3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Foo { private $orig; public function bar() { $this->orig = clone $this; } } $foo = new Foo; for ($i = 0; $i < 20; $i++) { $foo->bar(); echo (memory_get_peak_usage(true) / 1024 / 1024) . "\n"; }
based on H9M1Z
Output for 7.0.0 - 7.1.0
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Output for hhvm-3.12.0
0.29239654541016 0.29255676269531 0.29259490966797 0.29263305664062 0.29267120361328 0.29270935058594 0.29274749755859 0.29278564453125 0.29282379150391 0.29286193847656 0.29290008544922 0.29293823242188 0.29297637939453 0.29301452636719 0.29305267333984 0.2930908203125 0.29312896728516 0.29316711425781 0.29320526123047 0.29324340820312
Output for hhvm-3.10.0
0.29084777832031 0.29100799560547 0.29104614257812 0.29108428955078 0.29112243652344 0.29116058349609 0.29119873046875 0.29123687744141 0.29127502441406 0.29131317138672 0.29135131835938 0.29138946533203 0.29142761230469 0.29146575927734 0.29150390625 0.29154205322266 0.29158020019531 0.29161834716797 0.29165649414062 0.29169464111328
Output for 5.2.1 - 5.2.17, 5.4.0 - 5.6.28
0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25
Output for 5.3.0 - 5.3.29
0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75
Output for 5.0.0 - 5.2.0
Fatal error: Call to undefined function memory_get_peak_usage() in /in/7PRN5 on line 14
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/7PRN5 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/7PRN5 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/7PRN5 on line 4
Process exited with code 255.