3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'a quick red fox jumped over the lazy brown dog'; $charFirst = substr($item, 0, 1); $charLast = substr($item, strlen($item) - 1, 1); echo $charFirst . PHP_EOL; echo $charLast . PHP_EOL;

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)
8.3.60.0090.00616.38
8.3.50.0090.00722.01
8.3.40.0170.00318.71
8.3.30.0000.01419.07
8.3.20.0000.00820.39
8.3.10.0070.00023.70
8.3.00.0080.00019.56
8.2.180.0070.01118.29
8.2.170.0110.00322.96
8.2.160.0030.01020.49
8.2.150.0080.00024.18
8.2.140.0000.00724.66
8.2.130.0040.00426.16
8.2.120.0040.00419.36
8.2.110.0090.00022.00
8.2.100.0070.00417.91
8.2.90.0040.00419.22
8.2.80.0000.00817.97
8.2.70.0050.00317.50
8.2.60.0050.00517.93
8.2.50.0030.00618.07
8.2.40.0040.00420.01
8.2.30.0040.00418.30
8.2.20.0040.00417.80
8.2.10.0050.00218.10
8.2.00.0000.00817.84
8.1.280.0100.01025.92
8.1.270.0000.01023.83
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00423.74
8.1.230.0040.00719.23
8.1.220.0090.00017.78
8.1.210.0000.00818.77
8.1.200.0060.00317.36
8.1.190.0080.00017.23
8.1.180.0000.00918.10
8.1.170.0040.00418.45
8.1.160.0070.00021.95
8.1.150.0040.00418.67
8.1.140.0000.00717.30
8.1.130.0000.00717.80
8.1.120.0050.00217.29
8.1.110.0000.00817.38
8.1.100.0040.00417.30
8.1.90.0000.00717.29
8.1.80.0000.00717.38
8.1.70.0000.00817.25
8.1.60.0000.00817.50
8.1.50.0000.00717.43
8.1.40.0000.00717.38
8.1.30.0040.00417.48
8.1.20.0040.00417.57
8.1.10.0040.00417.53
8.1.00.0030.00517.37
8.0.300.0000.00718.77
8.0.290.0000.00716.75
8.0.280.0070.00018.35
8.0.270.0070.00017.27
8.0.260.0030.00317.16
8.0.250.0030.00317.04
8.0.240.0000.01016.98
8.0.230.0030.00616.86
8.0.220.0070.00016.96
8.0.210.0020.00516.92
8.0.200.0000.00617.01
8.0.190.0040.00417.05
8.0.180.0080.00016.88
8.0.170.0030.00616.93
8.0.160.0050.00217.00
8.0.150.0050.00216.84
8.0.140.0030.00516.82
8.0.130.0000.00513.41
8.0.120.0080.00016.82
8.0.110.0040.00416.91
8.0.100.0000.00816.80
8.0.90.0040.00416.84
8.0.80.0060.01017.00
8.0.70.0030.00517.06
8.0.60.0030.00516.81
8.0.50.0080.00016.96
8.0.30.0130.01017.08
8.0.20.0160.00517.40
8.0.10.0000.00717.05
8.0.00.0060.01216.59
7.4.330.0030.00315.06
7.4.320.0050.00316.53
7.4.300.0040.00416.36
7.4.290.0030.00316.46
7.4.280.0030.00616.51
7.4.270.0000.00716.30
7.4.260.0080.00316.41
7.4.250.0000.00716.48
7.4.240.0020.00516.49
7.4.230.0070.00016.61
7.4.220.0060.01216.42
7.4.210.0070.00716.51
7.4.200.0040.00416.34
7.4.160.0120.00616.58
7.4.150.0060.01517.40
7.4.140.0100.01117.86
7.4.130.0090.00816.48
7.4.120.0130.00316.54
