3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Widget implements Serializable { public $references = array(); public function serialize() { $vars = get_object_vars($this); $serialized = serialize($vars); return $serialized; } public function unserialize($serialized) { $array = unserialize($serialized); foreach($array as $k => $v) $this->$k = $v; } } class Placeholder { public $id; public function __construct($id) { $this->id = $id; } } $placeholder1 = new Placeholder(1); $placeholder2 = new Placeholder(2); $widgets = array(new Widget, new Widget, new Widget, new Widget); $widgets[0]->references[] = $placeholder1; $widgets[1]->references[] = $placeholder2; $widgets[2]->references[] = $placeholder1; $widgets[3]->references[] = $placeholder1; echo serialize($widgets);

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)
8.3.60.0080.00818.53
8.3.50.0120.00721.98
8.3.40.0140.00418.88
8.3.30.0070.00718.84
8.3.20.0000.00818.85
8.3.10.0080.00021.05
8.3.00.0050.00223.43
8.2.180.0120.00616.63
8.2.170.0090.00922.96
8.2.160.0110.00320.44
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0030.00619.54
8.2.110.0090.00921.05
8.2.100.0030.00717.84
8.2.90.0030.00517.88
8.2.80.0040.00418.48
8.2.70.0000.00817.63
8.2.60.0090.00017.63
8.2.50.0050.00318.04
8.2.40.0050.00318.05
8.2.30.0050.00221.13
8.2.20.0040.00417.63
8.2.10.0030.00517.64
8.2.00.0000.00717.64
8.1.280.0120.00925.92
8.1.270.0030.00523.99
8.1.260.0050.00326.35
8.1.250.0080.00028.09
8.1.240.0030.00622.55
8.1.230.0060.00620.92
8.1.220.0030.00618.60
8.1.210.0000.00818.77
8.1.200.0000.00817.35
8.1.190.0000.00817.35
8.1.180.0080.00018.10
8.1.170.0000.00817.62
8.1.160.0040.00418.91
8.1.150.0000.00718.50
8.1.140.0080.00017.46
8.1.130.0000.00717.90
8.1.120.0060.00317.48
8.1.110.0070.00017.35
8.1.100.0040.00417.44
8.1.90.0040.00417.31
8.1.80.0080.00017.46
8.1.70.0000.00717.50
8.1.60.0030.00517.42
8.1.50.0040.00417.46
8.1.40.0030.00517.43
8.1.30.0030.00617.65
8.1.20.0040.00417.64
8.1.10.0000.00717.61
8.1.00.0040.00417.54
8.0.300.0050.00318.77
8.0.290.0040.00416.75
8.0.280.0040.00418.57
8.0.270.0000.00717.15
8.0.260.0030.00516.83
8.0.250.0000.00716.91
8.0.240.0060.00316.85
8.0.230.0000.00716.86
8.0.220.0040.00416.80
8.0.210.0000.00716.95
8.0.200.0000.00816.92
8.0.190.0000.00816.99
8.0.180.0080.00016.90
8.0.170.0040.00416.93
8.0.160.0030.00316.96
8.0.150.0030.00316.73
8.0.140.0040.00416.88
8.0.130.0000.00513.32
8.0.120.0070.00016.82
8.0.110.0040.00416.77
8.0.100.0040.00416.73
8.0.90.0040.00416.81
8.0.80.0170.00016.85
8.0.70.0030.00516.90
8.0.60.0040.00416.76
8.0.50.0040.00416.86
8.0.30.0120.00917.03
8.0.20.0100.00817.40
8.0.10.0040.00417.03
8.0.00.0080.01116.83
7.4.330.0060.00014.77
7.4.320.0060.00016.48
7.4.300.0000.00616.62
7.4.290.0070.00016.38
7.4.280.0030.00416.51
7.4.270.0000.00716.46
7.4.260.0020.00313.30
7.4.250.0090.00016.34
7.4.240.0070.00016.63
