3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b = array_map(function ($a) { return json_encode($a); }, [ 'a' => 'b', 'c' => ['a' => 'b', 'c' => new DateTimeImmutable()], ]); var_dump($b);

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)
8.3.40.0070.01018.73
8.3.30.0060.01218.85
8.3.20.0080.00020.29
8.3.10.0040.00423.55
8.3.00.0080.00019.38
8.2.170.0140.00322.96
8.2.160.0000.01520.30
8.2.150.0030.00624.18
8.2.140.0030.00624.66
8.2.130.0090.00317.75
8.2.120.0120.00326.35
8.2.110.0060.00319.43
8.2.100.0080.00417.88
8.2.90.0040.00419.36
8.2.80.0080.00017.97
8.2.70.0080.00017.75
8.2.60.0030.00617.93
8.2.50.0000.00818.07
8.2.40.0000.00719.28
8.2.30.0000.00720.52
8.2.20.0000.00817.94
8.2.10.0000.00818.25
8.2.00.0090.00018.13
8.1.270.0030.00523.91
8.1.260.0070.00028.09
8.1.250.0040.00428.09
8.1.240.0040.00422.19
8.1.230.0120.00017.78
8.1.220.0030.00617.75
8.1.210.0060.00318.77
8.1.200.0030.00617.47
8.1.190.0000.00817.35
8.1.180.0030.00618.10
8.1.170.0060.00618.74
8.1.160.0040.00422.03
8.1.150.0040.00419.04
8.1.140.0090.00019.69
8.1.130.0000.00717.86
8.1.120.0000.00817.57
8.1.110.0000.00817.54
8.1.100.0030.00317.55
8.1.90.0050.00217.70
8.1.80.0000.00817.69
8.1.70.0070.00017.64
8.1.60.0030.00617.57
8.1.50.0030.00717.64
8.1.40.0060.00317.65
8.1.30.0030.00617.80
8.1.20.0000.00717.71
8.1.10.0060.00317.60
8.1.00.0040.00417.66
8.0.300.0030.00418.77
8.0.290.0080.00017.00
8.0.280.0040.00418.34
8.0.270.0070.00017.25
8.0.260.0060.00017.34
8.0.250.0000.00717.09
8.0.240.0040.00417.12
8.0.230.0000.00717.07
8.0.220.0030.00316.95
8.0.210.0030.00317.01
8.0.200.0000.00717.02
8.0.190.0040.00417.20
8.0.180.0040.00417.04
8.0.170.0050.00317.16
8.0.160.0030.00517.05
8.0.150.0040.00417.04
8.0.140.0000.00916.95
8.0.130.0000.00613.43
8.0.120.0000.00816.96
8.0.110.0000.00817.08
8.0.100.0040.00417.16
8.0.90.0000.00716.98
8.0.80.0000.01517.05
8.0.70.0040.00416.98
8.0.60.0040.00416.91
8.0.50.0000.00816.99
8.0.30.0080.00917.13
8.0.20.0150.00417.40
8.0.10.0050.00217.23
8.0.00.0100.00716.92
7.4.330.0020.00216.79
7.4.320.0070.00016.65
7.4.300.0030.00316.71
7.4.290.0070.00016.63
7.4.280.0030.00616.65
7.4.270.0080.00016.65
7.4.260.0030.00316.64
7.4.250.0000.00716.51
7.4.240.0020.00516.71
7.4.230.0070.00016.84
7.4.220.0110.01816.68
7.4.210.0050.00916.70
7.4.200.0030.00316.45
7.4.160.0040.01116.68
7.4.150.0110.00617.40
7.4.140.0110.00717.86
7.4.130.0120.00716.55
7.4.120.0050.01416.73
7.4.110.0100.01416.64
7.4.100.0140.00416.56
7.4.90.0180.00416.54
7.4.80.0150.00919.39
7.4.70.0130.00516.80
7.4.60.0130.01016.57
7.4.50.0060.00916.45
7.4.40.0100.00716.41
7.4.30.0070.01716.55
7.4.00.0130.00315.19
7.3.330.0020.00413.39
7.3.320.0050.00313.23
7.3.310.0000.00816.18
7.3.300.0000.00716.39
7.3.290.0040.00416.30
7.3.280.0100.00516.35
7.3.270.0030.01417.40
7.3.260.0170.00016.50
7.3.250.0130.00416.64
7.3.240.0130.00716.50
7.3.230.0130.00516.39
7.3.210.0130.00416.45
7.3.200.0140.00316.63
7.3.190.0120.00416.41