7.4.110.0130.00316.52
7.4.100.0030.01316.55
7.4.90.0070.01016.52
7.4.80.0100.01019.39
7.4.70.0100.00716.39
7.4.60.0070.01116.44
7.4.50.0040.00416.63
7.4.40.0040.01516.39
7.4.30.0150.00916.57
7.4.10.0000.01714.82
7.4.00.0060.01014.81
7.3.330.0000.00513.26
7.3.320.0020.00213.23
7.3.310.0050.00316.24
7.3.300.0000.00716.40
7.3.290.0100.00716.34
7.3.280.0090.00916.39
7.3.270.0130.00917.40
7.3.260.0170.00916.49
7.3.250.0050.01116.44
7.3.240.0090.00916.51
7.3.230.0110.00716.43
7.3.210.0100.00616.52
7.3.200.0060.01019.39
7.3.190.0080.00816.43
7.3.180.0100.00616.30
7.3.170.0120.00316.35
7.3.160.0060.01016.29
7.3.130.0120.00314.83
7.3.120.0090.00514.62
7.3.110.0160.00314.79
7.3.100.0000.01514.88
7.3.90.0100.00714.86
7.3.80.0100.00314.70
7.3.70.0060.00914.63
7.3.60.0000.01814.83
7.3.50.0030.00614.60
7.3.40.0080.00314.82
7.3.30.0030.01014.80
7.3.20.0070.00716.71
7.3.10.0030.01416.67
7.3.00.0140.00016.69
7.2.330.0100.00716.75
7.2.320.0000.01716.70
7.2.310.0090.00616.41
7.2.300.0130.00316.59
7.2.290.0220.02516.51
7.2.260.0030.01614.77
7.2.250.0100.00715.10
7.2.240.0110.00314.84
7.2.230.0110.00315.05
7.2.220.0070.01015.04
7.2.210.0030.01014.77
7.2.200.0130.00315.15
7.2.190.0090.00015.00
7.2.180.0080.00614.96
7.2.170.0030.01015.08
7.2.160.0030.01415.07
7.2.150.0000.00916.92
7.2.140.0000.01417.04
7.2.130.0100.00317.00
7.2.120.0100.00717.18
7.2.110.0030.01017.02
7.2.100.0140.00016.96
7.2.90.0070.00716.75
7.2.80.0110.00417.09
7.2.70.0070.00417.00
7.2.60.0040.00716.98
7.2.50.0000.01316.88
7.2.40.0030.01216.51
7.2.30.0040.01116.93
7.2.20.0070.01016.96
7.2.10.0000.00916.80
7.2.00.0020.01418.17
7.1.330.0070.00715.80
7.1.320.0070.00715.68
7.1.310.0060.00615.83
7.1.300.0030.01015.81
7.1.290.0030.00615.89
7.1.280.0040.00815.76
7.1.270.0070.00415.82
7.1.260.0030.00715.89
7.1.250.0040.01515.85
7.1.240.0070.00416.02
7.1.230.0080.00815.77
7.1.220.0080.00415.82
7.1.210.0070.01015.56
7.1.200.0080.00715.72
7.1.190.0030.00915.74
7.1.180.0030.01015.78
7.1.170.0030.01315.70
7.1.160.0040.01115.82
7.1.150.0030.01315.64
7.1.140.0050.00315.73
7.1.130.0030.00515.42
7.1.120.0070.00715.89
7.1.110.0090.00615.82
7.1.100.0070.00517.06
7.1.90.0070.00715.57
7.1.80.0070.00415.61
7.1.70.0040.00716.44
7.1.60.0050.01517.72
7.1.50.0100.00616.34
7.1.40.0070.00715.55
7.1.30.0030.00715.61
7.1.20.0070.00415.76
7.1.10.0040.01115.87
7.1.00.0000.04519.12
7.0.330.0030.01315.49
7.0.320.0060.00615.33
7.0.310.0100.00615.37
7.0.300.0030.01115.52
7.0.290.0050.01015.30
7.0.280.0040.01215.61
7.0.270.0060.00615.46
7.0.260.0100.00315.55
7.0.250.0070.00315.46
