3v4l.org

run code in 300+ PHP versions simultaneously
<?php $instance = new SimpleClass(); $assigned = $instance; $reference =& $instance; $istance->var = '$assigned avrà questo valore'; $instance = null; // $instance e $reference diventano null var_dump($instance); var_dump($reference); var_dump($assigned); ?>

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)
8.3.40.0150.00618.82
8.3.30.0040.01919.14
8.3.20.0040.01520.29
8.3.10.0040.01522.04
8.3.00.0090.00922.43
8.2.170.0000.01922.96
8.2.160.0120.00920.82
8.2.150.0160.00324.18
8.2.140.0160.00324.66
8.2.130.0120.00626.16
8.2.120.0040.01117.50
8.2.110.0060.00322.14
8.2.100.0080.00417.78
8.2.90.0040.00419.14
8.2.80.0000.00917.97
8.2.70.0080.00017.63
8.2.60.0090.00017.92
8.2.50.0090.00018.07
8.2.40.0040.00418.16
8.2.30.0040.00417.89
8.2.20.0040.00417.53
8.2.10.0080.00019.38
8.2.00.0070.00317.64
8.1.270.0040.01423.79
8.1.260.0070.01326.35
8.1.250.0110.00728.09
8.1.240.0060.00323.83
8.1.230.0070.00319.08
8.1.220.0080.00017.74
8.1.210.0000.00818.77
8.1.200.0060.00317.23
8.1.190.0030.00617.30
8.1.180.0000.00918.10
8.1.170.0040.00718.65
8.1.160.0040.00421.95
8.1.150.0040.00418.45
8.1.140.0070.00017.27
8.1.130.0070.00017.71
8.1.120.0040.00417.39
8.1.110.0000.00817.36
8.1.100.0000.00717.22
8.1.90.0040.00417.20
8.1.80.0000.00717.23
8.1.70.0000.00717.34
8.1.60.0080.00017.34
8.1.50.0050.00317.45
8.1.40.0030.00617.33
8.1.30.0030.00517.48
8.1.20.0040.00417.60
8.1.10.0030.00617.48
8.1.00.0000.00817.50
8.0.300.0080.00018.77
8.0.290.0000.00717.15
8.0.280.0000.00718.23
8.0.270.0000.00717.14
8.0.260.0050.00316.82
8.0.250.0000.00716.95
8.0.240.0000.00816.96
8.0.230.0000.00716.93
8.0.220.0030.00316.91
8.0.210.0030.00316.84
8.0.200.0030.00316.94
8.0.190.0030.00516.95
8.0.180.0000.00716.80
8.0.170.0000.00816.91
8.0.160.0040.00416.93
8.0.150.0070.00016.72
8.0.140.0000.00716.90
8.0.130.0040.00413.33
8.0.120.0040.00416.88
8.0.110.0070.00016.83
8.0.100.0050.00216.71
8.0.90.0070.00016.87
8.0.80.0120.00316.81
8.0.70.0070.00016.69
8.0.60.0040.00416.95
8.0.50.0040.00416.79
8.0.30.0160.00517.05
8.0.20.0110.00817.40
8.0.10.0050.00316.82
8.0.00.0110.01016.58
7.4.330.0000.00615.00
7.4.320.0030.00316.49
7.4.300.0030.00316.44
7.4.290.0000.00716.43
7.4.280.0040.00416.41
7.4.270.0000.00716.46
7.4.260.0040.00416.42
7.4.250.0000.00816.55
7.4.240.0020.00516.50
7.4.230.0020.00516.42
7.4.220.0170.00716.55
7.4.210.0070.00716.50
7.4.200.0070.00016.35
7.4.190.0030.00516.50
