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); } public function unserialize($vars) {} }

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)
8.3.60.0190.00018.50
8.3.50.0120.00622.04
8.3.40.0040.01118.53
8.3.30.0040.01119.14
8.3.20.0050.00320.16
8.3.10.0030.00521.78
8.3.00.0080.00019.21
8.2.180.0140.00018.04
8.2.170.0120.00922.96
8.2.160.0100.00320.35
8.2.150.0090.00024.18
8.2.140.0050.00324.66
8.2.130.0070.00026.16
8.2.120.0000.00819.36
8.2.110.0100.00019.27
8.2.100.0040.00817.75
8.2.90.0000.00819.06
8.2.80.0080.00017.97
8.2.70.0060.00317.38
8.2.60.0080.00017.91
8.2.50.0000.00818.07
8.2.40.0080.00019.95
8.2.30.0090.00018.00
8.2.20.0040.00417.61
8.2.10.0060.00317.86
8.2.00.0000.00717.54
8.1.280.0100.00725.92
8.1.270.0040.00418.79
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.00922.19
8.1.230.0000.01119.44
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0060.00317.22
8.1.190.0000.00817.11
8.1.180.0030.00618.10
8.1.170.0080.00018.64
8.1.160.0000.00721.94
8.1.150.0040.00418.80
8.1.140.0030.00517.37
8.1.130.0070.00017.71
8.1.120.0000.00717.41
8.1.110.0040.00417.31
8.1.100.0070.00017.41
8.1.90.0020.00517.39
8.1.80.0000.00717.45
8.1.70.0040.00417.46
8.1.60.0000.00817.57
8.1.50.0000.00817.36
8.1.40.0000.00817.35
8.1.30.0050.00317.48
8.1.20.0070.00017.58
8.1.10.0050.00317.35
8.1.00.0040.00417.34
8.0.300.0040.00418.77
8.0.290.0030.00316.63
8.0.280.0030.00318.30
8.0.270.0000.00717.19
8.0.260.0000.00617.18
8.0.250.0000.00616.89
8.0.240.0030.00316.92
8.0.230.0040.00416.79
8.0.220.0070.00016.85
8.0.210.0050.00216.74
8.0.200.0030.00316.89
8.0.190.0070.00016.88
8.0.180.0000.00716.91
8.0.170.0000.00816.81
8.0.160.0040.00416.86
8.0.150.0000.00716.75
8.0.140.0000.00716.77
8.0.130.0000.00513.22
8.0.120.0000.00716.68
8.0.110.0000.00816.84
8.0.100.0000.00716.68
8.0.90.0040.00416.68
8.0.80.0070.01016.83
8.0.70.0000.00716.63
8.0.60.0060.00316.82
8.0.50.0050.00316.68
8.0.30.0140.00817.04
8.0.20.0080.01217.40
8.0.10.0070.00016.83
8.0.00.0100.00616.59
7.4.330.0000.00515.03
7.4.320.0060.00016.40
7.4.300.0060.00016.46
7.4.290.0000.00716.46
7.4.280.0040.00416.54
7.4.270.0060.00016.52
7.4.260.0000.00716.57
7.4.250.0000.00716.54
7.4.240.0000.00716.53
7.4.230.0030.00316.36
7.4.220.0210.00316.50
7.4.210.0120.00916.41
7.4.200.0040.00416.47
7.4.160.0070.01316.32
7.4.150.0140.00417.40
7.4.140.0120.01017.86
7.4.130.0090.01116.39
7.4.120.0050.01316.45
7.4.110.0090.01016.39
7.4.100.0080.01116.27
7.4.90.0130.00316.26
7.4.80.0030.01519.39
7.4.70.0080.01316.53
7.4.60.0050.01116.31
7.4.50.0000.00616.47
7.4.40.0100.01016.59
7.4.30.0040.01416.50
7.4.00.0060.01014.88
7.3.330.0000.00613.19
7.3.320.0060.00613.06
7.3.310.0070.00016.21
7.3.300.0070.00016.20
7.3.290.0100.00716.19
7.3.280.0050.01116.17
7.3.270.0120.00617.40
7.3.260.0170.00616.18
7.3.250.0100.01016.33
7.3.240.0070.01116.45
7.3.230.0100.01416.39
7.3.210.0090.00916.19
7.3.200.0110.00519.39
7.3.190.0120.00616.57
7.3.180.0100.01016.26
7.3.170.0090.01216.54
7.3.160.0090.00616.25
7.3.10.0080.00416.58
7.3.00.0070.00316.28
7.2.330.0130.00716.64
7.2.320.0240.00016.60
7.2.310.0040.01516.64
7.2.300.0130.01016.37
7.2.290.0130.01016.19
7.2.130.0030.00916.79
7.2.120.0040.00716.55
7.2.110.0110.00416.86
7.2.100.0150.00316.50
7.2.90.0040.00716.82
7.2.80.0050.00916.46
7.2.70.0120.00016.84
7.2.60.0110.00416.86
7.2.50.0120.00416.62
7.2.40.0060.00916.75
7.2.30.0060.00916.89
7.2.20.0070.00516.86
7.2.10.0090.00516.58
7.2.00.0040.01417.90
7.1.250.0160.00315.26
7.1.200.0080.00415.58
7.1.100.0030.00818.01
7.1.70.0060.00616.79
7.1.60.0070.01719.50
7.1.50.0000.01816.82
7.1.00.0000.08022.54