7.0.240.0040.00815.15
7.0.230.0120.00015.52
7.0.220.0000.00915.50
7.0.210.0000.01215.45
7.0.200.0090.00616.02
7.0.190.0000.00915.29
7.0.180.0070.00715.58
7.0.170.0050.00515.19
7.0.160.0000.01015.18
7.0.150.0070.00715.30
7.0.140.0070.03318.72
7.0.130.0080.00815.56
7.0.120.0030.00715.17
7.0.110.0060.00615.57
7.0.100.0110.00315.46
7.0.90.0070.01015.16
7.0.80.0060.01015.25
7.0.70.0060.00315.51
7.0.60.0060.02317.67
7.0.50.0050.04716.48
7.0.40.0090.04316.78
7.0.30.0250.04016.86
7.0.20.0110.02516.86
7.0.10.0070.02216.84
7.0.00.0070.04516.89
5.6.400.0060.00314.50
5.6.390.0060.00914.56
5.6.380.0000.01314.18
5.6.370.0060.00614.18
5.6.360.0070.01014.36
5.6.350.0100.00714.38
5.6.340.0090.00914.42
5.6.330.0030.00614.30
5.6.320.0060.00314.38
5.6.310.0030.01314.44
5.6.300.0060.00814.41
5.6.290.0030.01014.11
5.6.280.0050.04017.82
5.6.270.0100.00414.38
5.6.260.0030.01014.27
5.6.250.0050.00514.61
5.6.240.0070.00314.14
5.6.230.0070.00714.60
5.6.220.0070.00414.03
5.6.210.0050.04517.27
5.6.200.0070.04616.18
5.6.190.0040.03017.31
5.6.180.1940.02317.39
5.6.170.0190.03717.43
5.6.160.0040.02817.36
5.6.150.0090.02916.18
5.6.140.0050.04416.21
5.6.130.0070.04216.31
5.6.120.0070.04117.60
5.6.110.0060.02217.79
5.6.100.0080.04317.59
5.6.90.0050.04717.73
5.6.80.0100.02017.31
5.6.70.2150.02617.35
5.6.60.0030.01014.11
5.6.50.0030.00914.28
5.6.40.0000.00914.26
5.6.30.0130.00314.41
5.6.20.0040.00814.29
5.6.10.0120.00314.13
5.6.00.0030.01014.26
5.5.380.0080.00014.29
5.5.370.0000.01414.17
5.5.360.0030.01314.34
5.5.350.0090.04017.18
5.5.340.0030.03715.91
5.5.330.0090.02617.29
5.5.320.0180.02217.20
5.5.310.0200.04117.32
5.5.300.0030.04816.08
5.5.290.0070.04016.05
5.5.280.0110.03517.42
5.5.270.0060.04717.74
5.5.260.0100.03717.47
5.5.250.0070.04017.42
5.5.240.0160.02317.01
5.5.230.0030.00913.76
5.5.220.0080.00613.93
5.5.210.0030.01313.99
5.5.200.0030.00613.60
5.5.190.0000.01214.13
5.5.180.0040.01514.07
5.5.170.0070.01013.97
5.5.160.0070.00314.02
5.5.150.0030.01313.97
5.5.140.0070.00413.98
5.5.130.0000.01814.01
5.5.120.0060.01014.24
5.5.110.0000.01714.21
5.5.100.0060.00614.02
5.5.90.0030.01014.13
5.5.80.0060.00914.34
5.5.70.0070.00714.10
5.5.60.0060.01214.25
5.5.50.0140.00014.18
5.5.40.0120.00314.36
5.5.30.0000.00914.09
5.5.20.0030.00913.95
5.5.10.0130.00014.34
5.5.00.0090.00014.31
5.4.450.0270.02527.49
5.4.440.0160.02827.39
5.4.430.0150.02727.29
5.4.420.0130.02527.35
5.4.410.0180.02227.45
5.4.400.0220.02027.28
5.4.390.0170.02727.34
5.4.380.0080.03314.67
5.4.370.0500.02714.80
5.4.360.0120.02614.72
5.4.350.0130.02514.66
