3v4l.org

run code in 300+ PHP versions simultaneously
<?php class MemUsage{ protected $s = null; public function start(){ $this->s = memory_get_usage(); } public function get(){ return memory_get_usage()-$this->s; } } class X{ protected $v = null; public function __construct(){ $this->v = str_repeat("a", 1024*100); } } $memUsage = new MemUsage(); $memUsage->start(); $x1 = new X(); echo $memUsage->get()."\n"; //$memUsage->start(); $x2 = new X(); echo $memUsage->get()."\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).

VersionSystem time (s)User time (s)Memory (MiB)
7.1.70.0000.00816.86
7.1.60.0040.00817.22
7.1.50.0130.01334.47
7.1.40.0170.01334.15
7.1.30.0170.01334.31
7.1.20.0100.01734.29
7.1.10.0070.00716.30
7.1.00.0030.01316.59
7.0.200.0020.00516.50
7.0.190.0030.01016.35
7.0.180.0030.01016.20
7.0.170.0030.01015.95
7.0.160.0000.01015.97
7.0.150.0030.01016.34
7.0.140.0030.01016.18
7.0.130.0030.01016.41
7.0.120.0000.01316.31
7.0.110.0000.01316.12
7.0.100.0000.01716.02
7.0.90.0030.01016.31
7.0.80.0070.00716.17
7.0.70.0070.00716.34
7.0.60.0030.01016.04
7.0.50.0170.00016.14
7.0.40.0000.01716.31
7.0.30.0030.01016.30
7.0.20.0000.01316.40
7.0.10.0030.01316.19
7.0.00.0070.00716.24

preferences:
37.31 ms | 400 KiB | 5 Q