3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(E_ALL|E_STRICT); class Obj { // Testing $this->a being a dynamic property. function __construct($a) { $this->a = $a; } public function __wakeup() { $this->a = 42; for ($i = 0; $i < 10000; $i++) { $this->{'b' . $i} = 42; } } } function main() { $obj = (object)["test" => 'foo']; // array (not a reference, but should be copied on write) $a = new Obj($obj); $b = new Obj($obj); $variable = [$a, $b]; $serialized = serialize($variable); printf("%s\n", $serialized); $unserialized = unserialize($serialized); echo "Called __unserialize\n"; for ($i = 0; $i < 10000; $i++) { if ($unserialized[0]->{'b' . $i} !== 42) { echo "Fail 0 b$i\n"; return; } if ($unserialized[1]->{'b' . $i} !== 42) { echo "Fail 1 b$i\n"; return; } unset($unserialized[0]->{'b' . $i}); unset($unserialized[1]->{'b' . $i}); } var_dump($unserialized); } main();

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)
8.3.60.0180.01516.75
8.3.50.0080.01021.97
8.3.40.0280.01218.98
8.3.30.0170.00918.83
8.3.20.0140.00720.38
8.3.10.0090.00321.98
8.3.00.0040.00719.45
8.2.180.0100.01017.00
8.2.170.0030.01322.96
8.2.160.0060.00919.32
8.2.150.0090.00024.18
8.2.140.0160.01124.66
8.2.130.0000.00826.16
8.2.120.0080.00020.93
8.2.110.0110.00021.04
8.2.100.0050.01018.47
8.2.90.0050.00519.30
8.2.80.0060.00317.97
8.2.70.0040.00417.63
8.2.60.0030.00618.05
8.2.50.0060.00618.10
8.2.40.0080.00020.55
8.2.30.0040.00419.46
8.2.20.0070.00717.89
8.2.10.0030.00618.30
8.2.00.0040.00418.14
8.1.280.0040.01825.92
8.1.270.0030.00926.10
8.1.260.0090.00326.35
8.1.250.0030.00928.09
8.1.240.0040.01123.39
8.1.230.0100.00721.68
8.1.220.0080.00619.66
8.1.210.0060.00919.36
8.1.200.0030.01919.36
8.1.190.0040.01119.23
8.1.180.0000.01419.23
8.1.170.0040.01120.49
8.1.160.0030.00924.06
8.1.150.0030.01021.20
8.1.140.0070.00721.60
8.1.130.0000.01419.77
8.1.120.0000.01719.45
8.1.110.0030.01019.49
8.1.100.0070.00719.48
8.1.90.0000.01519.42
8.1.80.0070.00719.56
8.1.70.0100.00619.52
8.1.60.0000.01519.67
8.1.50.0090.00619.57
8.1.40.0000.01519.61
8.1.30.0040.01119.54
8.1.20.0040.01119.68
8.1.10.0000.01419.64
8.1.00.0030.01219.59
8.0.300.0030.01418.77
8.0.290.0000.01418.50
8.0.280.0030.01020.40
8.0.270.0000.01419.17
8.0.260.0060.00619.14
8.0.250.0030.01018.91
8.0.240.0040.01118.85
8.0.230.0070.00718.97
8.0.220.0030.01018.80
8.0.210.0000.01218.80
8.0.200.0040.00818.90
8.0.190.0040.01118.76
8.0.180.0100.01018.84
8.0.170.0100.01318.91
8.0.160.0000.01418.85
8.0.150.0040.01118.86
8.0.140.0070.01118.79
8.0.130.0030.01015.33
8.0.120.0030.01218.88
8.0.110.0060.00918.72
8.0.100.0110.00318.69
8.0.90.0030.01018.81
8.0.80.0030.02518.77
8.0.70.0040.01118.67
8.0.60.0040.01118.69
8.0.50.0040.01118.72
8.0.30.0100.01619.09
8.0.20.0140.02019.18
8.0.10.0030.01219.01
8.0.00.0070.02518.84
7.4.330.0030.00915.60
7.4.320.0030.00918.53
7.4.300.0070.00718.36
7.4.290.0030.01018.41
7.4.280.0060.00918.46
