3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 10; $foo = null; $ref = &$foo; do { $ref = array('foo' => 'bar'); $ref = &$ref['foo']; } while (--$x); var_dump($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)
8.3.60.0170.00318.18
8.3.50.0100.00622.00
8.3.40.0140.00018.71
8.3.30.0100.00319.09
8.3.20.0040.00420.19
8.3.10.0070.00022.14
8.3.00.0040.00422.39
8.2.180.0140.00716.63
8.2.170.0110.00722.96
8.2.160.0100.00320.98
8.2.150.0050.00324.18
8.2.140.0000.00924.66
8.2.130.0040.00426.16
8.2.120.0050.00319.38
8.2.110.0050.00522.08
8.2.100.0080.00317.84
8.2.90.0040.00419.22
8.2.80.0000.00818.04
8.2.70.0050.00317.63
8.2.60.0040.00417.92
8.2.50.0060.00318.07
8.2.40.0050.00218.16
8.2.30.0050.00318.06
8.2.20.0070.00017.51
8.2.10.0070.00017.79
8.2.00.0030.00517.67
8.1.280.0180.00325.92
8.1.270.0040.00422.19
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0090.00023.80
8.1.230.0000.01119.16
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0000.01017.35
8.1.190.0040.00417.50
8.1.180.0000.00818.64
8.1.170.0110.00018.54
8.1.160.0050.00321.91
8.1.150.0030.00618.57
8.1.140.0040.00417.39
8.1.130.0030.00317.80
8.1.120.0030.00317.29
8.1.110.0050.00317.29
8.1.100.0040.00417.23
8.1.90.0000.00717.38
8.1.80.0040.00417.38
8.1.70.0000.00717.36
8.1.60.0040.00817.54
8.1.50.0000.00717.35
8.1.40.0040.00417.31
8.1.30.0030.00517.63
8.1.20.0000.00817.69
8.1.10.0030.00617.39
8.1.00.0070.00017.29
8.0.300.0000.00818.77
8.0.290.0030.00417.04
8.0.280.0000.00718.37
8.0.270.0070.00017.23
8.0.260.0030.00316.75
8.0.250.0030.00316.90
8.0.240.0030.00516.81
8.0.230.0050.00516.79
8.0.220.0050.00316.88
8.0.210.0030.00316.70
8.0.200.0040.00416.84
8.0.190.0000.00816.89
8.0.180.0070.00316.91
8.0.170.0000.00716.80
8.0.160.0000.00716.80
8.0.150.0000.00916.82
8.0.140.0000.00716.82
8.0.130.0030.00313.29
8.0.120.0040.00416.76
8.0.110.0070.00016.66
8.0.100.0000.00816.77
8.0.90.0040.00416.69
8.0.80.0070.00716.77
8.0.70.0040.00416.72
8.0.60.0040.00416.80
8.0.50.0030.00316.64
8.0.30.0130.00716.85
8.0.20.0120.00617.40
8.0.10.0030.00616.91
8.0.00.0070.01516.65
7.4.330.0050.00015.03
7.4.320.0000.00716.35
7.4.300.0030.00316.43
7.4.290.0000.00716.50
7.4.280.0000.00716.41
7.4.270.0000.00716.33
7.4.260.0030.00316.33
7.4.250.0040.00416.41
7.4.240.0040.00416.43
7.4.230.0070.00016.37
7.4.220.0100.00716.37
7.4.210.0060.01016.46
7.4.200.0030.00316.31
7.4.190.0070.00016.40
7.4.160.0060.01616.36
7.4.150.0170.00017.40
7.4.140.0070.01417.86
7.4.130.0080.01716.49
7.4.120.0100.00716.29
7.4.110.0000.01716.46
7.4.100.0120.00616.48
