3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Main implements \JsonSerializable { private $objA=[], $objB=[]; public function start() { for ($i = 0; $i < 10; $i++) { $objB=$this->getObjBandAddToStack($i); $this->objA[]=new ClassA($objB); } } private function getObjBandAddToStack($i) { if(isset($this->objB[$i/2])) { $objB=$this->objB[$i/2]; } else { $objB=new ClassB(); $this->objB[$i]=$objB; } return $objB; } public function jsonSerialize(){ return [ 'objA' => $this->objA, 'objB' => $this->objB, ]; } } class ClassA implements \JsonSerializable { private $objB; public function __construct(ClassB $objB) { $this->objB=$objB; $objB->joinGroup($this); } public function jsonSerialize(){ return [ 'objB' => $this->objB, ]; } } class ClassB implements \JsonSerializable { private $objAgroup=[]; public function joinGroup($objA) { $this->objAgroup[]=$objA; } public function jsonSerialize(){ return [ 'objAgroup' => $this->objAgroup, ]; } } $main=new Main(); $main->start(); var_dump(json_encode($main)); var_dump(json_last_error()); var_dump(json_last_error_msg());

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)
8.5.10.0080.01016.78
8.5.00.0120.01021.88
8.4.160.0120.00924.00
8.4.150.0020.00014.05
8.4.140.0110.00917.91
8.4.130.0170.00517.97
8.4.120.0140.00620.62
8.4.110.0110.01122.50
8.4.100.0150.00617.92
8.4.90.0110.00818.86
8.4.80.0040.00418.84
8.4.70.0110.00918.04
8.4.60.0100.01018.63
8.4.50.0130.00717.88
8.4.40.0100.01017.88
8.4.30.0130.00619.36
8.4.20.0120.00820.34
8.4.10.0030.00619.67
8.3.280.0110.00818.50
8.3.270.0140.00716.82
8.3.260.0150.00416.98
8.3.250.0130.00818.80
8.3.240.0140.00616.61
8.3.230.0060.00516.90
8.3.220.0050.00418.87
8.3.210.0090.00916.96
8.3.200.0130.00816.71
8.3.190.0030.00517.08
8.3.180.0100.01216.82
8.3.170.0070.01119.00
8.3.160.0040.01516.53
8.3.150.0100.01017.29
8.3.140.0160.00016.55
8.3.130.0030.00718.73
8.3.120.0090.00619.01
8.3.110.0040.00420.94
8.3.100.0060.00324.06
8.3.90.0090.00926.77
8.3.80.0070.00317.97
8.3.70.0090.00918.81
8.3.60.0070.01118.55
8.3.50.0100.00517.18
8.3.40.0120.00318.76
8.3.30.0040.01119.02
8.3.20.0030.00518.89
8.3.10.0000.00723.68
8.3.00.0070.00021.95
8.2.290.0080.00620.58
8.2.280.0040.00418.59
8.2.270.0070.01117.28
8.2.260.0100.01018.99
8.2.250.0090.00618.69
8.2.240.0070.01018.95
8.2.230.0000.01022.58
8.2.220.0090.00937.54
8.2.210.0150.00426.77
8.2.200.0000.00916.38
8.2.190.0090.00918.36
8.2.180.0130.00716.47
8.2.170.0060.00922.96
8.2.160.0030.01219.38
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0060.00318.78
8.2.110.0030.00622.06
8.2.100.0130.00317.91
8.2.90.0060.00318.00
8.2.80.0000.00818.05
8.2.70.0000.00818.16
8.2.60.0060.00318.16
8.2.50.0040.00418.10
8.2.40.0040.00419.46
8.2.30.0070.00020.69
8.2.20.0040.00418.14
8.2.10.0080.00018.31
8.2.00.0000.00719.50
8.1.330.0110.00821.80
8.1.320.0060.00516.21
8.1.310.0110.00716.72
8.1.300.0090.00020.03
8.1.290.0080.00430.84
8.1.280.0120.00325.92
8.1.270.0040.00420.83
8.1.260.0120.00626.35
8.1.250.0050.00328.09
8.1.240.0030.01017.51
8.1.230.0060.00622.55