7.4.230.0070.00016.64
7.4.220.0090.00916.61
7.4.210.0090.00616.59
7.4.200.0030.00316.59
7.4.190.0000.00716.67
7.4.160.0130.01016.53
7.4.150.0100.00717.40
7.4.140.0080.01417.86
7.4.130.0080.01016.47
7.4.120.0060.01216.63
7.4.110.0100.00716.59
7.4.100.0140.01016.53
7.4.90.0140.00516.41
7.4.80.0070.01319.37
7.4.70.0130.00316.36
7.4.60.0030.01416.66
7.4.50.0000.00716.48
7.4.40.0110.00622.52
7.4.30.0080.01416.56
7.4.00.0040.00814.95
7.3.330.0000.00613.19
7.3.320.0040.00813.39
7.3.310.0030.00516.37
7.3.300.0000.00716.20
7.3.290.0120.00916.44
7.3.280.0080.01116.36
7.3.270.0070.01017.40
7.3.260.0070.01218.24
7.3.250.0100.00716.38
7.3.240.0090.00616.39
7.3.230.0140.00316.57
7.3.210.0070.01016.32
7.3.200.0040.01419.39
7.3.190.0070.01016.39
7.3.180.0100.00716.68
7.3.170.0030.02016.41
7.3.160.0120.00416.43
7.3.120.0030.01314.90
7.3.10.0070.00416.59
7.3.00.0080.00816.74
7.2.330.0070.01016.71
7.2.320.0030.01516.63
7.2.310.0130.01016.50
7.2.300.0110.00616.55
7.2.290.0120.01216.72
7.2.130.0080.00416.82
7.2.120.0110.00317.01
7.2.110.0100.00716.60
7.2.100.0060.00316.80
7.2.90.0030.01416.84
7.2.80.0170.00316.61
7.2.70.0050.00916.80
7.2.60.0000.01416.91
7.2.50.0060.00916.70
7.2.40.0080.00816.68
7.2.30.0130.00716.90
7.2.20.0040.00816.71
7.2.10.0060.00617.13
7.2.00.0070.00918.18
7.1.250.0030.00915.70
7.1.200.0090.00315.71
7.1.100.0000.01017.95
7.1.70.0000.01017.15
7.1.60.0090.00919.40
7.1.50.0090.00917.00
7.1.00.0100.06722.49
7.0.200.0040.01216.50
7.0.140.0070.06722.08
7.0.70.0000.08021.76
7.0.60.0030.04321.79
7.0.50.0030.07721.96
7.0.40.0070.06320.04
7.0.30.0170.07320.01
7.0.20.0030.08720.04
7.0.10.0000.08020.07
7.0.00.0000.07720.16
5.6.280.0000.07321.13
5.6.220.0030.05020.71
5.6.210.0030.08320.57
5.6.200.0100.08020.97
5.6.190.0000.08720.95
5.6.180.0000.05721.09
5.6.170.0100.04720.92
5.6.160.0070.06321.07
5.6.150.0100.05721.00
5.6.140.0070.08321.17
5.6.130.0100.07021.04
5.6.120.0030.06721.04
5.6.110.0070.04720.94
5.6.100.0100.07720.98
5.6.90.0100.07720.98
5.6.80.0030.08720.33
5.6.70.0130.07320.42
5.6.60.0130.04020.47
5.6.50.0070.06320.47
5.6.40.0000.08320.27
5.6.30.0100.06320.43
5.6.20.0030.08020.38
5.6.10.0070.05720.38
5.6.00.0030.06720.38
5.5.360.0070.06020.45
5.5.350.0200.07720.43
5.5.340.0100.08320.81
5.5.330.0000.07720.81
5.5.320.0030.06320.91
5.5.310.0000.08020.82
5.5.300.0070.04720.65
5.5.290.0030.06020.88
5.5.280.0070.08720.90
5.5.270.0070.08320.73
5.5.260.0030.08020.75
5.5.250.0030.05020.69
5.5.240.0170.05320.23
5.5.230.0000.08720.09
5.5.220.0000.08320.15
5.5.210.0000.08320.20
5.5.200.0170.05320.23
5.5.190.0000.06720.09
5.5.180.0100.06320.04
5.5.160.0070.08020.12
5.5.150.0000.05320.16
5.5.140.0070.05320.25
5.5.130.0000.08020.25
5.5.120.0070.07320.11
5.5.110.0070.05320.19
5.5.100.0070.04320.18
5.5.90.0100.06720.16
5.5.80.0000.06020.08
5.5.70.0000.07020.04
5.5.60.0030.07720.10
5.5.50.0030.07320.15
5.5.40.0100.07720.12
5.5.30.0000.06320.14
