3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { function __construct() { $this->a = "hello"; $this->b = "hi"; $this->val = "howdy"; $val = "a"; echo $this->{$val}; // outputs "hello" echo "\n"; $val = "b"; echo $$b; // outputs "hi" echo "\n"; echo $$val; //outputs "howdy" echo "\n"; echo $$val; } } $foo = new foo();

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)
8.3.40.0090.00618.92
8.3.30.0030.01019.04
8.3.20.0040.00420.35
8.3.10.0000.00721.77
8.3.00.0060.00319.38
8.2.170.0070.00722.96
8.2.160.0100.00720.35
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0000.00826.16
8.2.120.0040.00422.23
8.2.110.0030.00619.27
8.2.100.0090.00317.63
8.2.90.0000.00719.17
8.2.80.0040.00417.97
8.2.70.0030.00617.75
8.2.60.0120.00018.03
8.2.50.0030.00618.07
8.2.40.0000.00819.84
8.2.30.0000.00718.07
8.2.20.0040.00417.62
8.2.10.0050.00218.15
8.2.00.0050.00317.72
8.1.270.0090.00022.05
8.1.260.0000.00726.35
8.1.250.0000.00828.09
8.1.240.0030.00623.83
8.1.230.0080.00417.77
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0000.00917.25
8.1.190.0050.00317.36
8.1.180.0050.00318.10
8.1.170.0000.00818.43
8.1.160.0040.00421.89
8.1.150.0070.00018.88
8.1.140.0000.00717.45
8.1.130.0030.00317.70
8.1.120.0000.00717.36
8.1.110.0040.00417.43
8.1.100.0070.00017.41
8.1.90.0040.00417.52
8.1.80.0070.00017.30
8.1.70.0000.00717.43
8.1.60.0000.00717.60
8.1.50.0040.00417.43
8.1.40.0040.00417.50
8.1.30.0050.00517.58
8.1.20.0020.00517.65
8.1.10.0040.00417.50
8.1.00.0000.00717.52
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0050.00218.41
8.0.270.0000.00717.20
8.0.260.0030.00317.30
8.0.250.0000.00716.92
8.0.240.0070.00017.04
8.0.230.0040.00416.98
8.0.220.0030.00716.87
8.0.210.0000.00716.96
8.0.200.0030.00316.92
8.0.190.0070.00416.90
8.0.180.0030.00316.96
8.0.170.0000.00816.96
8.0.160.0040.00416.91
8.0.150.0050.00316.81
8.0.140.0070.00016.81
8.0.130.0000.00513.38
8.0.120.0040.00416.82
8.0.110.0040.00416.93
8.0.100.0040.00416.77
8.0.90.0060.00316.91
8.0.80.0070.01416.97
8.0.70.0070.00016.78
8.0.60.0060.00316.91
8.0.50.0040.00416.94
8.0.30.0130.00717.12
8.0.20.0090.00817.40
8.0.10.0050.00316.95
8.0.00.0090.00916.74
7.4.330.0000.00615.00
7.4.320.0030.00316.61
7.4.300.0000.00616.50
7.4.290.0050.00216.43
7.4.280.0000.00816.61
7.4.270.0070.00016.62
7.4.260.0000.00816.57
7.4.250.0000.00716.46
7.4.240.0060.00216.54
7.4.230.0000.00716.63
7.4.220.0110.00616.61
7.4.210.0130.00816.46
7.4.200.0040.00416.51
7.4.160.0100.00716.64
7.4.150.0090.01217.40
7.4.140.0070.01517.86
7.4.130.0150.00516.68
7.4.120.0100.00916.56