7.4.90.0060.01216.38
7.4.80.0190.00319.39
7.4.70.0090.00916.26
7.4.60.0080.00816.54
7.4.50.0040.00416.41
7.4.40.0100.00522.77
7.4.30.0060.00916.46
7.4.00.0050.00914.73
7.3.330.0000.00513.01
7.3.320.0050.00012.98
7.3.310.0000.00716.13
7.3.300.0030.00316.20
7.3.290.0030.01016.21
7.3.280.0070.00916.25
7.3.270.0080.01017.40
7.3.260.0100.01316.24
7.3.250.0110.01116.29
7.3.240.0100.00716.14
7.3.230.0150.00316.42
7.3.210.0100.00716.25
7.3.200.0090.00619.39
7.3.190.0100.00716.38
7.3.180.0060.01016.55
7.3.170.0060.01116.32
7.3.160.0030.01316.51
7.3.120.0030.01214.72
7.3.110.0070.01014.93
7.3.100.0080.00414.44
7.3.90.0000.01414.68
7.3.80.0000.00914.87
7.3.70.0040.00714.84
7.3.60.0060.00814.93
7.3.50.0030.01014.79
7.3.40.0030.00914.76
7.3.30.0120.00314.93
7.3.20.0070.00416.53
7.3.10.0030.01416.63
7.3.00.0000.01216.65
7.2.330.0020.01616.20
7.2.320.0070.01816.31
7.2.310.0060.01016.55
7.2.300.0120.00616.62
7.2.290.0120.01216.57
7.2.250.0110.00714.95
7.2.240.0040.01215.24
7.2.230.0050.00514.97
7.2.220.0030.00914.85
7.2.210.0060.00914.88
7.2.200.0030.01015.04
7.2.190.0090.00614.99
7.2.180.0070.01014.96
7.2.170.0070.00715.00
7.2.60.0000.01616.85
7.2.00.0050.00819.30
7.1.330.0080.00416.05
7.1.320.0030.00615.75
7.1.310.0090.00615.66
7.1.300.0100.00315.79
7.1.290.0030.01015.59
7.1.280.0070.00715.84
7.1.270.0150.00015.77
7.1.260.0070.00315.56
7.1.200.0070.00715.55
7.1.100.0030.01118.12
7.1.70.0000.00817.15
7.1.60.0070.01819.82
7.1.50.0030.02017.05
7.1.00.0070.07022.32
7.0.200.0100.00016.87
7.0.140.0070.07021.98
7.0.60.0030.04019.83
7.0.50.0100.04017.83
7.0.40.0030.08320.24
7.0.30.0330.07320.09
7.0.20.0300.05320.10
7.0.10.0100.05720.13
7.0.00.0100.06320.13
5.6.280.0000.07320.99
5.6.210.0070.05020.60
5.6.200.0070.08018.12
5.6.190.0030.04720.61
5.6.180.3230.04720.64
5.6.170.0230.09320.48
5.6.160.0170.07320.47
5.6.150.0170.06018.07
5.6.140.0030.08718.11
5.6.130.0100.04318.18
5.6.120.0100.08021.02
5.6.110.0130.07020.99
5.6.100.0100.07021.00
5.6.90.0030.04321.12
5.6.80.0030.09020.50
5.6.70.3700.03720.25
5.5.350.0030.08020.31
5.5.340.0000.04717.98
5.5.330.0070.04020.21
5.5.320.0300.04020.32
5.5.310.0230.07720.50
5.5.300.0070.05017.97
5.5.290.0130.07017.90
5.5.280.0100.06020.73
5.5.270.0130.06720.84
5.5.260.0200.07320.95
5.5.250.0100.07720.69
5.5.240.0000.07320.26
5.4.450.0200.05319.27
5.4.440.0570.06019.49
5.4.430.0200.04319.53
5.4.420.0170.05019.63
5.4.410.0170.04719.52
5.4.400.1030.00018.83
5.4.390.0830.00018.56
5.4.380.0300.05018.50
5.4.370.0800.05018.73
5.4.360.1170.04318.53
5.4.350.1100.05318.72
