3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(); $a[1] = 'toto'; $m = memory_get_usage(); $a[2] = 'titi'; $a[1000000] = 'tata'; echo memory_get_usage() - $m;
Output for 7.0.0 - 7.1.0
0
Output for 5.4.0 - 5.6.21
432
Output for 5.3.0 - 5.3.29
480
Output for 5.2.1 - 5.2.2, 5.2.10 - 5.2.17
456
Output for 5.2.3 - 5.2.9
424
Output for 5.0.0 - 5.2.0
<br /> <b>Fatal error</b>: Call to undefined function memory_get_usage() in <b>/in/a14iV</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.4.5 - 4.4.9
<br /> <b>Fatal error</b>: Call to undefined function: memory_get_usage() in <b>/in/a14iV</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.4.4
<br /> <b>Fatal error</b>: Call to undefined function: memory_get_usage() in <b>/in/a14iV</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1
<br /> <b>Fatal error</b>: Call to undefined function: memory_get_usage() in <b>/in/a14iV</b> on line <b>4</b><br />