3v4l.org

run code in 300+ PHP versions simultaneously
<?php <?php trait Singleton { protected static $instance; final public static function getInstance() { if (!isset(static::$instance)) { static::$instance = new static; } return static::$instance; } } class a1{ use Singleton; } class a2{ use Singleton; } $a = a1::getInstance(); $b = a2::getInstance(); var_dump($a,$b);

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)
5.4.340.0090.03212.01
5.4.320.0070.03612.50
5.4.310.0050.04012.50
5.4.300.0100.03712.50
5.4.290.0050.04012.49
5.4.280.0070.03412.39
5.4.270.0070.04412.39
5.4.260.0060.03812.39
5.4.250.0100.04212.39
5.4.240.0050.03612.39
5.4.230.0040.03812.38
5.4.220.0050.03712.38
5.4.210.0030.03712.38
5.4.200.0040.03812.38
5.4.190.0050.04212.38
5.4.180.0040.03812.38
5.4.170.0080.03412.39
5.4.160.0080.03312.38
5.4.150.0050.03612.38
5.4.140.0080.03412.07
5.4.130.0080.03212.05
5.4.120.0110.03212.02
5.4.110.0070.03312.01
5.4.100.0070.03512.01
5.4.90.0040.03812.01
5.4.80.0030.04512.01
5.4.70.0090.04212.01
5.4.60.0060.03712.00
5.4.50.0050.03612.01
5.4.40.0060.03512.00
5.4.30.0060.03511.99
5.4.20.0060.03711.99
5.4.10.0060.03311.99
5.4.00.0070.04511.48
5.3.290.0070.04612.80
5.3.280.0050.04112.71
5.3.270.0060.04312.73
5.3.260.0050.04012.72
5.3.250.0030.04012.71
5.3.240.0110.04312.72
5.3.230.0100.04112.71
5.3.220.0090.04912.68
5.3.210.0060.03912.68
5.3.200.0080.03412.68
5.3.190.0080.03612.68
5.3.180.0060.03612.67
5.3.170.0080.03512.67
5.3.160.0100.03812.67
5.3.150.0050.03912.67
5.3.140.0080.03412.66
5.3.130.0070.04012.65
5.3.120.0060.03812.66
5.3.110.0080.03712.66
5.3.100.0060.03612.12
5.3.90.0060.03512.09
5.3.80.0090.03412.07
5.3.70.0080.03512.08
5.3.60.0060.03612.06
5.3.50.0050.03712.00
5.3.40.0060.03712.00
5.3.30.0030.03811.95
5.3.20.0070.03411.73
5.3.10.0070.03211.70
5.3.00.0030.03811.68
5.2.170.0070.0279.18
5.2.160.0050.0339.18
5.2.150.0030.0369.18
5.2.140.0070.0279.18
5.2.130.0050.0349.14
5.2.120.0050.0279.14
5.2.110.0080.0299.15
5.2.100.0040.0369.14
5.2.90.0050.0299.14
5.2.80.0060.0289.14
5.2.70.0040.0309.14
5.2.60.0030.0339.09
5.2.50.0040.0319.06
5.2.40.0040.0309.04
5.2.30.0050.0309.01
5.2.20.0060.0289.00
5.2.10.0040.0308.93
5.2.00.0040.0318.79
5.1.60.0040.0258.07
5.1.50.0040.0278.06
5.1.40.0030.0278.05
5.1.30.0040.0298.40
5.1.20.0040.0288.42
5.1.10.0050.0348.14
5.1.00.0050.0318.14
5.0.50.0030.0216.63
5.0.40.0040.0196.48
5.0.30.0060.0346.29
5.0.20.0040.0216.26
5.0.10.0030.0226.24
5.0.00.0040.0306.23
4.4.90.0040.0154.77
4.4.80.0040.0144.75
4.4.70.0020.0164.75
4.4.60.0050.0134.75
4.4.50.0030.0144.77
4.4.40.0030.0254.71
4.4.30.0050.0174.76
4.4.20.0010.0164.84
4.4.10.0040.0194.84
4.4.00.0030.0254.76
4.3.110.0030.0204.67
4.3.100.0040.0134.67
4.3.90.0040.0204.64
4.3.80.0040.0234.58
4.3.70.0020.0174.63
4.3.60.0030.0144.63
4.3.50.0030.0164.62
4.3.40.0050.0344.54
4.3.30.0030.0203.28
4.3.20.0060.0163.26
4.3.10.0000.0173.22
4.3.00.0130.01010.38

preferences:
139.6 ms | 1394 KiB | 7 Q