3v4l.org

run code in 300+ PHP versions simultaneously
<?php class C { private $x = 'x'; function __get($key) {return &$this->x;} function __isset($key) {return TRUE;} } $c = new C; print_r(empty($c->__get('k')));

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)
5.4.340.0090.04112.03
5.4.320.0080.03412.52
5.4.310.0060.03712.51
5.4.300.0080.03312.52
5.4.290.0050.03712.51
5.4.280.0080.03212.41
5.4.270.0120.04212.41
5.4.260.0040.04012.41
5.4.250.0120.04212.41
5.4.240.0090.03312.41
5.4.230.0080.03512.40
5.4.220.0080.03312.40
5.4.210.0090.03112.40
5.4.200.0050.03812.40
5.4.190.0090.03212.40
5.4.180.0040.03712.40
5.4.170.0040.03712.41
5.4.160.0090.03212.40
5.4.150.0050.03612.40
5.4.140.0090.03312.09
5.4.130.0030.03812.07
5.4.120.0050.03612.03
5.4.110.0070.03512.03
5.4.100.0040.03812.03
5.4.90.0060.03712.04
5.4.80.0060.03512.03
5.4.70.0070.03312.02
5.4.60.0080.03212.03
5.4.50.0090.03612.03
5.4.40.0100.03512.01
5.4.30.0070.03612.01
5.4.20.0100.02912.01
5.4.10.0070.03312.01
5.4.00.0100.03211.50
5.3.290.0080.03912.80
5.3.280.0070.03612.71
5.3.270.0070.03712.73
5.3.260.0070.04212.72
5.3.250.0090.03412.72
5.3.240.0050.03812.72
5.3.230.0090.03412.71
5.3.220.0030.03912.68
5.3.210.0070.03612.68
5.3.200.0080.03612.68
5.3.190.0110.03312.67
5.3.180.0120.03212.68
5.3.170.0070.03412.67
5.3.160.0080.03312.67
5.3.150.0060.04212.68
5.3.140.0090.04012.66
5.3.130.0080.04312.66
5.3.120.0070.03812.66
5.3.110.0070.03712.66
5.3.100.0050.03812.13
5.3.90.0060.04412.10
5.3.80.0060.03512.09
5.3.70.0030.03912.09
5.3.60.0050.03612.08
5.3.50.0080.03312.03
5.3.40.0080.03512.03
5.3.30.0070.03611.98
5.3.20.0050.03611.77
5.3.10.0040.03511.73
5.3.00.0050.03611.71
5.2.170.0060.0379.22
5.2.160.0040.0419.23
5.2.150.0080.0279.22
5.2.140.0060.0289.22
5.2.130.0020.0309.18
5.2.120.0010.0319.18
5.2.110.0090.0259.18
5.2.100.0060.0279.18
5.2.90.0060.0309.18
5.2.80.0080.0329.18
5.2.70.0040.0379.17
5.2.60.0060.0329.13
5.2.50.0050.0289.09
5.2.40.0040.0299.07
5.2.30.0070.0279.05
5.2.20.0050.0289.04
5.2.10.0000.0338.95
5.2.00.0070.0278.80
5.1.60.0050.0248.09
5.1.50.0040.0278.09
5.1.40.0060.0308.07
5.1.30.0050.0248.42
5.1.20.0100.0218.45
5.1.10.0050.0258.16
5.1.00.0090.0238.17
5.0.50.0040.0216.64
5.0.40.0020.0206.50
5.0.30.0040.0316.32
5.0.20.0060.0166.28
5.0.10.0030.0196.26
5.0.00.0100.0246.25
4.4.90.0040.0144.78
4.4.80.0040.0144.76
4.4.70.0040.0154.75
4.4.60.0010.0174.75
4.4.50.0000.0184.77
4.4.40.0040.0234.71
4.4.30.0040.0144.76
4.4.20.0030.0154.85
4.4.10.0030.0154.85
4.4.00.0010.0264.76
4.3.110.0050.0144.67
4.3.100.0010.0174.66
4.3.90.0020.0154.63
4.3.80.0010.0264.58
4.3.70.0030.0144.63
4.3.60.0030.0224.63
4.3.50.0040.0214.63
4.3.40.0040.0294.53
4.3.30.0040.0193.30
4.3.20.0020.0213.28
4.3.10.0040.0193.23
4.3.00.0100.0237.20

preferences:
135.78 ms | 1398 KiB | 7 Q