7.0.200.1330.00414.91
7.0.140.0070.06722.09
7.0.60.0100.08319.80
7.0.50.0130.07317.72
7.0.40.0070.05320.09
7.0.30.0170.04720.08
7.0.20.0230.05720.06
7.0.10.0270.04720.23
7.0.00.0100.07720.14
5.6.280.0070.07020.79
5.6.210.0200.06720.54
5.6.200.0100.08018.18
5.6.190.0100.08020.67
5.6.180.0200.04020.65
5.6.170.0200.05320.71
5.6.160.0130.05320.47
5.6.150.0000.08718.15
5.6.140.0130.06318.18
5.6.130.0030.04318.11
5.6.120.0100.09721.05
5.6.110.0070.08020.99
5.6.100.0130.08021.11
5.6.90.0000.09020.94
5.6.80.0130.07020.53
5.6.70.0130.03720.38
5.5.350.0270.07320.39
5.5.340.0130.07317.98
5.5.330.0000.07020.27
5.5.320.0070.08320.19
5.5.310.0330.07320.41
5.5.300.0030.08317.98
5.5.290.0130.06018.01
5.5.280.0070.04020.80
5.5.270.0070.07020.88
5.5.260.0070.08320.86
5.5.250.0070.03720.69
5.5.240.0070.04020.28
5.4.450.0700.06019.34
5.4.440.0930.05319.47
5.4.430.0830.06019.54
5.4.420.0500.05719.33
5.4.410.0100.05718.71
5.4.400.0430.06718.50
5.4.390.0270.06018.84
5.4.380.0200.05718.81
5.4.370.0170.06318.81
5.4.360.0200.07318.54
5.4.350.0170.06018.73
5.4.340.0370.03718.70
5.4.320.0300.04718.54
5.4.310.0300.04318.70
5.4.300.0200.05318.73
5.4.290.0230.05318.74
5.4.280.0200.05018.69
5.4.270.0030.07318.80
5.4.260.0270.04718.46
5.4.250.0270.05018.80
5.4.240.0230.05318.70
5.4.230.1530.05718.57
5.4.220.0100.06318.83
5.4.210.1670.05718.57
5.4.200.0200.05016.61
5.4.190.0130.05718.61
5.4.180.0300.04318.48
5.4.170.0300.04718.72
5.4.160.0170.05018.70
5.4.150.0670.04318.82
5.4.140.1800.06316.25
5.4.130.0370.05016.20
5.4.120.0300.04716.27
5.4.110.0230.06316.28
5.4.100.0230.05716.32
5.4.90.0300.04316.23
5.4.80.0300.06716.32
5.4.70.0370.05316.41
5.4.60.1070.05016.43
5.4.50.0370.05716.43
5.4.40.2170.05316.21
5.4.30.1270.05016.38
5.4.20.1370.05316.22
5.4.10.0330.04316.39
5.4.00.0370.04315.68
5.3.290.0200.05714.83
5.3.280.0400.04314.64
5.3.270.0070.06714.71
5.3.260.0230.06314.63
5.3.250.0130.05714.78
5.3.240.1230.05314.71
5.3.230.0100.06714.66
5.3.220.0170.05314.70
5.3.210.0100.06014.71
5.3.200.0230.06714.63
5.3.190.0200.05314.81
5.3.180.0230.05314.70
5.3.170.0200.05314.59
5.3.160.0170.05714.73
5.3.150.0330.06714.59
5.3.140.0230.06714.67
5.3.130.0130.06314.59
5.3.120.0170.06314.59
5.3.110.0370.06714.73
5.3.100.0370.06014.23
5.3.90.0400.05714.19
5.3.80.0170.06314.05
5.3.70.0370.06014.15
5.3.60.0270.06014.12
5.3.50.2500.07014.05
5.3.40.0230.05314.07
5.3.30.0230.05713.94
5.3.20.1600.05013.69
5.3.10.1530.06013.77
5.3.00.0230.06013.66
5.2.170.0270.05011.17
5.2.160.0200.05311.25
5.2.150.3870.05711.37
5.2.140.0400.04011.18
5.2.130.0470.04711.31
5.2.120.0400.05011.13
5.2.110.0330.05011.12
5.2.100.0270.04711.33
5.2.90.0270.04711.21
5.2.80.0200.05011.21
5.2.70.0230.05011.14
5.2.60.0300.03711.15
5.2.50.0330.03311.09
5.2.40.0100.05711.05
5.2.30.0230.04011.07
5.2.20.0130.05011.17
5.2.10.0230.04310.97
5.2.00.0400.05010.82
5.1.60.0200.03710.00
5.1.50.0230.03710.02
5.1.40.0130.04310.10
5.1.30.0130.04010.44
5.1.20.0170.04010.48
5.1.10.0270.03310.25
5.1.00.0230.04710.07
5.0.50.0200.0378.55
5.0.40.0130.0308.40
5.0.30.0100.0608.35
5.0.20.0130.0238.34
5.0.10.0100.0278.16
5.0.00.0030.0478.17
4.4.90.0030.0275.89
4.4.80.0130.0205.98
4.4.70.0170.0175.92
4.4.60.0070.0305.91
4.4.50.0130.0205.99
4.4.40.0070.0375.89
4.4.30.0170.0175.87
4.4.20.0100.0275.93
4.4.10.0130.0205.94
4.4.00.0100.0435.90
4.3.110.0130.0275.83
4.3.100.0070.0275.81
4.3.90.0030.0335.86
4.3.80.0100.0375.87
4.3.70.0070.0275.82
4.3.60.0130.0205.78
4.3.50.0030.0335.89
4.3.40.0100.0335.79
4.3.30.0230.0234.57
4.3.20.0030.0334.53
4.3.10.0070.0234.54
4.3.00.0130.0206.95

preferences:
41.38 ms | 401 KiB | 5 Q