3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test implements JsonSerializable { private $name = 'Mike Jones'; public function jsonSerialize() { return [ 'name' => $this->name]; 'fooo' => ['year' => 2003, 'type' => 'single'] } } var_dump(json_encode(new Test()));

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)
7.0.20.0300.05320.30
7.0.10.0030.04720.19
7.0.00.0100.08320.25
5.6.170.0130.05720.55
5.6.160.0000.05720.46
5.6.150.0070.07718.16
5.6.140.0030.04318.17
5.6.130.0070.08318.15
5.6.120.0100.04021.14
5.6.110.0000.06721.12
5.6.100.0170.07320.98
5.6.90.0070.07321.12
5.6.80.0070.07720.51
5.5.310.0500.06320.36
5.5.300.0170.05718.07
5.5.290.0170.07017.95
5.5.280.0100.07320.65
5.5.270.0070.08320.78
5.5.260.0070.03720.84
5.5.250.0130.08720.71
5.5.240.0230.08020.19

preferences:
140.6 ms | 1394 KiB | 7 Q