7.4.160.0040.01316.39
7.4.150.0090.00917.40
7.4.140.0140.00317.86
7.4.130.0130.00316.40
7.4.120.0140.00616.54
7.4.110.0070.01416.64
7.4.100.0090.00916.63
7.4.90.0180.00016.41
7.4.80.0070.01016.55
7.4.70.0060.01516.39
7.4.60.0140.00316.44
7.4.50.0030.00516.62
7.4.40.0110.00722.77
7.4.30.0160.00016.40
7.4.00.0030.01315.15
7.3.330.0000.00613.20
7.3.320.0000.00613.06
7.3.310.0070.00016.14
7.3.300.0000.00716.27
7.3.290.0060.00916.20
7.3.280.0100.00816.26
7.3.270.0160.00317.40
7.3.260.0040.01216.47
7.3.250.0120.00816.40
7.3.240.0150.00616.22
7.3.230.0040.01816.45
7.3.210.0090.00916.20
7.3.200.0240.00619.39
7.3.190.0070.01016.46
7.3.180.0060.00916.29
7.3.170.0130.00616.42
7.3.160.0080.01316.31
7.3.120.0100.00314.71
7.3.10.0080.00516.45
7.3.00.0070.00516.65
7.2.330.0030.01616.53
7.2.320.0090.00616.19
7.2.310.0140.00816.57
7.2.300.0070.01716.34
7.2.290.0140.00316.50
7.2.130.0060.00916.74
7.2.120.0060.00816.49
7.2.110.0100.00316.77
7.2.100.0070.00516.74
7.2.90.0070.00716.75
7.2.80.0050.00616.64
7.2.70.0060.00616.60
7.2.60.0100.00816.79
7.2.50.0040.01216.42
7.2.40.0030.01216.62
7.2.30.0050.01016.75
7.2.20.0080.00516.86
7.2.10.0050.00616.67
7.2.00.0070.00616.77
7.1.250.0060.00615.66
7.1.200.0120.00015.72
7.1.100.0030.00918.11
7.1.70.0020.00516.97
7.1.60.0170.00719.82
7.1.50.0150.00416.54
7.1.00.0070.07322.28
7.0.200.0100.00516.61
7.0.140.0100.06722.13
7.0.60.0070.04019.82
7.0.50.0070.07317.77
7.0.40.0070.07720.30
7.0.30.0500.07020.33
7.0.20.0270.03720.13
7.0.10.0230.03720.13
7.0.00.0100.05320.00
5.6.280.0030.07321.09
5.6.210.0200.06720.74
5.6.200.0100.04718.11
5.6.190.0130.08020.77
5.6.180.3930.02720.43
5.6.170.0230.08020.51
5.6.160.0030.09020.41
5.6.150.0100.05018.16
5.6.140.0000.05718.21
5.6.130.0100.08018.18
5.6.120.0130.07320.98
5.6.110.0100.08320.96
5.6.100.0030.08320.98
5.6.90.0030.09321.00
5.6.80.0070.03720.43
5.6.70.3970.04020.43
5.5.350.0070.07720.41
5.5.340.0100.07717.98
5.5.330.0070.08020.19
5.5.320.0130.06720.13
5.5.310.0300.06320.20
5.5.300.0030.06018.01
5.5.290.0070.08717.98
5.5.280.0030.09020.80
5.5.270.0000.04720.84
5.5.260.0130.04020.88
5.5.250.0100.07320.68
5.5.240.0100.08020.25
5.4.450.0400.05719.48
5.4.440.0770.04719.61
5.4.430.0100.05719.54
5.4.420.0730.07019.50
5.4.410.0100.05719.02
5.4.400.0430.06718.75
5.4.390.0230.06318.71
5.4.380.0170.06018.70
5.4.370.0070.05318.58
5.4.360.0030.05718.71
5.4.350.0100.03811.97
5.4.340.0080.03511.97
5.4.320.0040.03912.45
5.4.310.0070.03612.45
