3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public $b; } $a = new A; $a->b = $a; var_dump(serialize($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)
8.3.60.0120.00318.40
8.3.50.0090.00921.09
8.3.40.0040.01118.48
8.3.30.0100.00318.73
8.3.20.0070.00020.22
8.3.10.0050.00323.65
8.3.00.0040.00423.39
8.2.180.0120.00618.13
8.2.170.0140.00022.96
8.2.160.0100.00720.29
8.2.150.0090.00025.66
8.2.140.0120.00024.66
8.2.130.0040.00419.77
8.2.120.0080.00026.35
8.2.110.0040.00722.24
8.2.100.0110.00017.93
8.2.90.0060.00319.05
8.2.80.0040.00418.04
8.2.70.0000.00817.38
8.2.60.0040.00417.91
8.2.50.0000.00818.07
8.2.40.0060.00322.33
8.2.30.0000.00720.66
8.2.20.0000.00717.48
8.2.10.0000.00717.93
8.2.00.0070.00017.91
8.1.280.0150.00025.92
8.1.270.0040.00422.16
8.1.260.0060.00328.09
8.1.250.0000.00828.09
8.1.240.0060.00323.92
8.1.230.0070.00419.10
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0000.00817.35
8.1.190.0040.00417.13
8.1.180.0030.00618.10
8.1.170.0000.00918.46
8.1.160.0050.00220.61
8.1.150.0000.00718.73
8.1.140.0030.00619.49
8.1.130.0000.00717.60
8.1.120.0000.00717.44
8.1.110.0000.01017.34
8.1.100.0000.00817.35
8.1.90.0050.00217.29
8.1.80.0080.00017.39
8.1.70.0000.00717.46
8.1.60.0040.00717.58
8.1.50.0000.00817.50
8.1.40.0080.00017.46
8.1.30.0080.00017.47
8.1.20.0000.00717.62
8.1.10.0020.00517.57
8.1.00.0000.00817.41
8.0.300.0080.00018.77
8.0.290.0070.00016.75
8.0.280.0030.00318.46
8.0.270.0000.00717.06
8.0.260.0030.00317.19
8.0.250.0000.00816.80
8.0.240.0060.00316.88
8.0.230.0030.00316.89
8.0.220.0030.00516.83
8.0.210.0040.00416.73
8.0.200.0050.00216.90
8.0.190.0060.00316.85
8.0.180.0040.00416.84
8.0.170.0040.00416.88
8.0.160.0000.00816.82
8.0.150.0040.00416.71
8.0.140.0040.00416.72
8.0.130.0000.00513.20
8.0.120.0080.00016.77
8.0.110.0100.00016.78
8.0.100.0000.00816.69
8.0.90.0030.00616.70
8.0.80.0030.01816.83
8.0.70.0050.00216.71
8.0.60.0040.00416.70
8.0.50.0000.00716.71
8.0.30.0080.00917.21
8.0.20.0130.00517.40
8.0.10.0040.00416.77
8.0.00.0090.01216.74
7.4.330.0000.00516.67
7.4.320.0030.00316.49
7.4.300.0000.00616.48
7.4.290.0030.00516.51
7.4.280.0070.00316.47
7.4.270.0030.00316.38
7.4.260.0040.00416.41
7.4.250.0000.00716.50
7.4.240.0050.00216.54
7.4.230.0030.00316.43
7.4.220.0150.01316.53
7.4.210.0100.00716.45
7.4.200.0030.00316.54
7.4.160.0030.01316.45
7.4.150.0140.00317.40
7.4.140.0110.01117.86
7.4.130.0150.00616.35
7.4.120.0140.00316.42
7.4.110.0070.01116.52
7.4.100.0030.01916.39
7.4.90.0100.00716.49
7.4.80.0120.01219.39
7.4.70.0060.01016.40
7.4.60.0120.00416.36
7.4.50.0100.00716.36
7.4.40.0090.00916.40
7.4.30.0030.01316.32
7.4.10.0100.00616.18
7.4.00.0090.00815.45
7.3.330.0030.00313.05
7.3.320.0060.00013.24
7.3.310.0050.00316.12
7.3.300.0030.00316.12
7.3.290.0000.00616.28
7.3.280.0090.01016.19
7.3.270.0090.01217.40
7.3.260.0030.01416.23
7.3.250.0110.01016.39
7.3.240.0140.00616.46
7.3.230.0100.00616.39
7.3.210.0090.00916.37
7.3.200.0060.01019.39
7.3.190.0090.01216.29
7.3.180.0090.00616.51
7.3.170.0060.01416.27
7.3.160.0030.01316.34
7.3.130.0040.01216.20
7.3.120.0060.01216.18
7.3.110.0100.00716.53
7.3.100.0030.00616.49
7.3.90.0060.00916.31
7.3.80.0120.00016.22
7.3.70.0030.00716.21
7.3.60.0090.00316.21
7.3.50.0070.01016.43
7.3.40.0060.00916.30
7.3.30.0090.01016.37
7.3.20.0070.01118.11
7.3.10.0070.00317.92
7.3.00.0000.01217.93
7.2.330.0120.00616.69
7.2.320.0110.00616.51
7.2.310.0100.00616.75
7.2.300.0060.01216.58
7.2.290.0130.00316.63
7.2.260.0060.01116.64
7.2.250.0060.01216.50
7.2.240.0070.00716.19
7.2.230.0030.00716.66
7.2.220.0030.00916.38
7.2.210.0110.00416.65
7.2.200.0000.01116.29
7.2.190.0040.00816.50
7.2.180.0060.00916.30
7.2.170.0000.01016.48
