3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'tst'; $b = array ( $a => &$a ); $a = 'bnb'; echo $b['tst']; ?>

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)
8.3.60.0070.01418.30
8.3.50.0080.00722.85
8.3.40.0110.00318.83
8.3.30.0100.00319.00
8.3.20.0040.00420.16
8.3.10.0080.00023.48
8.3.00.0000.00819.25
8.2.180.0130.00316.63
8.2.170.0070.01422.96
8.2.160.0070.00720.31
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0000.00820.97
8.2.110.0060.00320.58
8.2.100.0040.00818.22
8.2.90.0040.00419.17
8.2.80.0030.00617.97
8.2.70.0080.00317.25
8.2.60.0040.00417.93
8.2.50.0030.00518.07
8.2.40.0040.00418.16
8.2.30.0040.00418.09
8.2.20.0040.00417.64
8.2.10.0050.00217.92
8.2.00.0080.00017.55
8.1.280.0120.00925.92
8.1.270.0040.00423.87
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0040.00423.89
8.1.230.0110.00018.86
8.1.220.0000.00717.79
8.1.210.0050.00318.77
8.1.200.0030.00617.23
8.1.190.0060.00317.22
8.1.180.0050.00318.10
8.1.170.0040.00418.37
8.1.160.0040.00421.86
8.1.150.0000.00818.81
8.1.140.0030.00617.42
8.1.130.0030.00517.68
8.1.120.0050.00217.37
8.1.110.0040.00417.39
8.1.100.0050.00317.23
8.1.90.0000.00717.44
8.1.80.0000.00717.42
8.1.70.0000.00717.26
8.1.60.0000.01017.46
8.1.50.0040.00417.28
8.1.40.0020.00517.43
8.1.30.0030.00517.56
8.1.20.0040.00417.59
8.1.10.0070.00017.55
8.1.00.0000.00817.46
8.0.300.0000.00718.77
8.0.290.0000.00716.75
8.0.280.0070.00018.42
8.0.270.0030.00516.85
8.0.260.0030.00317.21
8.0.250.0000.00716.90
8.0.240.0060.00316.92
8.0.230.0060.00316.72
8.0.220.0000.00716.82
8.0.210.0000.00716.80
8.0.200.0030.00316.93
8.0.190.0000.00716.82
8.0.180.0040.00416.73
8.0.170.0040.00416.82
8.0.160.0000.00716.80
8.0.150.0040.00416.82
8.0.140.0030.00316.73
8.0.130.0030.00313.23
8.0.120.0050.00316.74
8.0.110.0040.00416.75
8.0.100.0050.00316.62
8.0.90.0040.00416.76
8.0.80.0110.00516.79
8.0.70.0000.00716.81
8.0.60.0040.00416.60
8.0.50.0040.00316.70
8.0.30.0090.00916.93
8.0.20.0160.00617.40
8.0.10.0070.00017.04
8.0.00.0060.01116.53
7.4.330.0060.00015.00
7.4.320.0060.00016.57
7.4.300.0000.00616.32
7.4.290.0030.00416.50
7.4.280.0050.00316.49
7.4.270.0110.00016.43
7.4.260.0030.00316.55
7.4.250.0000.00816.50
7.4.240.0030.00416.47
7.4.230.0030.00316.61
7.4.220.0100.00716.42
7.4.210.0030.01716.46
7.4.200.0000.00716.35
7.4.160.0130.01016.43
7.4.150.0070.01017.40
7.4.140.0130.00717.86
7.4.130.0110.00816.52
7.4.120.0130.00716.40
7.4.110.0250.03716.31
7.4.100.0000.01816.25
7.4.90.0170.00016.31
7.4.80.0070.01019.39
