3v4l.org

run code in 300+ PHP versions simultaneously
<?php class X { private $i = 'foo'; } class Y extends X { public $a, $b = 2; protected $c, $d = 'd'; private $e, $i = 'bar'; } echo $s = serialize(new Y); var_dump(unserialize($s);

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)
5.4.320.0070.03512.51
5.4.310.0070.04012.52
5.4.300.0090.03512.52
5.4.290.0100.04312.50
5.4.280.0070.03712.41
5.4.270.0080.04012.40
5.4.260.0070.04112.40
5.4.250.0090.03512.41
5.4.240.0080.03412.40
5.4.230.0040.04012.39
5.4.220.0060.03812.40
5.4.210.0050.03712.40
5.4.200.0080.03512.40
5.4.190.0050.03612.39
5.4.180.0060.03912.39
5.4.170.0080.03312.40
5.4.160.0080.03912.39
5.4.150.0060.04012.39
5.4.140.0070.04212.09
5.4.130.0040.03812.07
5.4.120.0060.04012.03
5.4.110.0100.03712.03
5.4.100.0060.04012.02
5.4.90.0080.03812.03
5.4.80.0050.04112.03
5.4.70.0070.03912.02
5.4.60.0040.04512.02
5.4.50.0040.03612.02
5.4.40.0060.04412.01
5.4.30.0080.04012.01
5.4.20.0060.03712.00
5.4.10.0080.03812.01
5.4.00.0050.04011.50
5.3.290.0070.04912.80
5.3.280.0070.04012.70
5.3.270.0050.04912.73
5.3.260.0060.03812.72
5.3.250.0070.03712.72
5.3.240.0110.03712.72
5.3.230.0100.03712.71
5.3.220.0050.04612.68
5.3.210.0130.03712.68
5.3.200.0050.04512.68
5.3.190.0050.04312.68
5.3.180.0050.04012.67
5.3.170.0070.03812.67
5.3.160.0110.04912.68
5.3.150.0100.04012.67
5.3.140.0060.04212.66
5.3.130.0100.04212.66
5.3.120.0080.04012.66
5.3.110.0030.04312.66
5.3.100.0090.03612.12
5.3.90.0070.04112.10
5.3.80.0070.04312.10
5.3.70.0100.03912.09
5.3.60.0100.03612.08
5.3.50.0110.03412.03
5.3.40.0080.04412.03
5.3.30.0100.03611.98
5.3.20.0090.04111.76
5.3.10.0050.04211.73
5.3.00.0050.04111.72
5.2.170.0060.0339.22
5.2.160.0080.0339.22
5.2.150.0030.0419.22
5.2.140.0050.0329.22
5.2.130.0070.0329.18
5.2.120.0050.0309.18
5.2.110.0080.0319.19
5.2.100.0060.0279.18
5.2.90.0050.0399.18
5.2.80.0070.0319.17
5.2.70.0070.0359.18
5.2.60.0040.0439.13
5.2.50.0060.0439.10
5.2.40.0070.0309.07
5.2.30.0060.0299.05
5.2.20.0060.0349.04
5.2.10.0070.0338.94
5.2.00.0010.0318.80
5.1.60.0070.0328.09
5.1.50.0060.0248.09
5.1.40.0060.0318.07
5.1.30.0030.0408.42
5.1.20.0050.0278.44
5.1.10.0070.0238.16
5.1.00.0070.0228.16
5.0.50.0030.0216.64
5.0.40.0010.0216.51
5.0.30.0030.0316.32
5.0.20.0040.0196.28
5.0.10.0040.0196.26
5.0.00.0040.0326.25
4.4.90.0020.0244.78
4.4.80.0030.0204.76
4.4.70.0060.0164.76
4.4.60.0030.0244.75
4.4.50.0030.0164.77
4.4.40.0030.0314.71
4.4.30.0050.0134.76
4.4.20.0050.0204.84
4.4.10.0020.0214.85
4.4.00.0020.0354.76
4.3.110.0040.0144.67
4.3.100.0040.0184.66
4.3.90.0070.0174.63
4.3.80.0030.0354.58
4.3.70.0070.0194.63
4.3.60.0020.0204.62
4.3.50.0020.0214.62
4.3.40.0010.0274.54
4.3.30.0040.0143.30
4.3.20.0010.0193.28
4.3.10.0030.0163.24
4.3.00.0030.01714.87

preferences:
158.65 ms | 1398 KiB | 7 Q