7.4.110.0060.01016.43
7.4.100.0100.00716.44
7.4.90.0070.01016.37
7.4.80.0130.00619.39
7.4.70.0130.00316.56
7.4.60.0090.00616.36
7.4.50.0050.00016.53
7.4.40.0100.00616.31
7.4.30.0120.00916.48
7.4.10.0070.01015.13
7.4.00.0050.01115.04
7.3.330.0020.00213.21
7.3.320.0000.00613.27
7.3.310.0000.00716.25
7.3.300.0000.00716.30
7.3.290.0100.01016.46
7.3.280.0090.00916.41
7.3.270.0110.00517.40
7.3.260.0130.00316.39
7.3.250.0090.00716.51
7.3.240.0070.01116.61
7.3.230.0060.01716.64
7.3.210.0030.01516.38
7.3.200.0070.01119.39
7.3.190.0030.01316.34
7.3.180.0080.00816.48
7.3.170.0070.01016.42
7.3.160.0030.01416.49
7.3.130.0140.00014.72
7.3.120.0080.00814.90
7.3.110.0050.01015.00
7.3.100.0020.01114.91
7.3.90.0100.00114.78
7.3.80.0050.00614.82
7.3.70.0070.00714.84
7.3.60.0030.00814.83
7.3.50.0100.00514.89
7.3.40.0120.00114.75
7.3.30.0040.00814.79
7.3.20.0040.01116.77
7.3.10.0130.00216.74
7.3.00.0080.00516.74
7.2.330.0030.01316.63
7.2.320.0110.00616.83
7.2.310.0050.01116.74
7.2.300.0130.00316.76
7.2.290.0120.00616.32
7.2.260.0090.00915.24
7.2.250.0040.01315.17
7.2.240.0110.00715.02
7.2.230.0080.00714.88
7.2.220.0070.00615.24
7.2.210.0040.00714.79
7.2.200.0040.01215.07
7.2.190.0050.00615.13
7.2.180.0030.01315.10
7.2.170.0050.01015.09
7.2.160.0040.00414.78
7.2.150.0080.00417.06
7.2.140.0070.00316.89
7.2.130.0060.00617.02
7.2.120.0060.01216.74
7.2.110.0070.01017.05
7.2.100.0040.00816.69
7.2.90.0090.00617.20
7.2.80.0000.01116.64
7.2.70.0060.00316.93
7.2.60.0070.01116.72
7.2.50.0030.01316.81
7.2.40.0030.00616.84
7.2.30.0030.01016.89
7.2.20.0030.01016.74
7.2.10.0060.00316.89
7.2.00.0030.01016.90
7.1.330.0070.00715.77
7.1.320.0100.00115.73
7.1.310.0030.01115.61
7.1.300.0040.01115.76
7.1.290.0050.01015.66
7.1.280.0090.00415.57
7.1.270.0040.00615.73
7.1.260.0060.00815.63
7.1.250.0030.00915.33
7.1.240.0100.00715.59
7.1.230.0040.00415.79
7.1.220.0070.00315.74
7.1.210.0110.00015.82
7.1.200.0080.00815.74
7.1.190.0030.01015.84
7.1.180.0070.01015.41
7.1.170.0000.01115.74
7.1.160.0030.00615.63
7.1.150.0110.00415.88
7.1.140.0030.01015.65
7.1.130.0000.01315.84
7.1.120.0030.01015.62
7.1.110.0000.01115.73
7.1.100.0040.00716.94
7.1.90.0040.00715.72
7.1.80.0030.01015.79
7.1.70.0050.00516.16
7.1.60.0130.00817.46
7.1.50.0030.01316.39
7.1.40.0080.00615.48
7.1.30.0110.00415.88
7.1.20.0070.00715.71
7.1.10.0000.00915.74
7.1.00.0060.04119.10
7.0.330.0060.01015.33
7.0.320.0040.00815.45
7.0.310.0030.01015.39
7.0.300.0070.00715.21
7.0.290.0030.00715.34
7.0.280.0060.00615.42
7.0.270.0070.00715.20
7.0.260.0040.01115.18