5.4.340.1200.04318.50
5.4.320.0050.04712.46
5.4.310.0040.04012.45
5.4.300.0070.03612.45
5.4.290.0050.04812.45
5.4.280.0110.04512.35
5.4.270.0050.04212.35
5.4.260.0130.06719.02
5.4.250.0030.06018.97
5.4.240.0170.07019.01
5.4.230.0100.05018.74
5.4.220.0130.07018.74
5.4.210.0070.05718.74
5.4.200.0100.07318.75
5.4.190.0100.07018.85
5.4.180.0200.04718.85
5.4.170.0070.05718.70
5.4.160.0030.06318.80
5.4.150.0130.07318.84
5.4.140.0100.05316.39
5.4.130.0100.04716.49
5.4.120.0170.05716.48
5.4.110.0070.07716.27
5.4.100.0200.05316.34
5.4.90.0200.05716.32
5.4.80.0200.05716.31
5.4.70.0030.06016.49
5.4.60.0030.05716.21
5.4.50.0070.06016.45
5.4.40.0100.04716.53
5.4.30.0100.04716.23
5.4.20.0130.06716.44
5.4.10.0070.06016.39
5.4.00.0100.04715.91
5.3.290.0080.05212.80
5.3.280.0100.07314.29
5.3.270.0100.05314.51
5.3.260.0200.04314.47
5.3.250.0230.04314.61
5.3.240.0100.06714.75
5.3.230.0070.05314.37
5.3.220.0100.07314.66
5.3.210.0100.06014.66
5.3.200.0170.04314.48
5.3.190.0200.05014.46
5.3.180.0130.04314.58
5.3.170.0230.03714.42
5.3.160.0070.05314.26
5.3.150.0030.05314.65
5.3.140.0170.06014.39
5.3.130.0100.04714.55
5.3.120.0070.05314.64
5.3.110.0070.05014.39
5.3.100.0170.07313.90
5.3.90.0000.05313.88
5.3.80.0130.04313.90
5.3.70.0100.05314.11
5.3.60.0100.05713.87
5.3.50.0030.05713.95
5.3.40.0130.06713.96
5.3.30.0000.05313.84
5.3.20.0030.05313.85
5.3.10.0170.04713.59
5.3.00.0070.07013.33
5.2.170.0000.04711.08
5.2.160.0130.03010.97
5.2.150.0000.04710.97
5.2.140.0100.03710.97
5.2.130.0000.04311.21
5.2.120.0030.06011.03
5.2.110.0100.03711.01
5.2.100.0100.04311.01
5.2.90.0170.03011.10
5.2.80.0000.06710.97
5.2.70.0030.05311.20
5.2.60.0100.05311.05
5.2.50.0100.05311.11
5.2.40.0130.04011.01
5.2.30.0030.06010.98
5.2.20.0100.04010.79
5.2.10.0070.04010.78
5.2.00.0100.03710.62
5.1.60.0030.0439.94
5.1.50.0030.0479.88
5.1.40.0030.0539.91
5.1.30.0170.04310.54
5.1.20.0070.05310.11
5.1.10.0070.04310.21
5.1.00.0070.04010.30
5.0.50.0000.0408.46
5.0.40.0070.0278.64
5.0.30.0100.0377.99
5.0.20.0030.0278.24
5.0.10.0030.0278.20
5.0.00.0000.0438.13
4.4.90.0030.0307.32
4.4.80.0070.0207.32
4.4.70.0070.0277.32
4.4.60.0000.0237.32
4.4.50.0000.0337.32
4.4.40.0070.0307.32
4.4.30.0000.0307.32
4.4.20.0000.0237.32
4.4.10.0030.0237.32
4.4.00.0030.0337.32
4.3.110.0000.0237.32
4.3.100.0030.0207.32
4.3.90.0000.0237.32
4.3.80.0030.0307.32
4.3.70.0000.0237.32
4.3.60.0100.0107.44
4.3.50.0000.0337.44
4.3.40.0030.0307.44
4.3.30.0100.0177.44
4.3.20.0030.0237.44
4.3.10.0030.0207.44
4.3.00.0030.0208.20

preferences:
35.11 ms | 401 KiB | 5 Q