5.5.20.0030.04720.14
5.5.10.0070.07320.01
5.5.00.0030.07720.09
5.4.450.0030.04719.46
5.4.440.0000.08319.46
5.4.430.0000.07319.16
5.4.420.0030.08319.35
5.4.410.0070.06719.10
5.4.400.0030.07719.16
5.4.390.0070.05719.09
5.4.380.0000.05319.14
5.4.370.0030.07319.08
5.4.360.0000.07019.09
5.4.350.0070.07718.94
5.4.340.0000.08019.02
5.4.320.0000.07019.12
5.4.310.0030.05019.12
5.4.300.0070.05718.90
5.4.290.0100.04319.20
5.4.280.0000.08719.16
5.4.270.0100.06719.02
5.4.260.0100.03319.04
5.4.250.0030.03719.12
5.4.240.0000.08319.19
5.4.230.0000.08719.15
5.4.220.0030.07319.12
5.4.210.0070.05018.94
5.4.200.0000.06318.87
5.4.190.0100.07319.08
5.4.180.0070.07718.88
5.4.170.0070.07718.93
5.4.160.0070.07019.02
5.4.150.0030.07319.23
5.4.140.0030.07316.53
5.4.130.0030.07316.47
5.4.120.0070.05716.54
5.4.110.0030.04316.40
5.4.100.0100.06316.49
5.4.90.0100.07016.54
5.4.80.0030.07016.47
5.4.70.0030.07316.39
5.4.60.0030.05316.30
5.4.50.0030.07016.31
5.4.40.0030.07716.42
5.4.30.0100.07016.39
5.4.20.0070.06016.45
5.4.10.0030.05316.36
5.4.00.0000.07715.91
5.3.290.0000.06314.73
5.3.280.0130.06714.64
5.3.270.0000.08314.59
5.3.260.0070.07714.59
5.3.250.0070.06014.67
5.3.240.0030.05014.75
5.3.230.0000.07314.63
5.3.220.0000.04714.53
5.3.210.0000.04014.64
5.3.200.0070.07314.51
5.3.190.0030.07314.55
5.3.180.0030.05714.50
5.3.170.0030.07314.68
5.3.160.0070.03314.61
5.3.150.0000.07714.50
5.3.140.0030.05314.69
5.3.130.0030.05314.52
5.3.120.0000.08314.57
5.3.110.0100.07314.68
5.3.100.0030.07714.05
5.3.90.0000.05714.08
5.3.80.0070.05714.12
5.3.70.0030.07314.04
5.3.60.0070.05314.03
5.3.50.0030.06314.02
5.3.40.0030.04314.05
5.3.30.0030.07313.98
5.3.20.0070.07313.75
5.3.10.0000.06313.73
5.3.00.0070.06713.67
5.2.170.0070.04312.37
5.2.160.0030.06012.37
5.2.150.0070.02712.37
5.2.140.0030.06712.37
5.2.130.0030.06312.37
5.2.120.0000.06312.37
5.2.110.0000.06312.37
5.2.100.0070.06012.37
5.2.90.0030.06012.37
5.2.80.0070.05712.37
5.2.70.0100.05712.37
5.2.60.0030.06012.37
5.2.50.0030.06712.37
5.2.40.0000.06012.37
5.2.30.0030.04712.37
5.2.20.0000.05312.37
5.2.10.0000.06012.37
5.2.00.0030.06312.37
5.1.60.0000.03712.37
5.1.50.0030.05312.37
5.1.40.0000.05712.37
5.1.30.0070.05712.37
5.1.20.0030.06012.37
5.1.10.0000.04712.37
5.1.00.0070.04712.37
5.0.50.0000.03712.37
5.0.40.0030.04312.37
5.0.30.0000.04012.37
5.0.20.0000.04012.37
5.0.10.0100.02312.37
5.0.00.0070.06312.37
4.4.90.0070.03012.37
4.4.80.0000.03712.37
4.4.70.0000.04012.37
4.4.60.0070.03312.37
4.4.50.0000.03312.37
4.4.40.0030.05312.37
4.4.30.0030.03312.37
4.4.20.0030.03012.37
4.4.10.0070.03012.37
4.4.00.0000.05312.37
4.3.110.0030.02312.37
4.3.100.0000.03712.37
4.3.90.0000.03312.37
4.3.80.0000.03312.37
4.3.70.0000.03312.37
4.3.60.0030.03012.37
4.3.50.0000.03712.37
4.3.40.0000.05312.37
4.3.30.0000.03312.37
4.3.20.0000.03312.37
4.3.10.0100.01012.37
4.3.00.0030.01312.37

preferences:
48.06 ms | 401 KiB | 5 Q