3v4l.org

run code in 300+ PHP versions simultaneously
<?php $o = new class extends stdClass { private $ccc = 222; }; $o->aaa = 1; $o->bbb = false; $a = [$o]; var_dump(json_encode($a));

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)
8.3.60.0090.00918.13
8.3.50.0110.00720.13
8.3.40.0070.00720.34
8.3.30.0120.00418.50
8.3.20.0070.00024.18
8.3.10.0030.00524.66
8.3.00.0030.01426.16
8.2.180.0070.00725.92
8.2.170.0170.00319.09
8.2.160.0070.00722.96
8.2.150.0070.00025.66
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0000.00726.16
8.2.110.0030.00620.93
8.2.100.0070.00317.91
8.2.90.0040.00417.75
8.2.80.0090.00318.77
8.2.70.0050.00317.50
8.2.60.0050.00317.50
8.2.50.0080.00017.98
8.2.40.0000.00818.22
8.2.30.0040.00418.15
8.2.20.0000.00719.36
8.2.10.0040.00418.06
8.2.00.0070.00019.20
8.1.280.0100.00625.92
8.1.270.0040.00424.66
8.1.260.0070.00026.35
8.1.250.0000.00828.09
8.1.240.0060.00323.81
8.1.230.0040.00822.67
8.1.220.0040.00418.52
8.1.210.0060.00319.04
8.1.200.0080.00017.35
8.1.190.0000.00918.75
8.1.180.0080.00318.10
8.1.170.0000.00717.62
8.1.160.0000.00718.89
8.1.150.0000.00718.70
8.1.140.0040.00417.38
8.1.130.0040.00419.01
8.1.120.0030.00517.36
8.1.110.0120.00617.44
8.1.100.0120.00617.29
8.1.90.0110.00717.45
8.1.80.0170.00217.32
8.1.70.0160.00317.45
8.1.60.0170.00317.57
8.1.50.0160.00417.39
8.1.40.0170.00317.41
8.1.30.0180.00317.66
8.1.20.0120.00817.64
8.1.10.0100.01017.58
8.1.00.0170.00317.52
8.0.300.0040.00420.02
8.0.290.0060.00316.75
8.0.280.0030.00318.43
8.0.270.0000.00717.28
8.0.260.0070.00018.32
8.0.250.0000.00816.79
8.0.240.0030.00516.89
8.0.230.0080.00816.78
8.0.220.0160.00016.80
8.0.210.0120.00416.92
8.0.200.0110.00616.80
8.0.190.0160.00316.88
8.0.180.0150.00316.91
8.0.170.0160.00016.90
8.0.160.0130.00316.79
8.0.150.0110.00416.89
8.0.140.0050.01116.90
8.0.130.0120.00416.86
8.0.120.0000.01616.79
8.0.110.0170.00016.80
8.0.100.0130.00316.74
8.0.90.0160.00016.91
8.0.80.0100.00616.76
8.0.70.0090.00816.74
8.0.60.0120.00616.76
8.0.50.0170.00016.79
8.0.30.0130.00316.77
8.0.20.0140.00416.96
8.0.10.0160.00016.88
7.4.330.0050.00015.55
7.4.320.0150.00316.63
7.4.300.0110.00716.43
7.4.290.0090.00316.29
7.4.280.0190.00016.57
7.4.270.0180.00016.63
7.4.260.0120.00316.45
7.4.250.0170.00016.63
7.4.240.0190.00016.46
7.4.230.0180.00016.50
7.4.220.0140.00516.50
7.4.210.0150.00416.44
7.4.200.0170.00016.57
7.4.190.0110.00616.61
7.4.180.0060.01116.55
7.4.160.0180.00016.66
7.4.150.0100.00516.48
7.4.140.0170.00016.50
7.4.130.0160.00316.34
7.4.120.0140.00316.30
7.4.110.0130.00316.29
7.4.100.0140.00316.41
7.4.90.0110.00716.50
7.4.80.0080.00816.37
7.4.70.0140.00416.50
7.4.60.0120.00416.46
7.4.50.0130.00416.39
7.4.40.0040.00416.15
7.4.30.0040.00416.25
7.4.20.0070.00016.30
7.4.10.0030.00316.54
7.4.00.0030.00316.16

preferences:
48.3 ms | 400 KiB | 5 Q