3v4l.org

run code in 500+ PHP versions simultaneously
<?php $arr = ["a"=>[],"b"=>new class{}]; var_dump(json_encode($arr));

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)
8.5.30.0110.00619.05
8.5.20.0130.00619.34
8.5.10.0130.00716.75
8.5.00.0030.01019.91
8.4.180.0160.00619.68
8.4.170.0120.01120.57
8.4.160.0110.01023.84
8.4.150.0060.00617.76
8.4.140.0150.00617.68
8.4.130.0140.00518.73
8.4.120.0140.00624.02
8.4.110.0120.01022.52
8.4.100.0110.00917.80
8.4.90.0040.00518.46
8.4.80.0100.01119.53
8.4.70.0060.01017.81
8.4.60.0050.00418.91
8.4.50.0060.00420.59
8.4.40.0130.00617.65
8.4.30.0070.01117.85
8.4.20.0160.00319.32
8.4.10.0120.00417.70
8.3.300.0140.00720.70
8.3.290.0110.00820.71
8.3.280.0080.01318.31
8.3.270.0100.00916.47
8.3.260.0050.00416.83
8.3.250.0100.00919.20
8.3.240.0040.00419.00
8.3.230.0140.00616.52
8.3.220.0120.00516.99
8.3.210.0050.00416.68
8.3.200.0050.00416.54
8.3.190.0130.00717.02
8.3.180.0090.00916.51
8.3.170.0000.00718.89
8.3.160.0090.01017.18
8.3.150.0100.01018.80
8.3.140.0040.00419.07
8.3.130.0150.00318.34
8.3.120.0040.00818.79
8.3.110.0040.00420.94
8.3.100.0040.00424.06
8.3.90.0000.00826.77
8.3.80.0090.00016.50
8.3.70.0070.00718.31
8.3.60.0070.01116.63
8.3.50.0110.00516.58
8.3.40.0120.00318.47
8.3.30.0150.00018.48
8.3.20.0040.00421.59
8.3.10.0000.01821.76
8.3.00.0060.00321.77
8.2.300.0130.00622.06
8.2.290.0050.00320.39
8.2.280.0040.00618.14
8.2.270.0070.01117.04
8.2.260.0080.00016.48
8.2.250.0100.01018.64
8.2.240.0060.00318.78
8.2.230.0060.00322.58
8.2.220.0030.00637.54
8.2.210.0030.00526.77
8.2.200.0030.00616.38
8.2.190.0140.00416.58
8.2.180.0040.01125.92
8.2.170.0130.00318.79
8.2.160.0110.00422.96
8.2.150.0040.00425.66
8.2.140.0000.00824.66
8.2.130.0070.00026.16
8.2.120.0140.00420.89
8.2.110.0060.00321.02
8.2.100.0080.00418.03
8.2.90.0030.00519.30
8.2.80.0080.00017.97
8.2.70.0000.00817.61
8.2.60.0040.00417.93
8.2.50.0040.00418.07
8.2.40.0030.00618.06
8.2.30.0040.00418.05
8.2.20.0000.00817.93
8.2.10.0070.00018.11
8.2.00.0000.00718.11
8.1.340.0130.00621.39
8.1.330.0090.01122.05
8.1.320.0130.00616.13
8.1.310.0040.01118.73
8.1.300.0060.00318.04
8.1.290.0070.00430.84
8.1.280.0120.00625.92
8.1.270.0040.00424.66
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0030.00619.27
8.1.230.0040.00719.14
8.1.220.0000.00817.78
8.1.210.0000.00818.77
8.1.200.0000.00917.35
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0040.00418.56
8.1.160.0050.00318.88
8.1.150.0070.00018.88
8.1.140.0050.00217.69
8.1.130.0040.00420.29
8.1.120.0000.00717.46
8.1.110.0040.00417.34
8.1.100.0000.00817.47
8.1.90.0030.00717.34
8.1.80.0000.00917.45
8.1.70.0000.00717.45
8.1.60.0040.00417.58
8.1.50.0070.00017.47
8.1.40.0040.00717.39
8.1.30.0040.00417.70