5.4.300.0080.03912.45
5.4.290.0120.04512.45
5.4.280.0050.04512.35
5.4.270.0030.03912.35
5.4.260.0070.04212.35
5.4.250.0050.04712.35
5.4.240.0070.04612.35
5.4.230.0080.03812.34
5.4.220.0060.03612.34
5.4.210.0070.04112.34
5.4.200.0040.03912.34
5.4.190.0170.04312.34
5.4.180.0170.04112.34
5.4.170.0190.04012.35
5.4.160.0330.08812.34
5.4.150.0200.04012.34
5.4.140.0280.09012.02
5.4.130.0260.09412.01
5.4.120.0180.03911.97
5.4.110.0460.07211.96
5.4.100.0220.04411.96
5.4.90.0310.09011.96
5.4.80.0350.08811.96
5.4.70.0430.07411.96
5.4.60.0300.08711.96
5.4.50.0340.08511.96
5.4.40.0170.04211.95
5.4.30.0180.04111.95
5.4.20.0250.06911.95
5.4.10.0170.04211.95
5.4.00.0260.09411.44
5.3.290.0080.03612.80
5.3.280.0090.04512.71
5.3.270.0190.04512.72
5.3.260.0240.04012.72
5.3.250.0400.08212.72
5.3.240.0300.09112.72
5.3.230.0310.09112.71
5.3.220.0190.06712.68
5.3.210.0180.04712.68
5.3.200.0310.09212.68
5.3.190.0140.04912.68
5.3.180.0160.04512.67
5.3.170.0330.08812.67
5.3.160.0270.06812.68
5.3.150.0210.04012.68
5.3.140.0410.08112.66
5.3.130.0250.08012.65
5.3.120.0240.04712.66
5.3.110.0190.04112.65
5.3.100.0420.14012.12
5.3.90.0180.04112.09
5.3.80.0400.09112.07
5.3.70.0300.09712.08
5.3.60.0330.08912.07
5.3.50.0300.06112.00
5.3.40.0180.04312.00
5.3.30.0190.04111.95
5.3.20.0360.08511.73
5.3.10.0330.08911.69
5.3.00.0250.07811.68
5.2.170.0140.0359.19
5.2.160.0350.0459.18
5.2.150.0350.0789.19
5.2.140.0170.0349.18
5.2.130.0700.0709.14
5.2.120.0140.0349.15
5.2.110.0170.0419.15
5.2.100.0210.0279.15
5.2.90.0190.0349.15
5.2.80.0210.0349.14
5.2.70.0260.0879.14
5.2.60.0140.0399.10
5.2.50.0280.0589.07
5.2.40.0120.0379.04
5.2.30.0340.0789.02
5.2.20.0150.0339.01
5.2.10.0340.0758.92
5.2.00.0340.0728.78
5.1.60.0130.0278.07
5.1.50.0270.0468.06
5.1.40.0150.0248.05
5.1.30.0250.0528.39
5.1.20.0120.0338.43
5.1.10.0160.0318.14
5.1.00.0420.0618.14
5.0.50.0080.0276.62
5.0.40.0120.0216.48
5.0.30.0120.0646.30
5.0.20.0200.0726.27
5.0.10.0110.0216.24
5.0.00.0180.0616.23
4.4.90.0100.0164.78
4.4.80.0280.0584.75
4.4.70.0080.0174.76
4.4.60.0090.0184.75
4.4.50.0190.0664.77
4.4.40.0110.0364.71
4.4.30.0100.0164.76
4.4.20.0340.0514.85
4.4.10.0120.0134.84
4.4.00.0060.0304.76
4.3.110.0200.0664.67
4.3.100.0080.0164.66
4.3.90.0090.0164.63
4.3.80.0050.0304.58
4.3.70.0260.0594.63
4.3.60.0080.0174.63
4.3.50.0040.0204.63
4.3.40.0070.0284.54
4.3.30.0060.0183.28
4.3.20.0050.0183.27
4.3.10.0030.0203.23
4.3.00.0130.0238.15

preferences:
37.96 ms | 400 KiB | 5 Q