7.0.250.0000.01015.30
7.0.240.0040.00415.27
7.0.230.0040.01415.43
7.0.220.0060.01115.25
7.0.210.0110.00715.34
7.0.200.0030.00815.95
7.0.190.0000.01315.14
7.0.180.0070.00715.57
7.0.170.0030.00915.50
7.0.160.0040.00415.43
7.0.150.0060.00615.29
7.0.140.0050.03718.84
7.0.130.0070.00715.49
7.0.120.0000.00915.43
7.0.110.0040.00715.54
7.0.100.0070.00715.58
7.0.90.0040.00415.36
7.0.80.0080.00415.22
7.0.70.0070.00415.32
7.0.60.0050.03017.58
7.0.50.0070.04616.70
7.0.40.0120.04316.97
7.0.30.0100.02216.83
7.0.20.0170.04516.83
7.0.10.0190.03516.82
7.0.00.0070.04716.75
5.6.400.0070.01014.38
5.6.390.0090.00614.66
5.6.380.0070.00714.32
5.6.370.0060.00614.22
5.6.360.0040.01213.96
5.6.350.0040.00814.62
5.6.340.0050.00314.37
5.6.330.0030.00614.38
5.6.320.0030.01014.54
5.6.310.0060.01214.58
5.6.300.0070.01014.36
5.6.290.0090.00614.47
5.6.280.0100.03517.60
5.6.270.0000.00914.39
5.6.260.0030.00614.45
5.6.250.0090.00614.29
5.6.240.0120.00414.47
5.6.230.0090.00314.38
5.6.220.0070.00714.32
5.6.210.0050.04317.45
5.6.200.0080.04516.15
5.6.190.0060.04417.39
5.6.180.0160.02017.45
5.6.170.0130.03217.48
5.6.160.0050.02317.19
5.6.150.0060.04516.19
5.6.140.0050.04516.33
5.6.130.0070.02716.25
5.6.120.0050.02617.82
5.6.110.0120.02517.71
5.6.100.0030.05017.65
5.6.90.0000.03217.69
5.6.80.0100.03617.19
5.6.70.1980.02417.39
5.6.60.0040.01114.54
5.6.50.0040.00714.35
5.6.40.0070.00714.29
5.6.30.0090.00314.44
5.6.20.0060.00614.48
5.6.10.0040.00414.56
5.6.00.0090.00314.30
5.5.380.0040.00714.52
5.5.370.0030.01214.11
5.5.360.0060.00914.72
5.5.350.0100.04417.34
5.5.340.0080.03416.06
5.5.330.0020.03017.57
5.5.320.0240.02017.04
5.5.310.0150.04817.18
5.5.300.0140.02616.12
5.5.290.0030.04716.04
5.5.280.0050.02417.49
5.5.270.0050.03017.59
5.5.260.0070.04817.71
5.5.250.0050.02317.48
5.5.240.0100.04017.18
5.5.230.0070.01114.34
5.5.220.0030.01014.22
5.5.210.0000.01514.58
5.5.200.0030.00714.28
5.5.190.0070.00714.30
5.5.180.0060.00314.30
5.5.170.0000.00814.17
5.5.160.0040.00914.13
5.5.150.0060.00614.32
5.5.140.0080.00414.31
5.5.130.0030.01014.48
5.5.120.0070.00714.34
5.5.110.0130.00314.11
5.5.100.0030.01014.18
5.5.90.0030.01014.23
5.5.80.0050.00814.35
5.5.70.0030.01014.08
5.5.60.0070.00713.77
5.5.50.0030.01014.38
5.5.40.0060.00914.09
5.5.30.0060.00814.07
5.5.20.0070.00714.38
5.5.10.0040.00414.09
5.5.00.0000.01313.99
5.4.450.0380.03115.76
5.4.440.0500.02815.75
5.4.430.0590.02815.75
5.4.420.0330.00315.75
5.4.410.0430.00315.63
5.4.400.0380.00315.60
5.4.390.0330.00515.57
5.4.380.0450.00215.52
5.4.370.0350.00015.59
5.4.360.0380.00415.49
5.4.350.0400.00315.49