7.3.180.0150.00616.26
7.3.170.0060.01616.38
7.3.160.0070.01416.34
7.3.120.0110.00715.23
7.3.110.0060.01014.58
7.3.100.0100.00315.18
7.3.90.0130.00314.98
7.3.80.0070.01114.61
7.3.70.0030.01014.68
7.3.60.0040.01114.95
7.3.50.0090.00615.02
7.3.40.0100.00314.85
7.3.30.0080.00614.97
7.3.20.0040.00816.78
7.3.10.0080.00616.55
7.3.00.0070.00916.78
7.2.330.0120.00616.75
7.2.320.0000.01616.50
7.2.310.0100.01016.75
7.2.300.0130.01016.79
7.2.290.0030.01616.87
7.2.250.0030.01615.06
7.2.240.0120.00615.09
7.2.230.0060.01215.34
7.2.220.0030.01314.80
7.2.210.0030.01315.34
7.2.200.0030.01315.08
7.2.190.0030.01315.16
7.2.180.0040.00415.19
7.2.170.0040.00715.12
7.2.130.0100.00317.04
7.2.120.0030.01017.13
7.2.110.0030.00617.13
7.2.100.0110.00316.66
7.2.90.0100.00317.00
7.2.80.0000.01217.20
7.2.70.0090.00617.07
7.2.60.0050.00816.95
7.2.50.0030.00616.95
7.2.40.0000.01216.93
7.2.30.0030.00716.95
7.2.20.0100.00317.16
7.2.10.0060.01016.89
7.2.00.0060.00818.11
7.1.330.0070.00715.96
7.1.320.0070.00716.11
7.1.310.0050.00515.65
7.1.300.0060.00615.95
7.1.290.0060.00915.44
7.1.280.0060.01215.71
7.1.270.0110.00415.77
7.1.260.0070.00415.99
7.1.250.0060.00615.73
7.1.200.0000.01015.89
7.1.100.0080.00318.25
7.1.70.0050.00217.34
7.1.60.0040.01919.36
7.1.50.0120.00917.11
7.1.00.0000.08022.29
7.0.200.0040.00417.00
7.0.90.0100.04020.08
7.0.80.0070.03719.82
7.0.70.0070.06319.83
7.0.60.0100.06319.79
7.0.50.0100.07020.26
7.0.40.0070.05320.05
7.0.30.0070.04020.13
7.0.20.0030.04320.18
7.0.10.0070.04020.13
7.0.00.0000.04720.11
5.6.280.0030.04320.91
5.6.240.0100.03720.59
5.6.230.0000.04320.70
5.6.220.0030.04020.68
5.6.210.0070.07720.38
5.6.200.0030.03721.05
5.6.190.0000.05021.04
5.6.180.0030.03721.04
5.6.170.0070.05721.10
5.6.160.0000.05321.00
5.6.150.0070.08021.17
5.6.140.0070.04021.04
5.6.130.0100.04021.03
5.6.120.0030.04320.96
5.6.110.0030.04321.16
5.6.100.0100.05721.09
5.6.90.0030.03721.14
5.6.80.0030.04320.43
5.6.70.0100.07320.55
5.6.60.0070.03720.47
5.6.50.0000.07020.34
5.6.40.0030.05320.29
5.6.30.0100.03020.42
5.6.20.0100.07720.40
5.6.10.0130.06720.43
5.6.00.0000.04020.30
5.5.380.0070.06720.30
5.5.370.0030.04020.36
5.5.360.0030.04020.30
5.5.350.0000.04720.42
5.5.340.0030.07720.91
5.5.330.0070.03720.87
5.5.320.0030.05320.93
5.5.310.0000.04020.77
5.5.300.0070.03320.82
5.5.290.0070.05020.88
5.5.280.0070.06320.89
5.5.270.0030.04320.75
5.5.260.0000.04720.85
5.5.250.0000.05320.68
5.5.240.0130.04020.14
5.5.230.0000.04720.18
5.5.220.0000.05320.25
5.5.210.0070.03720.21
5.5.200.0070.04320.00
5.5.190.0030.04320.10
5.5.180.0070.06720.25
5.5.160.0100.06020.24
5.5.150.0100.07020.11
5.5.140.0070.05320.20
5.5.130.0170.07020.15
5.5.120.0170.05720.14
5.5.110.0030.08020.07
5.5.100.0230.06320.11
5.5.90.0070.07720.06
5.5.80.0100.04320.00
5.5.70.0100.07720.04
5.5.60.0130.05319.89
5.5.50.0030.05720.14
5.5.40.0070.07320.06
5.5.30.0070.07320.14
5.5.20.0030.06020.14
5.5.10.0100.04320.00
5.5.00.0170.06720.04

preferences:
48.5 ms | 400 KiB | 5 Q