8.1.20.0040.00417.66
8.1.10.0030.00617.41
8.1.00.0080.00017.29
8.0.300.0000.00818.77
8.0.290.0050.00516.63
8.0.280.0000.00718.42
8.0.270.0000.00716.80
8.0.260.0090.00018.90
8.0.250.0030.00316.93
8.0.240.0030.00316.82
8.0.230.0040.00416.83
8.0.220.0000.00716.78
8.0.210.0070.00016.81
8.0.200.0030.00316.83
8.0.190.0000.00816.81
8.0.180.0030.00316.81
8.0.170.0060.00316.80
8.0.160.0000.00716.83
8.0.150.0090.00016.86
8.0.140.0000.00716.89
8.0.130.0050.00013.35
8.0.120.0000.00716.90
8.0.110.0070.00016.69
8.0.100.0040.00416.87
8.0.90.0040.00416.82
8.0.80.0060.00916.84
8.0.70.0040.00416.91
8.0.60.0080.00016.86
8.0.50.0030.00516.92
8.0.30.0090.00917.13
8.0.20.0090.01017.40
8.0.10.0000.00716.88
8.0.00.0090.00816.59
7.4.330.0000.00515.55
7.4.320.0000.00616.54
7.4.300.0060.00016.52
7.4.290.0040.00416.51
7.4.280.0040.00416.54
7.4.270.0100.00016.43
7.4.260.0070.00016.59
7.4.250.0050.00316.52
7.4.240.0000.00716.57
7.4.230.0000.00716.37
7.4.220.0040.00416.33
7.4.210.0090.00816.56
7.4.200.0060.00316.23
7.4.160.0060.00916.53
7.4.140.0110.00817.86
7.4.130.0170.00616.73
7.4.120.0100.00816.50
7.4.110.0060.01016.63
7.4.100.0090.01516.64
7.4.90.0140.00316.31
7.4.80.0090.01619.39
7.4.70.0090.01316.54
7.4.60.0140.00416.53
7.4.50.0070.00316.53
7.4.40.0130.00416.59
7.4.00.0030.01015.11
7.3.330.0000.00613.25
7.3.320.0000.00613.21
7.3.310.0070.00016.25
7.3.300.0050.00216.09
7.3.290.0000.00716.07
7.3.280.0110.00816.20
7.3.260.0090.00916.17
7.3.240.0110.00616.30
7.3.230.0050.01116.39
7.3.210.0060.00916.36
7.3.200.0070.01016.16
7.3.190.0060.01016.40
7.3.180.0040.01216.23
7.3.170.0110.01216.14
7.3.160.0060.00916.23
7.3.10.0160.00616.57
7.3.00.0170.00316.65
7.2.330.0120.00816.33
7.2.320.0040.01416.71
7.2.310.0030.01316.61
7.2.300.0170.00716.67
7.2.290.0170.00816.73
7.2.130.0150.00316.79
7.2.120.0180.00416.54
7.2.110.0200.00316.98
7.2.100.0000.01516.71
7.2.90.0110.00616.96
7.2.80.0120.00616.79
7.2.70.0120.00916.77
7.2.60.0070.00616.83
7.2.50.0110.00817.01
7.2.40.0740.01117.32
7.2.30.0160.00817.23
7.2.20.0130.01117.18
7.2.10.0770.00717.45
7.2.00.0610.00617.35
7.1.250.0130.00615.46
7.1.240.0130.00615.44
7.1.230.0140.00715.80
7.1.220.0130.00715.65
7.1.210.0100.00715.46
7.1.200.0120.00515.71
7.1.190.0040.01215.82
7.1.180.0150.00415.80
7.1.170.0140.00015.62
7.1.160.0080.01016.05
7.1.150.0130.00815.89
7.1.140.0840.00616.14
7.1.130.0650.00716.24
7.1.120.0460.01216.01
7.1.110.1540.01015.66
7.1.100.0070.01315.79
7.1.90.0090.00915.73
7.1.80.1080.00915.68
7.1.70.0980.01015.34
7.1.60.0990.01224.31
7.1.50.1070.01124.27
7.1.40.0910.01124.08
7.1.30.1080.01424.13
7.1.20.0750.01124.14
7.1.10.0810.00615.32
7.1.00.0110.00815.03
7.0.330.0140.00715.42
5.6.380.0030.00914.06

preferences:
52.38 ms | 1476 KiB | 5 Q