3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class c1 { public $a = 1; public $b = 2; } class c2 implements Serializable { public function serialize() { return 's:1:"a";i:1;s:1:"b";i:2;'; } public function unserialize($str) {} } $o1 = new c1; $o2 = new c2; echo serialize($o1) . "\n"; echo serialize($o2) . "\n";

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).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)
7.3.0rc40.0230.01398.97
7.3.0rc30.0810.00316.43
7.3.0beta10.0060.00312.79
7.3.0alpha10.0050.00512.81
7.2.60.0040.00716.91
7.1.200.0130.00515.59
7.1.70.0100.00017.06
7.1.60.0140.01119.40
7.1.50.0100.01416.92
7.1.00.0030.03322.40
7.0.200.0030.00316.88
7.0.140.0030.07322.07
7.0.70.0000.09321.67
7.0.60.0030.07721.77
7.0.50.0100.08322.04
7.0.40.0070.07320.09
7.0.30.0000.09320.13
7.0.20.0070.07720.09
7.0.10.0130.06320.12
7.0.00.0030.08320.04
5.6.280.0030.07321.02
5.6.220.0070.07320.58
5.6.210.0130.07020.67
5.6.200.0000.06721.00
5.6.190.0030.07721.08
5.6.180.0130.07321.04
5.6.170.0070.07720.92
5.6.160.0030.07021.14
5.6.150.0070.07720.95
5.6.140.0070.08021.00
5.6.130.0070.08021.13
5.6.120.0070.08721.10
5.6.110.0030.08721.07
5.6.100.0030.08021.00
5.6.90.0030.08720.92
5.6.80.0030.08320.46
5.6.70.0130.07320.42
5.6.60.0170.07720.42
5.6.50.0130.07320.34
5.6.40.0000.07720.29
5.6.30.0100.05720.46
5.6.20.0070.07720.46
5.6.10.0100.06720.39
5.6.00.0130.07020.36
5.5.360.0100.08320.41
5.5.350.0000.08720.45
5.5.340.0030.05020.90
5.5.330.0070.06720.93
5.5.320.0100.07720.80
5.5.310.0100.07320.77
5.5.300.0000.08320.93
5.5.290.0030.08320.79
5.5.280.0130.07320.80
5.5.270.0130.06020.92
5.5.260.0030.08320.83
5.5.250.0030.08720.73
5.5.240.0130.07320.11
5.5.230.0100.07720.25
5.5.220.0100.07320.11
5.5.210.0170.07720.27
5.5.200.0030.08020.24
5.5.190.0030.08320.09
5.5.180.0130.06720.21
5.5.160.0100.07020.29
5.5.150.0030.07720.24
5.5.140.0030.06720.19
5.5.130.0030.05020.11
5.5.120.0030.07020.14
5.5.110.0100.04320.21
5.5.100.0070.06020.02
5.5.90.0100.05020.16
5.5.80.0030.07720.15
5.5.70.0070.07320.15
5.5.60.0030.07720.10
5.5.50.0070.07320.16
5.5.40.0000.07719.96
5.5.30.0030.07019.90
5.5.20.0100.07719.92
5.5.10.0030.08320.13
5.5.00.0030.07320.03
5.4.450.0030.08019.28
5.4.440.0100.08019.45
5.4.430.0000.08719.44
5.4.420.0000.04319.41
5.4.410.0070.03319.14
5.4.400.0170.06319.05
5.4.390.0070.07019.03
5.4.380.0070.07718.88
5.4.370.0000.08019.20
5.4.360.0070.07718.90
5.4.350.0100.07318.88
5.4.340.0030.08019.16
5.4.320.0000.08018.88
5.4.310.0070.07019.23
5.4.300.0130.06719.23
5.4.290.0100.06718.95
5.4.280.0030.08019.12
5.4.270.0000.07319.02
5.4.260.0030.07719.09
5.4.250.0000.07318.84
5.4.240.0070.05718.95
5.4.230.0070.06719.04
5.4.220.0070.07319.04
5.4.210.0100.07018.87
5.4.200.0100.06718.84
5.4.190.0130.04318.86
5.4.180.0070.07718.84
5.4.170.0030.07319.12
5.4.160.0000.08019.10
5.4.150.0070.06719.07
5.4.140.0100.07016.32
5.4.130.0000.07316.30
5.4.120.0000.07016.39
5.4.110.0070.07316.38
5.4.100.0130.06316.43
5.4.90.0070.06016.43
5.4.80.0100.06716.45
5.4.70.0000.07016.42
5.4.60.0100.06316.32
5.4.50.0000.05716.34
5.4.40.0000.06716.51
5.4.30.0000.05016.24
5.4.20.0070.03016.47
5.4.10.0030.04716.43
5.4.00.0000.04015.89
5.3.290.0000.08014.56
5.3.280.0000.07014.66
5.3.270.0030.07314.68
5.3.260.0030.08014.66
5.3.250.0030.07714.75
5.3.240.0000.07714.51
5.3.230.0030.07714.72
5.3.220.0070.07714.55
5.3.210.0070.06314.52
5.3.200.0070.06714.54
5.3.190.0030.06714.63
5.3.180.0030.05314.63
5.3.170.0030.08014.50
5.3.160.0030.07014.68
5.3.150.0030.07714.71
5.3.140.0070.04314.66
5.3.130.0130.07314.49
5.3.120.0070.04714.52
5.3.110.0000.05314.64
5.3.100.0030.05714.01
5.3.90.0000.03714.13
5.3.80.0000.03714.15
5.3.70.0000.03714.01
5.3.60.0030.03714.02
5.3.50.0070.03013.98
5.3.40.0070.03013.88
5.3.30.0030.03014.00
5.3.20.0000.03313.71
5.3.10.0000.03013.71
5.3.00.0070.03013.76
5.2.170.0000.03011.06
5.2.160.0000.03011.15
5.2.150.0030.02711.21
5.2.140.0030.02711.14
5.2.130.0000.03011.21
5.2.120.0000.02711.22
5.2.110.0030.02711.21
5.2.100.0030.03011.17
5.2.90.0000.02310.97
5.2.80.0000.02311.21
5.2.70.0070.02011.04
5.2.60.0030.02710.95
5.2.50.0030.03311.12
5.2.40.0000.02310.93
5.2.30.0000.03011.07
5.2.20.0030.02011.07
5.2.10.0000.02710.88
5.2.00.0000.04010.59
5.1.60.0030.02310.27
5.1.50.0030.02010.27
5.1.40.0030.02010.27
5.1.30.0000.02710.34
5.1.20.0030.01710.45
5.1.10.0030.02310.27
5.1.00.0030.02010.27
5.0.50.0030.02010.27
5.0.40.0030.01710.27
5.0.30.0030.02310.27
5.0.20.0000.02010.27
5.0.10.0030.01310.27
5.0.00.0000.02710.27
4.4.90.0000.01310.27
4.4.80.0000.01310.27
4.4.70.0030.01310.27
4.4.60.0030.01010.27
4.4.50.0030.01010.27
4.4.40.0000.02010.27
4.4.30.0000.01310.27
4.4.20.0000.01310.27
4.4.10.0000.01710.27
4.4.00.0000.02310.27
4.3.110.0030.01310.27
4.3.100.0000.01310.27
4.3.90.0000.01310.27
4.3.80.0000.02010.27
4.3.70.0000.01310.27
4.3.60.0000.01310.27
4.3.50.0030.01710.27
4.3.40.0000.02010.27
4.3.30.0030.01010.27
4.3.20.0000.01310.27
4.3.10.0000.01310.27
4.3.00.0030.01010.27