3v4l.org

run code in 300+ PHP versions simultaneously
<?php class T implements Serializable { protected $_data = array('a' => 1, 'b' => 2, 'c' => 3, 'd' => array( 'x', 'y', 'z', )); public function serialize() { $vars = get_object_vars($this); var_dump($vars); $vars['_data']['d'] = serialize($vars['_data']['d']); var_dump($vars); return serialize($_data); } }

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)
8.3.60.0090.00918.43
8.3.50.0150.00321.92
8.3.40.0110.00418.71
8.3.30.0070.00719.07
8.3.20.0040.00420.29
8.3.10.0050.00321.65
8.3.00.0060.00319.13
8.2.180.0120.00318.29
8.2.170.0070.01122.96
8.2.160.0070.00720.58
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00419.23
8.2.110.0050.00519.30
8.2.100.0040.00817.63
8.2.90.0030.00619.09
8.2.80.0050.00317.97
8.2.70.0070.00317.63
8.2.60.0070.00017.93
8.2.50.0000.00918.07
8.2.40.0040.00419.76
8.2.30.0080.00018.07
8.2.20.0000.00817.79
8.2.10.0040.00417.91
8.2.00.0000.00817.71
8.1.280.0170.00025.92
8.1.270.0090.00018.83
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00323.84
8.1.230.0110.00017.52
8.1.220.0050.00317.74
8.1.210.0080.00018.77
8.1.200.0030.00617.23
8.1.190.0040.00417.22
8.1.180.0040.00418.10
8.1.170.0000.00818.59
8.1.160.0030.00621.93
8.1.150.0030.00518.83
8.1.140.0040.00417.26
8.1.130.0030.00317.83
8.1.120.0000.00717.43
8.1.110.0000.00817.43
8.1.100.0000.00717.29
8.1.90.0070.00017.41
8.1.80.0000.00717.32
8.1.70.0040.00417.35
8.1.60.0060.00317.41
8.1.50.0030.00517.37
8.1.40.0060.00317.45
8.1.30.0040.00417.50
8.1.20.0040.00417.43
8.1.10.0000.00717.40
8.1.00.0000.00717.34
8.0.300.0040.00418.77
8.0.290.0000.00816.75
8.0.280.0030.00518.39
8.0.270.0000.00817.20
8.0.260.0070.00017.14
8.0.250.0030.00316.96
8.0.240.0030.00316.89
8.0.230.0040.00416.95
8.0.220.0060.00016.91
8.0.210.0030.00316.84
8.0.200.0060.00016.94
8.0.190.0030.00516.86
8.0.180.0000.00716.88
8.0.170.0040.00416.89
8.0.160.0040.00416.95
8.0.150.0030.00716.73
8.0.140.0000.00716.88
8.0.130.0060.00013.38
8.0.120.0040.00416.86
8.0.110.0040.00416.91
8.0.100.0040.00416.89
8.0.90.0030.00316.84
8.0.80.0070.01116.97
8.0.70.0000.00716.78
8.0.60.0090.00016.77
8.0.50.0040.00416.95
8.0.30.0080.00517.00
8.0.20.0100.00817.40
8.0.10.0070.00016.88
8.0.00.0070.01016.55
7.4.330.0000.00515.03
7.4.320.0030.00316.46
7.4.300.0000.00616.34
7.4.290.0030.00316.46
7.4.280.0040.00416.58
7.4.270.0000.00716.43
7.4.260.0030.00316.44
7.4.250.0040.00416.33
7.4.240.0030.00316.50
7.4.230.0070.00016.34
7.4.220.0090.01516.55
7.4.210.0040.01116.49
7.4.200.0020.00516.19
7.4.160.0040.01116.43
7.4.150.0100.00917.40
7.4.140.0070.01717.86
7.4.130.0100.01016.47
7.4.120.0120.00816.53
7.4.110.0070.01016.51
7.4.100.0110.00716.32
7.4.90.0140.00316.34
7.4.80.0060.01119.39
7.4.70.0070.01016.36
7.4.60.0100.00716.55
7.4.50.0050.00016.46
7.4.40.0120.00416.28
7.4.30.0140.00916.42
7.4.00.0030.01314.86
7.3.330.0030.00213.20
7.3.320.0060.00613.19
7.3.310.0030.00316.22
7.3.300.0070.00016.23
7.3.290.0060.00916.27
7.3.280.0040.01216.21
7.3.270.0150.00317.40
7.3.260.0120.01216.25
7.3.250.0110.01316.49
7.3.240.0070.01016.11
7.3.230.0190.00316.39
7.3.210.0150.00916.35
7.3.200.0130.00319.39
7.3.190.0030.01316.38
7.3.180.0140.01016.55
7.3.170.0130.00316.44
7.3.160.0070.01116.30
7.2.330.0130.00916.60
7.2.320.0130.01016.60
7.2.310.0150.00616.32
7.2.300.0030.01616.64
7.2.290.0040.01216.53
7.2.60.0060.00916.92
7.2.00.0090.00319.10
7.1.200.0000.00915.64
7.1.100.0090.00917.72
7.1.70.0000.00717.16
7.1.60.0070.01719.50
7.1.50.0130.01016.86
7.1.00.0030.07722.31
7.0.200.0780.00613.96
7.0.140.0000.05722.04
