.0170.04017.99
5.5.260.0100.08018.01
5.5.250.0070.07717.72
5.5.240.0100.06717.30
5.5.230.0000.06717.34
5.5.220.0100.06717.28
5.5.210.0100.06017.36
5.5.200.0000.04317.25
5.5.190.0000.04017.33
5.5.180.0100.03317.24
5.5.160.0000.04717.32
5.5.150.0030.03717.37
5.5.140.0070.04017.37
5.5.130.0030.03717.30
5.5.120.0030.03717.26
5.5.110.0070.07717.27
5.5.100.0000.05017.22
5.5.90.0070.03317.28
5.5.80.0070.03317.13
5.5.70.0070.03317.11
5.5.60.0030.03717.24
5.5.50.0030.03717.25
5.5.40.0000.04017.16
5.5.30.0070.03317.21
5.5.20.0070.03317.18
5.5.10.0100.03017.21
5.5.00.0100.03017.18
5.4.450.0000.04719.41
5.4.440.0070.07019.36
5.4.430.0100.07019.54
5.4.420.0070.07719.30
5.4.410.0070.05019.32
5.4.400.0030.04319.08
5.4.390.0030.08018.95
5.4.380.0130.06019.03
5.4.370.0100.07718.98
5.4.360.0070.05718.99
5.4.350.0070.03718.89
5.4.340.0030.03718.99
5.4.320.0000.04019.13
5.4.310.0070.03719.09
5.4.300.0000.04018.98
5.4.290.0000.04019.00
5.4.280.0000.05319.03
5.4.270.0070.03718.98
5.4.260.0070.06718.94
5.4.250.0070.03319.00
5.4.240.0000.04018.88
5.4.230.0100.03019.03
5.4.220.0030.03719.08
5.4.210.0070.03718.95
5.4.200.0070.03319.06
5.4.190.0000.04018.99
5.4.180.0070.03319.20
5.4.170.0000.04018.95
5.4.160.0030.03719.09
5.4.150.0000.04019.05
5.4.140.0000.03716.29
5.4.130.0070.03316.32
5.4.120.0030.03716.24
5.4.110.0000.03716.36
5.4.100.0000.03716.31
5.4.90.0000.03716.41
5.4.80.0030.03716.28
5.4.70.0100.04316.24
5.4.60.0030.04316.36
5.4.50.0070.04716.38
5.4.40.0030.03716.41
5.4.30.0070.05716.25
5.4.20.0070.03316.22
5.4.10.0030.05716.25
5.4.00.0030.07315.77
5.3.290.0030.03714.61
5.3.280.0070.03314.56
5.3.270.0070.03314.43
5.3.260.0070.03714.43
5.3.250.0030.03314.46
5.3.240.0070.03714.56
5.3.230.0070.03714.57
5.3.220.0000.05314.52
5.3.210.0070.03314.50
5.3.200.0000.03714.48
5.3.190.0030.03714.52
5.3.180.0030.03314.38
5.3.170.0000.05314.48
5.3.160.0030.04014.55
5.3.150.0170.06314.49
5.3.140.0130.06714.52
5.3.130.0070.06314.37
5.3.120.0130.05314.49
5.3.110.0030.04314.46
5.3.100.0130.07014.11
5.3.90.0030.03713.95
5.3.80.0070.07313.96
5.3.70.0000.06313.93
5.3.60.0130.06713.96
5.3.50.0030.07313.91
5.3.40.0100.07713.92
5.3.30.0100.06713.90
5.3.20.0070.06713.62
5.3.10.0070.04713.63
5.3.00.0130.06713.57
5.2.170.0030.05711.22
5.2.160.0000.05011.22
5.2.150.0030.06011.22
5.2.140.0030.05711.22
5.2.130.0030.06011.22
5.2.120.0030.06311.22
5.2.110.0100.05711.22
5.2.100.0070.06311.22
5.2.90.0070.05711.22
5.2.80.0000.05311.22
5.2.70.0070.06311.22
5.2.60.0030.05711.22
5.2.50.0130.05711.22
5.2.40.0070.06011.22
5.2.30.0070.06311.22
5.2.20.0070.06011.22
5.2.10.0070.03311.22
5.2.00.0030.04311.22
5.1.60.0030.05311.22
5.1.50.0000.05011.22
5.1.40.0070.02711.22
5.1.30.0000.04711.22
5.1.20.0070.05311.22
5.1.10.0030.04711.22
5.1.00.0100.02011.22
5.0.50.0070.04011.22
5.0.40.0070.04711.22
5.0.30.0070.06311.22
5.0.20.0100.03711.22
5.0.10.0030.02011.22
5.0.00.0030.05011.22
4.4.90.0000.03711.22
4.4.80.0070.01711.22
4.4.70.0030.01711.22
4.4.60.0000.03711.22
4.4.50.0030.03311.22
4.4.40.0000.05711.22
4.4.30.0000.02311.22
4.4.20.0070.03311.22
4.4.10.0030.03311.22
4.4.00.0030.05311.22
4.3.110.0070.03311.22
4.3.100.0000.04011.22
4.3.90.0030.03711.22
4.3.80.0030.05711.22
4.3.70.0030.03311.22
4.3.60.0030.03311.22
4.3.50.0070.02011.22
4.3.40.0000.05311.22
4.3.30.0000.03711.22
4.3.20.0030.03011.22
4.3.10.0030.02711.22
4.3.00.0030.03011.22

preferences:
44.17 ms | 400 KiB | 5 Q