3v4l.org

run code in 300+ PHP versions simultaneously
<?php $A = array(); $B = &$A[0]; $F = &$A[1]; $C = $A; $D = $A; $C[0] = $D[1]; debug_zval_dump($A); debug_zval_dump($C); debug_zval_dump($D); $C[0] = 10; $D[1] = 20; echo $A[0] . ' ' . $A[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)
8.3.70.0060.00916.63
8.3.60.0110.01118.56
8.3.50.0110.00722.16
8.3.40.0040.01118.75
8.3.30.0070.00719.00
8.3.20.0000.00720.04
8.3.10.0000.00723.64
8.3.00.0090.00920.93
8.2.180.0070.01416.38
8.2.170.0040.01122.96
8.2.160.0030.01020.52
8.2.150.0060.00324.18
8.2.140.0000.00824.66
8.2.130.0000.00726.16
8.2.120.0080.00020.72
8.2.110.0040.00422.29
8.2.100.0090.00319.64
8.2.90.0040.00419.40
8.2.80.0040.00417.97
8.2.70.0060.00317.49
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0000.00820.01
8.2.30.0080.00018.18
8.2.20.0040.00417.86
8.2.10.0000.00818.05
8.2.00.0050.00317.59
8.1.280.0120.00625.92
8.1.270.0080.00023.79
8.1.260.0040.00426.35
8.1.250.0110.00428.09
8.1.240.0030.00623.60
8.1.230.0070.00419.16
8.1.220.0050.00317.74
8.1.210.0000.00818.77
8.1.200.0080.00417.34
8.1.190.0000.00817.13
8.1.180.0000.00818.10
8.1.170.0040.00418.59
8.1.160.0050.00222.00
8.1.150.0050.00218.62
8.1.140.0030.00517.44
8.1.130.0030.00317.72
8.1.120.0050.00317.46
8.1.110.0040.00417.30
8.1.100.0060.00617.37
8.1.90.0040.00417.45
8.1.80.0000.00817.43
8.1.70.0030.00317.38
8.1.60.0000.00817.60
8.1.50.0050.00317.43
8.1.40.0050.00317.37
8.1.30.0060.00317.52
8.1.20.0040.00417.57
8.1.10.0040.00417.55
8.1.00.0040.00417.51
8.0.300.0080.00018.77
8.0.290.0050.00516.79
8.0.280.0040.00418.37
8.0.270.0000.00717.12
8.0.260.0000.00617.25
8.0.250.0050.00216.97
8.0.240.0000.00816.94
8.0.230.0030.00316.84
8.0.220.0030.00316.85
8.0.210.0030.00316.78
8.0.200.0060.00316.95
8.0.190.0040.00416.94
8.0.180.0050.00216.92
8.0.170.0040.00416.93
8.0.160.0000.00717.01
8.0.150.0000.00716.84
8.0.140.0000.00716.80
8.0.130.0030.00313.34
8.0.120.0000.00716.89
8.0.110.0000.00716.84
8.0.100.0070.00016.94
8.0.90.0040.00416.77
8.0.80.0140.00616.91
8.0.70.0040.00416.94
8.0.60.0000.00716.86
8.0.50.0050.00216.99
8.0.30.0130.00716.95
8.0.20.0130.01017.40
8.0.10.0000.00717.05
8.0.00.0130.00716.78
7.4.330.0020.00215.00
7.4.320.0000.00616.39
7.4.300.0000.00916.52
7.4.290.0030.00716.40
7.4.280.0000.00716.48
7.4.270.0000.00716.61
7.4.260.0000.00716.54
7.4.250.0040.00416.47
7.4.240.0030.00416.48
7.4.230.0060.00316.36
7.4.220.0110.00716.60
7.4.210.0000.01416.50
7.4.200.0050.00216.43
7.4.160.0090.00916.44
7.4.150.0190.00617.40
7.4.140.0070.01117.86
7.4.130.0130.00516.53
7.4.120.0140.00616.58
7.4.110.0130.00516.54
7.4.100.0070.01416.43
7.4.90.0090.00816.38
7.4.80.0080.00819.39