5.4.340.0020.02511.98
5.4.330.0000.00911.94
5.4.320.0070.02112.22
5.4.310.0060.02012.22
5.4.300.0050.01912.22
5.4.290.0050.02412.22
5.4.280.0040.02312.17
5.4.270.0080.02112.17
5.4.260.0060.02312.17
5.4.250.0050.02412.17
5.4.240.0110.02012.17
5.4.230.0030.02412.16
5.4.220.0070.02312.16
5.4.210.0060.02112.16
5.4.200.0020.02512.16
5.4.190.0070.02012.16
5.4.180.0020.02312.16
5.4.170.0100.01612.17
5.4.160.0050.02012.16
5.4.150.0040.02612.16
5.4.140.0050.02312.00
5.4.130.0040.01912.00
5.4.120.0060.01911.98
5.4.110.0030.02111.97
5.4.100.0070.02011.97
5.4.90.0030.02311.97
5.4.80.0040.02411.97
5.4.70.0040.02211.97
5.4.60.0070.01911.97
5.4.50.0060.02011.97
5.4.40.0040.02011.97
5.4.30.0040.02211.96
5.4.20.0040.02311.97
5.4.10.0060.02111.96
5.4.00.0040.02211.71
5.3.290.0060.03912.80
5.3.280.0080.03512.71
5.3.270.0060.03812.72
5.3.260.0060.03912.72
5.3.250.0060.03812.71
5.3.240.0060.03712.71
5.3.230.0060.04312.71
5.3.220.0070.03612.68
5.3.210.0070.03712.68
5.3.200.0070.04312.68
5.3.190.0080.03512.68
5.3.180.0050.03612.68
5.3.170.0050.03812.67
5.3.160.0060.04012.67
5.3.150.0060.04112.67
5.3.140.0100.03312.66
5.3.130.0030.04212.66
5.3.120.0080.03712.66
5.3.110.0060.03912.66
5.3.100.0080.03812.12
5.3.90.0070.03712.10
5.3.80.0070.03612.09
5.3.70.0080.03612.09
5.3.60.0060.03612.08
5.3.50.0060.03512.03
5.3.40.0100.03312.02
5.3.30.0080.03311.98
5.3.20.0060.03511.76
5.3.10.0080.03211.73
5.3.00.0070.03911.71
5.2.170.0050.0319.22
5.2.160.0050.0319.22
5.2.150.0040.0319.22
5.2.140.0050.0299.22
5.2.130.0060.0279.18
5.2.120.0050.0339.18
5.2.110.0070.0369.18
5.2.100.0060.0369.17
5.2.90.0050.0309.18
5.2.80.0050.0369.17
5.2.70.0050.0309.17
5.2.60.0040.0309.13
5.2.50.0040.0309.09
5.2.40.0050.0289.07
5.2.30.0040.0309.05
5.2.20.0060.0279.03
5.2.10.0060.0278.94
5.2.00.0000.0368.80
5.1.60.0080.0228.08
5.1.50.0050.0328.08
5.1.40.0040.0258.07
5.1.30.0020.0298.41
5.1.20.0070.0258.44
5.1.10.0060.0258.16
5.1.00.0020.0278.16
5.0.50.0020.0226.64
5.0.40.0050.0176.50
5.0.30.0040.0306.31
5.0.20.0040.0206.28
5.0.10.0010.0246.25
5.0.00.0040.0306.25
4.4.90.0010.0174.78
4.4.80.0020.0164.76
4.4.70.0000.0184.75
4.4.60.0030.0154.76
4.4.50.0030.0204.77
4.4.40.0030.0254.71
4.4.30.0020.0174.76
4.4.20.0020.0184.84
4.4.10.0040.0144.85
4.4.00.0040.0234.76
4.3.110.0030.0244.67
4.3.100.0030.0194.67
4.3.90.0010.0164.63
4.3.80.0030.0304.58
4.3.70.0050.0124.63
4.3.60.0030.0144.62
4.3.50.0060.0184.63
4.3.40.0040.0224.54
4.3.30.0000.0183.30
4.3.20.0010.0223.28
4.3.10.0020.0163.24
4.3.00.0170.0207.25

preferences:
50.73 ms | 400 KiB | 5 Q