5.4.340.0070.03014.56
5.4.330.0030.00710.85
5.4.320.0050.02211.69
5.4.310.0070.02111.66
5.4.300.0060.02311.66
5.4.290.0080.01911.60
5.4.280.0020.02511.56
5.4.270.0070.02111.63
5.4.260.0060.02311.61
5.4.250.0040.02211.54
5.4.240.0040.01911.65
5.4.230.0060.02411.55
5.4.220.0070.02111.64
5.4.210.0040.02611.57
5.4.200.0030.02411.66
5.4.190.0070.01811.65
5.4.180.0060.02511.57
5.4.170.0070.02311.42
5.4.160.0060.02311.46
5.4.150.0050.02611.48
5.4.140.0080.02011.57
5.4.130.0080.02511.38
5.4.120.0040.02511.47
5.4.110.0080.02011.39
5.4.100.0030.02611.46
5.4.90.0060.02111.45
5.4.80.0020.02211.32
5.4.70.0070.02011.36
5.4.60.0030.02611.35
5.4.50.0050.02311.39
5.4.40.0090.01811.45
5.4.30.0050.02311.46
5.4.20.0050.02311.34
5.4.10.0070.02011.39
5.4.00.0060.02011.15
5.3.290.0030.02411.71
5.3.280.0030.02411.57
5.3.270.0070.02211.59
5.3.260.0040.02311.59
5.3.250.0050.02111.58
5.3.240.0080.02311.58
5.3.230.0090.02211.59
5.3.220.0090.02011.55
5.3.210.0020.02511.56
5.3.200.0040.02211.56
5.3.190.0040.02611.59
5.3.180.0050.02311.60
5.3.170.0040.02411.61
5.3.160.0050.02411.67
5.3.150.0070.02211.61
5.3.140.0060.02111.54
5.3.130.0040.02211.54
5.3.120.0070.02011.54
5.3.110.0020.02611.63
5.3.100.0080.01611.34
5.3.90.0040.02411.37
5.3.80.0050.02111.25
5.3.70.0050.02211.25
5.3.60.0050.02211.25
5.3.50.0040.02011.22
5.3.40.0040.02311.22
5.3.30.0040.02111.19
5.3.20.0030.02611.08
5.3.10.0070.02311.06
5.3.00.0040.02311.06
5.2.170.0030.0329.18
5.2.160.0050.0339.18
5.2.150.0060.0329.18
5.2.140.0060.0309.18
5.2.130.0050.0299.14
5.2.120.0070.0269.14
5.2.110.0080.0319.15
5.2.100.0100.0249.14
5.2.90.0050.0289.14
5.2.80.0040.0319.14
5.2.70.0080.0359.13
5.2.60.0080.0299.09
5.2.50.0070.0359.05
5.2.40.0070.0299.03
5.2.30.0040.0309.01
5.2.20.0040.0299.00
5.2.10.0070.0308.92
5.2.00.0040.0348.78
5.1.60.0060.0238.06
5.1.50.0090.0268.05
5.1.40.0050.0258.04
5.1.30.0030.0278.39
5.1.20.0080.0298.41
5.1.10.0040.0268.13
5.1.00.0070.0288.14
5.0.50.0060.0206.61
5.0.40.0030.0236.47
5.0.30.0000.0406.29
5.0.20.0020.0226.26
5.0.10.0040.0256.23
5.0.00.0050.0326.23
4.4.90.0020.0234.78
4.4.80.0030.0154.76
4.4.70.0010.0184.76
4.4.60.0030.0164.75
4.4.50.0030.0174.77
4.4.40.0030.0254.71
4.4.30.0040.0164.76
4.4.20.0020.0174.84
4.4.10.0020.0164.85
4.4.00.0030.0254.76
4.3.110.0020.0174.67
4.3.100.0040.0154.66
4.3.90.0040.0154.63
4.3.80.0030.0244.58
4.3.70.0040.0134.63
4.3.60.0030.0144.63
4.3.50.0020.0164.63
4.3.40.0030.0244.53
4.3.30.0030.0153.28
4.3.20.0010.0203.26
4.3.10.0040.0143.22
4.3.00.0000.02714.47

preferences:
56.59 ms | 401 KiB | 5 Q