8.1.220.0090.00017.74
8.1.210.0000.00818.90
8.1.200.0080.00017.36
8.1.190.0060.00317.35
8.1.180.0040.00418.10
8.1.170.0000.00818.71
8.1.160.0040.00418.83
8.1.150.0000.00718.81
8.1.140.0030.00620.54
8.1.130.0040.00419.19
8.1.120.0040.00417.48
8.1.110.0000.00817.30
8.1.100.0000.00917.49
8.1.90.0000.00817.37
8.1.80.0040.00417.48
8.1.70.0000.00817.51
8.1.60.0080.00017.50
8.1.50.0040.00417.56
8.1.40.0000.00817.56
8.1.30.0070.00417.62
8.1.20.0040.00417.61
8.1.10.0060.00317.57
8.1.00.0000.00817.41
8.0.300.0000.00719.63
8.0.290.0070.00216.75
8.0.280.0080.00018.39
8.0.270.0030.00417.28
8.0.260.0030.00316.91
8.0.250.0030.00317.02
8.0.240.0000.00717.08
8.0.230.0030.00517.09
8.0.220.0040.00417.05
8.0.210.0000.00717.01
8.0.200.0040.00416.96
8.0.190.0000.00717.02
8.0.180.0000.00717.00
8.0.170.0060.00316.87
8.0.160.0040.00416.96
8.0.150.0070.00016.99
8.0.140.0040.00416.87
8.0.130.0060.00013.38
8.0.120.0030.00616.91
8.0.110.0000.00817.04
8.0.100.0000.00717.03
8.0.90.0070.00017.09
8.0.80.0090.01116.97
8.0.70.0050.00316.83
8.0.60.0000.00816.99
8.0.50.0050.00316.95
8.0.30.0120.00817.07
8.0.20.0120.00917.40
8.0.10.0040.00417.13
8.0.00.0090.01016.66
7.4.330.0050.00015.55
7.4.320.0030.00316.47
7.4.300.0030.00316.50
7.4.290.0000.00816.42
7.4.280.0030.00616.41
7.4.270.0000.00716.61
7.4.260.0070.00316.56
7.4.250.0000.00716.59
7.4.240.0000.00816.51
7.4.230.0030.00316.57
7.4.220.0030.00516.28
7.4.210.0000.01416.60
7.4.200.0050.00216.64
7.4.160.0070.00916.54
7.4.140.0090.01117.86
7.4.130.0130.00616.57
7.4.120.0120.00816.52
7.4.110.0040.01316.55
7.4.100.0100.01016.41
7.4.90.0060.01216.47
7.4.80.0150.00619.39
7.4.70.0090.00616.41
7.4.60.0070.01016.41
7.4.50.0060.00916.54
7.4.40.0120.00616.66
7.4.00.0130.00015.11
7.3.330.0000.00513.39
7.3.320.0070.00013.35
7.3.310.0000.00816.23
7.3.300.0070.00016.20
7.3.290.0070.00016.40
7.3.280.0070.00916.36
7.3.260.0110.00616.44
7.3.240.0120.00916.37
7.3.230.0070.01016.38
7.3.210.0130.00716.69
7.3.200.0070.01016.48
7.3.190.0030.01216.41
7.3.180.0130.00616.52
7.3.170.0100.00716.42
7.3.160.0110.00816.42
7.3.10.0080.01616.12
7.3.00.0120.00916.86
7.2.330.0090.01216.83
7.2.320.0130.00316.48
7.2.310.0110.01316.61
7.2.300.0150.00416.83
7.2.290.0090.00616.49
7.2.130.0040.01416.68
7.2.120.0090.00916.48
7.2.110.0080.01516.29
7.2.100.0100.01016.45
7.2.90.0370.01215.49
7.2.80.0340.00515.98
7.2.70.0320.00815.65
7.2.60.0300.01015.74
7.2.50.0330.00815.83
7.2.40.0290.00715.79
7.2.30.0300.01015.95
7.2.20.0320.00815.73
7.2.10.0260.00515.71
7.2.00.0300.00515.92
7.1.250.0060.01215.32
7.1.210.0530.01413.90
7.1.200.0600.00713.93
7.1.190.0670.00713.61
7.1.180.0630.01013.84
7.1.170.0380.01313.70
7.1.160.0510.00713.86
7.1.150.0460.00314.19
7.1.140.0510.00313.95
7.1.130.0470.01013.92
7.1.120.0560.00013.98
7.1.110.0600.00713.93
7.1.100.0510.00713.71
7.1.90.0740.00313.92
7.1.80.0430.01213.43
7.1.70.0360.00613.94
7.1.60.0630.01031.82
7.1.50.0680.00731.91
7.1.40.0740.01331.82
7.1.30.0670.00931.58
7.1.20.0800.00731.86
7.1.10.0540.00614.03
7.1.00.0360.01313.98

preferences:
203.66 ms | 403 KiB | 5 Q