7.4.70.0100.00716.36
7.4.60.0100.00616.25
7.4.50.0000.00816.36
7.4.40.0090.00916.50
7.4.30.0070.01016.40
7.4.00.0100.00714.82
7.3.330.0050.00012.95
7.3.320.0000.00513.04
7.3.310.0070.00016.23
7.3.300.0060.00016.06
7.3.290.0100.00316.32
7.3.280.0080.00816.26
7.3.270.0150.00317.40
7.3.260.0030.01416.46
7.3.250.0110.00916.44
7.3.240.0130.00616.38
7.3.230.0180.00316.39
7.3.210.0180.00016.11
7.3.200.0060.01219.39
7.3.190.0070.01016.55
7.3.180.0120.00316.30
7.3.170.0090.01216.37
7.3.160.0090.00616.54
7.3.120.0090.00915.04
7.3.110.0030.01414.72
7.3.100.0060.00614.79
7.3.90.0040.01214.68
7.3.80.0040.01114.78
7.3.70.0060.00914.92
7.3.60.0000.01714.52
7.3.50.0030.01014.48
7.3.40.0030.01014.61
7.3.30.0070.00714.64
7.3.20.0030.01216.62
7.3.10.0030.01016.54
7.3.00.0070.00716.71
7.2.330.0130.00316.36
7.2.320.0030.01316.32
7.2.310.0190.00316.34
7.2.300.0110.00616.58
7.2.290.0060.01316.69
7.2.250.0110.00615.10
7.2.240.0040.01514.94
7.2.230.0070.00714.95
7.2.220.0000.01115.20
7.2.210.0000.01214.83
7.2.200.0030.01214.82
7.2.190.0000.01114.93
7.2.180.0070.00715.15
7.2.170.0030.01014.81
7.2.80.0070.00716.52
7.2.60.0120.00316.54
7.1.330.0100.00315.68
7.1.320.0070.01015.69
7.1.310.0030.01015.84
7.1.300.0070.00715.78
7.1.290.0130.00015.49
7.1.280.0030.00615.32
7.1.270.0030.01315.38
7.1.260.0100.00315.71
7.1.200.0070.00715.46
7.1.70.0000.00717.11
7.1.60.0090.01619.46
7.1.50.0110.01116.86
7.1.00.0070.07322.31
7.0.200.0060.00314.59
7.0.140.0030.07722.02
7.0.60.0200.06719.99
7.0.50.0000.08717.79
7.0.40.0130.07720.19
7.0.30.0200.05020.00
7.0.20.0200.04320.18
7.0.10.0070.08020.16
7.0.00.0030.05020.17
5.6.280.0070.09321.06
5.6.210.0130.06720.76
5.6.200.0000.04318.09
5.6.190.0030.09320.27
5.6.180.0270.07720.56
5.6.170.0330.07320.48
5.6.160.0070.08320.41
5.6.150.0000.05018.18
5.6.140.0030.06018.15
5.6.130.0030.08318.21
5.6.120.0000.06320.96
5.6.110.0100.08020.98
5.6.100.0100.08720.97
5.6.90.0030.06020.99
5.6.80.0100.04320.50
5.6.70.0130.05020.38
5.5.350.0070.07720.31
5.5.340.0070.04017.95
5.5.330.0100.03720.36
5.5.320.0270.05020.20
5.5.310.0330.08020.30
5.5.300.0030.09017.89
5.5.290.0100.07717.88
5.5.280.0000.09020.76
5.5.270.0070.08320.88
5.5.260.0000.04720.84
5.5.250.0100.04720.79
5.5.240.0000.03320.14
5.4.450.0470.04719.61
5.4.440.0800.05019.45
5.4.430.1030.07719.63
5.4.420.0870.05719.54
5.4.410.0130.05319.38
5.4.400.0630.05019.23
5.4.390.0730.06019.19
5.4.380.0330.05718.74
5.4.370.0330.05318.52
5.4.360.0400.05318.73
5.4.350.0370.05718.67
5.4.340.0330.05718.64
