3v4l.org

run code in 500+ PHP versions simultaneously
<?php class SimpleClass { } $instance = new SimpleClass(); $assigned = $instance; $reference =& $instance; $instance->var = '$assigned will have this value'; $instance = null; // $instance and $reference become null var_dump($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)
8.5.90.0130.00617.07
8.5.80.0100.00716.72
8.5.70.0050.00216.58
8.5.60.0110.00716.86
8.5.50.0100.00718.35
8.5.30.0110.00619.28
8.5.20.0160.00717.93
8.5.10.0110.00816.77
8.5.00.0120.00920.04
8.4.240.0120.01019.67
8.4.230.0070.00319.52
8.4.220.0120.00719.63
8.4.210.0070.00221.48
8.4.180.0110.01019.70
8.4.170.0110.01423.75
8.4.160.0120.00923.82
8.4.150.0080.00516.88
8.4.140.0100.01217.70
8.4.130.0120.00817.62
8.4.120.0040.00520.62
8.4.110.0100.01022.49
8.4.100.0120.00717.86
8.4.90.0050.00417.92
8.4.80.0050.00317.96
8.4.70.0120.01017.55
8.4.60.0100.00317.70
8.4.50.0110.00917.61
8.4.40.0100.01017.60
8.4.30.0000.00818.67
8.4.20.0100.00717.89
8.4.10.0050.00319.63
8.3.320.0120.00818.47
8.3.310.0050.00418.55
8.3.300.0090.01220.05
8.3.290.0110.00920.91
8.3.280.0120.00918.49
8.3.270.0100.00916.55
8.3.260.0150.00416.62
8.3.250.0100.00818.80
8.3.240.0120.00716.52
8.3.230.0050.00516.64
8.3.220.0060.00417.24
8.3.210.0110.00816.53
8.3.200.0130.00616.64
8.3.190.0140.00516.56
8.3.180.0080.01016.64
8.3.170.0110.00720.63
8.3.160.0120.00620.18
8.3.150.0130.00718.64
8.3.140.0040.00416.91
8.3.130.0100.00016.89
8.3.120.0070.01118.95
8.3.110.0030.00620.94
8.3.100.0090.00016.60
8.3.90.0090.00918.42
8.3.80.0100.00018.56
8.3.70.0100.00716.88
8.3.60.0090.00918.38
8.3.50.0170.00316.85
8.3.40.0140.00719.97
8.3.30.0120.00320.25
8.3.20.0100.00821.89
8.3.10.0110.00622.73
8.3.00.0140.00420.73
8.2.320.0090.01018.23
8.2.310.0120.01018.13
8.2.300.0120.01118.54
8.2.290.0020.00720.65
8.2.280.0090.00918.55
8.2.270.0040.01517.25
8.2.260.0150.00418.46
8.2.250.0080.00016.80
8.2.240.0060.00316.72
8.2.230.0030.00622.58
8.2.220.0040.00424.06
8.2.210.0140.00726.77
8.2.200.0040.00418.42
8.2.190.0120.00318.31
8.2.180.0070.01018.54
8.2.170.0100.00718.91
8.2.160.0100.01022.96
8.2.150.0120.00519.96
8.2.140.0120.00621.35
8.2.130.0090.00622.26
8.2.120.0110.00420.93
8.2.110.0110.00420.82
8.2.100.0070.00720.62
8.2.90.0130.00320.53
8.2.80.0080.00820.71
8.2.70.0100.00720.36
8.2.60.0090.00620.54
8.2.50.0100.00720.75
8.2.40.0070.01120.56
8.2.30.0040.01220.20
8.2.20.0130.00420.27
8.2.10.0120.00620.46
8.2.00.0120.00420.56
8.1.340.0130.00619.73
8.1.330.0090.00916.85
8.1.320.0080.01116.19
8.1.310.0070.01018.25
8.1.300.0150.00016.39
8.1.290.0040.00418.88
8.1.280.0030.01025.92
8.1.270.0120.00622.93
8.1.260.0030.01023.74
8.1.250.0060.01023.80
8.1.240.0120.00320.32
8.1.230.0070.01020.28
8.1.220.0180.00020.60
8.1.210.0110.00720.23
8.1.200.0060.00920.48
8.1.190.0130.01318.56
8.1.180.0140.00720.08
8.1.170.0090.00920.47
8.1.160.0120.00620.23
8.1.150.0080.00820.52
8.1.140.0130.00320.17
8.1.130.0080.00820.35
8.1.120.0090.00920.34
8.1.110.0070.01020.13
8.1.100.0160.00020.29
8.1.90.0140.00320.33
8.1.80.0130.00321.44
8.1.70.0030.01320.29
8.1.60.0090.00620.48
8.1.50.0200.00418.45
8.1.40.0140.00718.53
8.1.30.0130.00720.52
8.1.20.0180.00420.00
8.1.10.0130.00718.57
8.1.00.0140.00420.05
7.4.00.0250.00916.29

preferences:
45.77 ms | 1058 KiB | 5 Q