7.0.60.0030.04320.00
7.0.50.0100.06717.86
7.0.40.0130.07020.39
7.0.30.0300.03720.15
7.0.20.0330.07320.15
7.0.10.0300.06720.07
7.0.00.0030.05720.12
5.6.280.0000.07721.05
5.6.210.0030.05020.63
5.6.200.0030.05318.27
5.6.190.0130.06720.46
5.6.180.0270.03720.50
5.6.170.0300.07720.51
5.6.160.0030.09020.55
5.6.150.0070.08018.12
5.6.140.0170.07018.19
5.6.130.0070.06718.18
5.6.120.0070.04720.99
5.6.110.0000.09321.12
5.6.100.0130.07320.96
5.6.90.0100.06721.13
5.6.80.0070.08020.38
5.6.70.0130.03020.28
5.5.350.0270.07020.37
5.5.340.0100.04318.09
5.5.330.0170.07320.43
5.5.320.0030.06720.46
5.5.310.0170.07720.13
5.5.300.0070.08017.94
5.5.290.0100.07017.98
5.5.280.0070.04020.77
5.5.270.0100.08320.97
5.5.260.0100.07020.75
5.5.250.0030.04320.71
5.5.240.0030.06720.18
5.4.450.0730.05719.34
5.4.440.0800.06319.54
5.4.430.0470.04319.65
5.4.420.0900.06719.41
5.4.410.0200.04318.94
5.4.400.0270.05318.87
5.4.390.0370.05318.79
5.4.380.0470.05318.80
5.4.370.0200.05018.78
5.4.360.0630.06318.47
5.4.350.0170.06018.79
5.4.340.0230.06318.70
5.4.320.0300.05018.61
5.4.310.0230.05018.78
5.4.300.0200.05018.76
5.4.290.0200.06718.77
5.4.280.0300.06718.61
5.4.270.0230.05018.46
5.4.260.0300.06018.61
5.4.250.0400.05018.84
5.4.240.0330.04318.71
5.4.230.1130.05318.74
5.4.220.0270.05318.55
5.4.210.1200.06718.80
5.4.200.0130.05716.57
5.4.190.0130.06018.68
5.4.180.0270.05318.68
5.4.170.0430.05018.69
5.4.160.0500.06718.73
5.4.150.1330.04318.71
5.4.140.0130.06016.28
5.4.130.0470.05716.19
5.4.120.0270.06016.23
5.4.110.1400.05716.43
5.4.100.0270.05016.34
5.4.90.0330.06016.23
5.4.80.0330.05716.41
5.4.70.0370.05016.18
5.4.60.0430.05016.30
5.4.50.0230.04316.40
5.4.40.0200.05316.26
5.4.30.0100.05716.29
5.4.20.0170.05316.29
5.4.10.0230.04716.23
5.4.00.0230.04715.74
5.3.290.0170.06014.83
5.3.280.0370.05714.59
5.3.270.0300.06314.64
5.3.260.0270.07014.61
5.3.250.0200.07014.63
5.3.240.0200.07314.73
5.3.230.0200.04314.65
5.3.220.0070.05714.58
5.3.210.0500.06314.68
5.3.200.1200.05014.70
5.3.190.0430.06314.68
5.3.180.0200.06714.79
5.3.170.2100.06714.61
5.3.160.0330.07714.59
5.3.150.0200.07314.77
5.3.140.0300.06014.69
5.3.130.1200.05314.68
5.3.120.0300.05714.53
5.3.110.1230.05714.55
5.3.100.0170.05714.09
5.3.90.0230.06314.21
5.3.80.1070.05014.07
5.3.70.0200.05714.07
5.3.60.1230.05014.13
5.3.50.0230.05314.06
5.3.40.0370.05314.07
5.3.30.0200.05313.96
5.3.20.0200.05713.91
5.3.10.0300.04013.78
5.3.00.1530.05013.70
5.2.170.0130.04311.19
5.2.160.0130.04711.25
5.2.150.0100.04711.24
5.2.140.0300.04311.26
5.2.130.0170.04011.20
5.2.120.0230.03311.20
5.2.110.0230.04311.15
5.2.100.0130.05311.12
5.2.90.0270.04311.13
5.2.80.0100.04711.17
5.2.70.0170.04311.20
5.2.60.0170.03711.16
5.2.50.0830.04011.02
5.2.40.0130.04311.04
5.2.30.0200.05010.97
5.2.20.0200.04710.94
5.2.10.0270.03711.09
5.2.00.0070.04310.84
5.1.60.0070.04310.18
5.1.50.0200.03010.03
5.1.40.0100.03310.09
5.1.30.0170.03310.37
5.1.20.0100.03710.53
5.1.10.0070.04010.19
5.1.00.0230.04010.10
5.0.50.0000.0378.68
5.0.40.0070.0278.50
5.0.30.0070.0478.32
5.0.20.0030.0338.38
5.0.10.0070.0278.27
5.0.00.0070.0438.18
4.4.90.0100.0175.88
4.4.80.0030.0235.98
4.4.70.0070.0235.93
4.4.60.0030.0275.93
4.4.50.0030.0235.90
4.4.40.0070.0336.01
4.4.30.0070.0205.98
4.4.20.0030.0235.98
4.4.10.0030.0276.05
4.4.00.0070.0335.90
4.3.110.0000.0275.89
4.3.100.0070.0205.83
4.3.90.0100.0235.79
4.3.80.0030.0375.77
4.3.70.0100.0275.80
4.3.60.0030.0275.89
4.3.50.0130.0175.80
4.3.40.0030.0375.75
4.3.30.0100.0174.66
4.3.20.0030.0234.68
4.3.10.0000.0274.56
4.3.00.0000.0236.95

preferences:
33.71 ms | 401 KiB | 5 Q