5.4.320.0080.03412.45
5.4.310.0030.03912.45
5.4.300.0060.04012.45
5.4.290.0060.04012.45
5.4.280.0070.03312.34
5.4.270.0070.03412.34
5.4.260.0040.04012.35
5.4.250.0080.03512.34
5.4.240.0040.03812.34
5.4.230.0090.03512.34
5.4.220.0050.03612.34
5.4.210.0060.03412.34
5.4.200.0050.03712.34
5.4.190.0070.03612.33
5.4.180.0030.03812.34
5.4.170.0060.04612.35
5.4.160.0060.03512.34
5.4.150.0060.03512.34
5.4.140.0040.03812.02
5.4.130.0060.03612.01
5.4.120.0060.03711.96
5.4.110.0060.03711.96
5.4.100.0040.03611.96
5.4.90.0070.03411.96
5.4.80.0080.03411.97
5.4.70.0110.03011.96
5.4.60.0080.03111.96
5.4.50.0080.03211.96
5.4.40.0030.03811.95
5.4.30.0030.03811.95
5.4.20.0090.03311.95
5.4.10.0060.03711.95
5.4.00.0050.03911.43
5.3.290.0060.04312.80
5.3.280.0050.03712.71
5.3.270.0070.03612.73
5.3.260.0070.03712.72
5.3.250.0060.04212.72
5.3.240.0090.03612.72
5.3.230.0060.04012.71
5.3.220.0060.03812.68
5.3.210.0020.04512.68
5.3.200.0050.03612.68
5.3.190.0080.04112.67
5.3.180.0100.03312.68
5.3.170.0030.04812.67
5.3.160.0060.03612.68
5.3.150.0090.03312.67
5.3.140.0070.04412.66
5.3.130.0070.03712.66
5.3.120.0020.04112.65
5.3.110.0080.03512.66
5.3.100.0100.03112.12
5.3.90.0060.03512.09
5.3.80.0070.04012.07
5.3.70.0060.03512.08
5.3.60.0040.03612.07
5.3.50.0050.03512.00
5.3.40.0070.03312.00
5.3.30.0100.03211.94
5.3.20.0060.03411.71
5.3.10.0040.03411.69
5.3.00.0030.03711.67
5.2.170.0060.0349.18
5.2.160.0050.0319.18
5.2.150.0060.0319.18
5.2.140.0000.0349.17
5.2.130.0040.0339.13
5.2.120.0040.0289.14
5.2.110.0040.0299.14
5.2.100.0030.0349.13
5.2.90.0050.0289.13
5.2.80.0060.0329.13
5.2.70.0090.0309.13
5.2.60.0040.0329.08
5.2.50.0070.0279.06
5.2.40.0050.0289.03
5.2.30.0020.0319.00
5.2.20.0070.0258.99
5.2.10.0040.0278.91
5.2.00.0040.0288.77
5.1.60.0040.0308.06
5.1.50.0040.0318.05
5.1.40.0060.0218.04
5.1.30.0050.0268.39
5.1.20.0050.0278.41
5.1.10.0030.0278.13
5.1.00.0060.0298.13
5.0.50.0050.0186.61
5.0.40.0050.0186.47
5.0.30.0030.0316.29
5.0.20.0030.0196.26
5.0.10.0040.0196.23
5.0.00.0050.0296.23
4.4.90.0040.0204.78
4.4.80.0040.0144.75
4.4.70.0040.0134.76
4.4.60.0020.0204.76
4.4.50.0020.0154.77
4.4.40.0030.0244.71
4.4.30.0040.0144.76
4.4.20.0050.0194.85
4.4.10.0020.0214.85
4.4.00.0020.0294.76
4.3.110.0010.0234.67
4.3.100.0030.0184.67
4.3.90.0040.0174.64
4.3.80.0020.0284.59
4.3.70.0040.0124.63
4.3.60.0020.0164.63
4.3.50.0020.0154.63
4.3.40.0020.0284.54
4.3.30.0020.0153.28
4.3.20.0030.0183.25
4.3.10.0030.0183.21
4.3.00.0100.0307.57

preferences:
45.42 ms | 401 KiB | 5 Q