7.2.160.0140.00316.36
7.2.150.0190.00018.18
7.2.140.0030.01018.29
7.2.130.0000.01018.25
7.2.120.0030.01018.38
7.2.110.0030.00918.27
7.2.100.0040.00718.43
7.2.90.0040.00718.37
7.2.80.0070.01018.38
7.2.70.0070.01118.18
7.2.60.0110.00718.30
7.2.50.0100.01018.38
7.2.40.0040.01218.43
7.2.30.0100.00718.25
7.2.20.0060.01018.07
7.2.10.0070.00718.29
7.2.00.0030.01018.88
7.1.330.0110.00417.60
7.1.320.0000.01717.50
7.1.310.0040.00817.45
7.1.300.0080.00817.38
7.1.290.0070.00717.26
7.1.280.0030.00717.37
7.1.270.0000.01517.22
7.1.260.0000.01217.30
7.1.250.0060.00617.28
7.1.240.0060.00917.45
7.1.230.0070.00717.34
7.1.220.0030.00617.26
7.1.210.0120.00417.21
7.1.200.0030.01017.23
7.1.190.0000.01417.25
7.1.180.0110.00417.29
7.1.170.0030.01017.44
7.1.160.0070.00717.43
7.1.150.0000.01617.36
7.1.140.0060.00617.32
7.1.130.0120.00417.19
7.1.120.0000.01017.21
7.1.110.0070.00717.38
7.1.100.0060.00517.64
7.1.90.0080.00817.34
7.1.80.0090.00317.22
7.1.70.0020.00917.12
7.1.60.0090.00617.15
7.1.50.0100.01217.17
7.1.40.0000.00917.32
7.1.30.0060.00917.29
7.1.20.0060.00617.36
7.1.10.0120.00317.40
7.1.00.0050.04119.80
7.0.330.0000.01116.84
7.0.320.0040.01217.09
7.0.310.0090.00316.99
7.0.300.0060.01216.93
7.0.290.0070.00717.14
7.0.280.0110.00416.81
7.0.270.0100.00716.84
7.0.260.0040.00717.02
7.0.250.0090.00316.96
7.0.240.0060.01017.18
7.0.230.0090.00916.89
7.0.220.0030.00916.77
7.0.210.0030.01316.84
7.0.200.0020.01216.82
7.0.190.0060.00616.99
7.0.180.0030.00717.05
7.0.170.0090.00617.09
7.0.160.0090.00317.14
7.0.150.0100.00316.80
7.0.140.0030.01016.98
7.0.130.0100.00316.80
7.0.120.0090.00316.94
7.0.110.0070.01017.09
7.0.100.0060.00816.89
7.0.90.0030.01217.04
7.0.80.0120.00017.00
7.0.70.0090.00316.99
7.0.60.0080.04319.43
7.0.50.0060.02517.34
7.0.40.0070.05017.62
7.0.30.0150.02617.53
7.0.20.0080.03217.60
7.0.10.0060.04817.56
7.0.00.0100.04017.59
5.6.400.0040.01116.05
5.6.390.0070.00416.09
5.6.380.0100.00715.78
5.6.370.0000.01215.75
5.6.360.0080.00515.97
5.6.350.0060.01016.30
5.6.340.0120.00415.95
5.6.330.0070.01116.02
5.6.320.0070.00715.96
5.6.310.0090.00016.15
5.6.300.0090.00616.13
5.6.290.0070.01116.06
5.6.280.0080.02718.39
5.6.270.0090.00615.98
5.6.260.0070.01015.79
5.6.250.0060.01015.91
5.6.240.0110.00315.92
5.6.230.0090.00615.93
5.6.220.0030.00615.87
5.6.210.0080.03918.23
5.6.200.0100.04416.94
5.6.190.0120.02318.16
5.6.180.0330.03718.19
5.6.170.0130.03918.11
5.6.160.0130.03818.22
5.6.150.0140.02217.02
5.6.140.0060.03417.04
5.6.130.0070.04317.21
5.6.120.0090.02918.44
5.6.110.0070.04518.40
5.6.100.0090.02618.43
5.6.90.0110.03818.44
5.6.80.0050.04718.10
5.6.70.0060.00915.90
5.6.60.0120.00315.73
5.6.50.0070.00416.23
5.6.40.0040.01115.63
5.6.30.0090.00615.81
5.6.20.0040.00815.68
5.6.10.0130.00315.77
5.6.00.0090.00615.66
5.5.380.0070.00715.78
5.5.370.0050.01515.70
5.5.360.0040.01715.92
5.5.350.0140.02918.02
5.5.340.0080.04816.90
5.5.330.0120.04518.05
5.5.320.0130.03018.09
5.5.310.0170.02518.10
5.5.300.0030.03716.79
5.5.290.0050.03216.92
5.5.280.0090.04518.44
5.5.270.0090.02718.29
5.5.260.0020.02718.29
5.5.250.0080.03818.09
5.5.240.0100.02517.87
5.5.230.0090.00615.71
5.5.220.0110.00415.63
5.5.210.0050.00615.88
5.5.200.0060.00315.61
5.5.190.0040.01415.55
5.5.180.0060.00615.57
5.5.170.0110.00415.41
5.5.160.0100.00615.79
5.5.150.0110.00415.74
5.5.140.0040.00715.75
5.5.130.0060.00615.51
5.5.120.0030.00615.82
5.5.110.0060.00315.76
5.5.100.0040.00815.62
5.5.90.0100.00715.52
5.5.80.0000.01815.51
5.5.70.0060.00615.79
5.5.60.0040.00815.71
5.5.50.0000.01215.86
5.5.40.0000.00915.65
5.5.30.0040.00815.58
5.5.20.0040.01115.75
5.5.10.0100.00315.62
5.5.00.0070.01015.78

preferences:
36.93 ms | 401 KiB | 5 Q