7.4.70.0140.00316.31
7.4.60.0100.00716.30
7.4.50.0060.00316.55
7.4.40.0060.01516.24
7.4.30.0030.01916.22
7.4.00.0030.00914.73
7.3.330.0000.00612.99
7.3.320.0000.00613.10
7.3.310.0000.00716.22
7.3.300.0070.00016.12
7.3.290.0100.01016.25
7.3.280.0100.00816.27
7.3.270.0140.01017.40
7.3.260.0080.00816.52
7.3.250.0080.01016.43
7.3.240.0120.00916.61
7.3.230.0130.00316.45
7.3.210.0030.01516.29
7.3.200.0100.00519.39
7.3.190.0030.01316.63
7.3.180.0040.01616.31
7.3.170.0180.00416.65
7.3.160.0030.01316.29
7.3.120.0060.01014.81
7.3.110.0030.01114.91
7.3.100.0030.01014.56
7.3.90.0030.01014.64
7.3.80.0030.00814.80
7.3.70.0060.00614.84
7.3.60.0030.01114.85
7.3.50.0100.00514.85
7.3.40.0060.00614.79
7.3.30.0050.00914.79
7.3.20.0030.01216.53
7.3.10.0090.00516.76
7.3.00.0140.00216.62
7.2.330.0030.01516.44
7.2.320.0110.01116.80
7.2.310.0080.01116.38
7.2.300.0120.00916.71
7.2.290.0000.01816.51
7.2.250.0130.00615.23
7.2.240.0080.01015.05
7.2.230.0040.01215.16
7.2.220.0030.01114.89
7.2.210.0070.00515.10
7.2.200.0070.00615.08
7.2.190.0040.01215.02
7.2.180.0020.01115.13
7.2.170.0050.00914.92
7.2.160.0000.01114.94
7.2.150.0030.01316.96
7.2.140.0070.00716.82
7.2.130.0090.00316.98
7.2.120.0060.00916.97
7.2.110.0130.00316.62
7.2.100.0000.00916.70
7.2.90.0000.01716.73
7.2.80.0030.00917.02
7.2.70.0090.00316.78
7.2.60.0030.00916.70
7.2.50.0070.01117.01
7.2.40.0040.01117.03
7.2.30.0030.00617.11
7.2.20.0060.00916.95
7.2.10.0120.00316.67
7.2.00.0040.00618.02
7.1.330.0070.00415.90
7.1.320.0080.00615.89
7.1.310.0030.00815.90
7.1.300.0060.00615.86
7.1.290.0030.01215.69
7.1.280.0070.00715.92
7.1.270.0050.00715.80
7.1.260.0040.00815.76
7.1.250.0000.01015.39
7.1.200.0060.00315.84
7.1.70.0030.00517.28
7.1.60.0030.01017.25
7.1.50.0130.01016.60
7.1.00.0070.07022.37
7.0.200.0070.01016.83
7.0.140.0030.07321.92
7.0.60.0100.07019.95
7.0.50.0070.06717.86
7.0.40.0000.08720.04
7.0.30.0670.06720.09
7.0.20.0330.08320.20
7.0.10.0030.08020.30
7.0.00.0030.08720.09
5.6.280.0030.07021.12
5.6.210.0130.05720.52
5.6.200.0100.07718.16
5.6.190.0200.07320.45
5.6.180.0230.04020.64
5.6.170.0170.08020.46
5.6.160.0170.05020.38
5.6.150.0070.04018.17
5.6.140.0100.04718.13
5.6.130.0130.08018.17
5.6.120.0170.07720.98
5.6.110.0100.07021.04
5.6.100.0170.07320.92
5.6.90.0100.03720.98
5.6.80.0100.06720.50
5.6.70.2400.03720.42
5.5.350.0200.07020.38
5.5.340.0030.06018.02
5.5.330.0030.08720.21
5.5.320.0330.07020.21
5.5.310.0230.06720.51
5.5.300.0100.08017.95
5.5.290.0030.04017.98
5.5.280.0030.05720.95
5.5.270.0130.07720.79
5.5.260.0130.06720.73
5.5.250.0000.04320.76
5.5.240.0130.08720.25
5.4.450.0670.04027.56
5.4.440.0500.04026.20
5.4.430.0530.05026.13
5.4.420.0070.04726.13
