3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public ?int $foo; } $a = new A; var_dump(json_encode($a)); var_dump(serialize($a)); var_dump((array) $a); $a->foo = 42; var_dump(json_encode($a)); var_dump(serialize($a)); var_dump((array) $a); $a->foo = null; var_dump(json_encode($a)); var_dump(serialize($a)); var_dump((array) $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)
8.3.70.0180.00016.50
8.3.60.0150.00818.56
8.3.50.0090.00618.14
8.3.40.0210.00018.84
8.3.30.0090.00918.67
8.3.20.0000.00820.90
8.3.10.0070.00020.38
8.3.00.0040.00420.68
8.2.190.0100.01016.58
8.2.180.0090.00618.42
8.2.170.0060.00922.96
8.2.160.0110.00322.12
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0000.00826.16
8.2.110.0030.00620.43
8.2.100.0090.00317.78
8.2.90.0000.00817.72
8.2.80.0080.00018.64
8.2.70.0040.00417.66
8.2.60.0120.00017.79
8.2.50.0060.00318.10
8.2.40.0080.00019.18
8.2.30.0000.00719.10
8.2.20.0030.00517.88
8.2.10.0050.00319.27
8.2.00.0040.00419.23
8.1.280.0070.00725.92
8.1.270.0040.00420.75
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00418.79
8.1.230.0040.00822.27
8.1.220.0050.00317.74
8.1.210.0030.00518.77
8.1.200.0060.00317.36
8.1.190.0040.00417.36
8.1.180.0000.00718.99
8.1.170.0030.00618.52
8.1.160.0040.00419.00
8.1.150.0050.00318.89
8.1.140.0040.00422.05
8.1.130.0070.00020.14
8.1.120.0030.00617.46
8.1.110.0000.00817.41
8.1.100.0030.00717.31
8.1.90.0020.00517.30
8.1.80.0050.00317.38
8.1.70.0030.00317.46
8.1.60.0080.00017.59
8.1.50.0050.00317.45
8.1.40.0030.00517.51
8.1.30.0080.00317.59
8.1.20.0040.00417.57
8.1.10.0000.00917.52
8.1.00.0040.00417.30
8.0.300.0040.00418.77
8.0.290.0050.00316.58
8.0.280.0040.00418.30
8.0.270.0040.00417.26
8.0.260.0000.00619.95
8.0.250.0030.00316.86
8.0.240.0000.00716.77
8.0.230.0000.00716.79
8.0.220.0040.00416.70
8.0.210.0000.00816.87
8.0.200.0060.00016.78
8.0.190.0040.00416.87
8.0.180.0080.00016.75
8.0.170.0000.00916.82
8.0.160.0000.00716.90
8.0.150.0070.00016.64
8.0.140.0030.00616.80
8.0.130.0030.00313.26
8.0.120.0000.00816.80
8.0.110.0030.00516.74
8.0.100.0040.00416.65
8.0.90.0030.00616.81
8.0.80.0050.01216.82
8.0.70.0040.00416.90
8.0.60.0070.00016.66
8.0.50.0050.00316.70
8.0.30.0130.00917.08
8.0.20.0090.00917.21
8.0.10.0000.00816.83
8.0.00.0120.00616.68
7.4.330.0000.00515.55
7.4.320.0040.00416.61
7.4.300.0000.00616.59
7.4.290.0000.00816.50
7.4.280.0060.00316.57
7.4.270.0040.00416.43
7.4.260.0050.00013.29
7.4.250.0040.00416.61
7.4.240.0020.00516.44
7.4.230.0030.00316.63
7.4.220.0030.00316.65
7.4.210.0070.01016.67
7.4.200.0040.00416.68
7.4.140.0140.00417.86
7.4.130.0040.01316.63
7.4.120.0100.00816.37
7.4.110.0160.00416.44
7.4.100.0090.01016.40
7.4.90.0090.00816.56
7.4.80.0060.01017.96
7.4.70.0090.00816.50
7.4.60.0080.00916.44
7.4.50.0050.01116.41
7.4.40.0100.00816.56
7.4.30.0070.01016.55
7.4.20.0120.00416.43
7.4.10.0070.01115.73
7.4.00.0090.00715.12
7.3.330.0030.00616.22
7.3.320.0050.00013.21
7.3.310.0000.00716.11
7.3.300.0040.00416.08
7.3.290.0050.00916.20
7.3.280.0100.00316.13
7.3.260.0090.01216.33
7.3.240.0080.00916.22
7.3.230.0150.00416.30
7.3.220.0100.00716.18
7.3.210.0100.00616.25
7.3.200.0120.00516.33
7.3.190.0020.01516.35
7.3.180.0120.00916.13
7.3.170.0060.01416.18
7.3.160.0110.00816.31
7.3.150.0030.01216.48
7.3.140.0060.01516.21
7.3.130.0080.00915.60
7.3.120.0080.00815.05
7.3.110.0090.00815.15
7.3.100.0060.00815.18
7.3.90.0080.00715.25
7.3.80.0060.00915.08
7.3.70.0080.00515.14
7.3.60.0120.00515.21
7.3.50.0060.00815.06
7.3.40.0110.00815.13
7.3.30.0060.01015.10
7.3.20.0080.00815.89
7.3.10.0090.00815.73
7.3.00.0130.00415.80
7.2.330.0050.01416.26
7.2.320.0100.01016.41
7.2.310.0090.01116.43
7.2.300.0090.00916.18
7.2.290.0070.01016.29
7.2.280.0140.00416.57
7.2.270.0060.01016.30
7.2.260.0080.00915.44
7.2.250.0070.01015.43
7.2.240.0100.00515.24
7.2.230.0080.00815.29
7.2.220.0030.01215.20
7.2.210.0070.00915.26
7.2.200.0040.00915.25
7.2.190.0090.00815.28
7.2.180.0090.00815.31
7.2.170.0060.01015.24
7.2.160.0050.01015.50
7.2.150.0100.00716.49
7.2.140.0060.01116.56
7.2.130.0070.00916.59
7.2.120.0120.00616.46
7.2.110.0100.01016.53
7.2.100.0120.00516.56
7.2.90.0110.00716.45
7.2.80.0110.00316.57
7.2.70.0050.01116.69
7.2.60.0070.00916.54
7.2.50.0110.00416.47
7.2.40.0050.01016.44
7.2.30.0070.00916.45
7.2.20.0050.01116.59
7.2.10.0110.00816.51
7.2.00.0050.01216.50

preferences:
18.24 ms | 401 KiB | 5 Q