7.4.270.0000.01318.30
7.4.260.0090.00618.41
7.4.250.0060.00918.35
7.4.240.0030.01018.39
7.4.230.0000.01418.34
7.4.220.0070.02618.39
7.4.210.0090.01918.50
7.4.200.0000.01418.55
7.4.160.0130.01318.26
7.4.150.0130.01918.57
7.4.140.0110.02818.39
7.4.130.0100.01918.32
7.4.120.0110.01718.46
7.4.110.0030.02518.53
7.4.100.0080.01918.23
7.4.90.0130.01618.37
7.4.80.0110.02919.39
7.4.70.0150.02518.63
7.4.60.0070.02018.36
7.4.50.0130.01618.44
7.4.40.0070.02118.50
7.4.30.0100.01918.55
7.4.00.0030.02316.92
7.3.330.0040.01115.17
7.3.320.0060.00615.35
7.3.310.0000.01418.24
7.3.300.0000.01418.17
7.3.290.0210.02218.27
7.3.280.0110.02018.19
7.3.270.0090.01918.59
7.3.260.0090.01918.46
7.3.250.0140.02018.25
7.3.240.0110.01818.48
7.3.230.0100.02818.28
7.3.210.0100.01718.48
7.3.200.0030.02418.23
7.3.190.0100.02018.45
7.3.180.0110.02118.48
7.3.170.0150.01218.36
7.3.160.0090.01918.39
7.3.120.0090.01616.91
7.3.110.0090.01216.81
7.3.100.0040.01916.84
7.3.90.0100.01716.85
7.3.80.0030.01916.68
7.3.70.0070.02116.84
7.3.60.0060.01216.83
7.3.50.0070.01016.80
7.3.40.0100.01616.31
7.3.30.0030.02116.79
7.3.20.0040.02518.48
7.3.10.0050.01618.64
7.3.00.0070.01418.65
7.2.330.0180.01218.18
7.2.320.0100.02018.41
7.2.310.0030.02618.20
7.2.300.0100.01918.38
7.2.290.0110.01618.39
7.2.240.0000.02016.73
7.2.230.0000.01916.64
7.2.220.0030.01916.65
7.2.210.0080.01516.89
7.2.200.0030.02416.71
7.2.190.0070.01716.76
7.2.180.0110.01416.52
7.2.170.0070.01816.66
7.2.160.0130.01316.73
7.2.150.0070.01818.68
7.2.140.0030.01718.97
7.2.130.0100.01318.90
7.2.120.0030.02018.91
7.2.110.0120.01318.76
7.2.100.0010.02218.81
7.2.90.0090.01818.90
7.2.80.0060.01418.89
7.2.70.0070.01518.94
7.2.60.0050.01618.83
7.2.50.0080.01918.99
7.2.40.0060.01818.92
7.2.30.0070.01618.91
7.2.20.0060.01818.81
7.2.10.0080.01518.79
7.2.00.0060.02219.38
7.1.330.0100.01617.91
7.1.320.0060.01917.88
7.1.310.0030.02517.80
7.1.300.0030.02417.63
7.1.290.0030.01817.49
7.1.280.0100.01917.79
7.1.270.0460.01017.82
7.1.260.0190.02217.80
7.1.250.0070.02017.79
7.1.200.0100.01017.84
7.1.100.0030.02119.92
7.1.70.0070.00719.16
7.1.60.0030.01319.45
7.1.50.0100.02418.99
7.1.00.0070.07722.44
7.0.200.0000.01718.84
7.0.80.0500.06020.82
7.0.70.0570.06321.12
7.0.60.0530.06320.91
7.0.50.0530.06021.27
7.0.40.0030.07021.27
7.0.30.0530.06021.32
7.0.20.0970.08021.97
7.0.10.0500.07021.92
7.0.00.0930.06722.05
5.6.230.0170.07323.40
5.6.220.0030.08723.45
5.6.210.0200.07723.44
5.6.200.0130.08023.97
5.6.190.0100.08323.93
5.6.180.0130.07724.01
5.6.170.0070.08323.92
5.6.160.0100.08023.91
5.6.150.0270.07023.93
5.6.140.0100.08323.89
5.6.130.0130.08023.91
5.6.120.0070.09023.86
5.6.110.0130.08023.89
5.6.100.0130.07723.85
5.6.90.0130.08023.90
5.6.80.0130.07723.32
5.6.70.0170.07323.29
5.6.60.0230.05721.99
5.6.50.0200.05321.94
5.6.40.0070.06321.99
5.6.30.0230.06322.07
5.6.20.0270.05021.98
5.6.10.0030.06722.05
5.6.00.0100.06721.95

preferences:
71.14 ms | 401 KiB | 5 Q