5.4.410.0370.04326.13
5.4.400.0130.04726.12
5.4.390.0270.04026.12
5.4.380.0100.05718.59
5.4.370.0070.05718.59
5.4.360.0100.05718.77
5.4.350.0130.05718.62
5.4.340.0100.05318.48
5.4.320.0080.03512.45
5.4.310.0070.03712.45
5.4.300.0090.06212.45
5.4.290.0110.07212.45
5.4.280.0130.04512.35
5.4.270.0080.04512.35
5.4.260.0050.05212.34
5.4.250.0070.04212.35
5.4.240.0080.04512.34
5.4.230.0100.04812.34
5.4.220.0090.04812.34
5.4.210.0070.05112.34
5.4.200.0100.05212.34
5.4.190.0090.04912.34
5.4.180.0090.05512.33
5.4.170.0140.05212.35
5.4.160.0070.04712.34
5.4.150.0100.04012.34
5.4.140.0070.04212.02
5.4.130.0070.04012.01
5.4.120.0040.04911.96
5.4.110.0140.04411.96
5.4.100.0080.04911.96
5.4.90.0060.05411.96
5.4.80.0100.05011.96
5.4.70.0110.04711.96
5.4.60.0070.05011.96
5.4.50.0090.05011.96
5.4.40.0110.05411.95
5.4.30.0080.05111.95
5.4.20.0070.05211.95
5.4.10.0090.04911.95
5.4.00.0110.04911.43
5.3.290.0080.03812.80
5.3.280.0080.05212.71
5.3.270.0110.05012.72
5.3.260.0130.04912.72
5.3.250.0090.05312.72
5.3.240.0100.05212.72
5.3.230.0050.05512.71
5.3.220.0230.04412.68
5.3.210.0120.06312.68
5.3.200.0120.04912.68
5.3.190.0110.05612.68
5.3.180.0160.05412.67
5.3.170.0200.05012.67
5.3.160.0070.06012.68
5.3.150.0190.05112.68
5.3.140.0200.04412.66
5.3.130.0180.04712.66
5.3.120.0110.06312.66
5.3.110.0180.05312.66
5.3.100.0120.05312.12
5.3.90.0130.05212.08
5.3.80.0150.05212.08
5.3.70.0140.04812.07
5.3.60.0120.06212.07
5.3.50.0080.05812.00
5.3.40.0060.05312.00
5.3.30.0110.04911.94
5.3.20.0080.05011.72
5.3.10.0090.04211.69
5.3.00.0080.04311.68
5.2.170.0090.0389.18
5.2.160.0120.0749.18
5.2.150.0100.0549.18
5.2.140.0160.0699.17
5.2.130.0130.0509.14
5.2.120.0080.0479.14
5.2.110.0050.0569.14
5.2.100.0140.0669.14
5.2.90.0100.0859.14
5.2.80.0080.0489.13
5.2.70.0120.0609.14
5.2.60.0070.0539.09
5.2.50.0080.0519.05
5.2.40.0170.0419.03
5.2.30.0100.0489.00
5.2.20.0060.0529.00
5.2.10.0120.0518.94
5.2.00.0130.0508.79
5.1.60.0040.0468.07
5.1.50.0090.0518.07
5.1.40.0090.0458.06
5.1.30.0080.0488.41
5.1.20.0060.0438.43
5.1.10.0080.0388.15
5.1.00.0060.0428.15
5.0.50.0080.0326.63
5.0.40.0050.0346.49
5.0.30.0120.0516.30
5.0.20.0070.0306.27
5.0.10.0080.0316.25
5.0.00.0100.0456.24
4.4.90.0020.0234.78
4.4.80.0070.0224.75
4.4.70.0040.0244.75
4.4.60.0050.0224.76
4.4.50.0040.0244.77
4.4.40.0080.0614.71
4.4.30.0070.0234.76
4.4.20.0020.0464.84
4.4.10.0040.0224.85
4.4.00.0120.0514.75
4.3.110.0130.0384.67
4.3.100.0120.0444.66
4.3.90.0040.0384.63
4.3.80.0020.0324.59
4.3.70.0040.0204.63
4.3.60.0050.0454.63
4.3.50.0060.0444.63
4.3.40.0120.0644.53
4.3.30.0070.0473.29
4.3.20.0090.0333.27
4.3.10.0040.0213.23
4.3.00.0070.01326.11

preferences:
50.24 ms | 401 KiB | 5 Q