3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "foobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisoutfoobarbizbazbuztestingthisout"; echo memory_get_usage() . "\n"; $c = mb_substr($a, 0, strlen($a) - 1); echo memory_get_usage() . "\n";
Output for 7.0.0 - 7.1.0
347008 347936
Output for 5.5.0 - 5.6.28
217168 218248
Output for 5.4.10 - 5.4.45
217688 218768
Output for 5.4.0 - 5.4.9
217160 218240
Output for 5.3.11 - 5.3.29
622104 623176
Output for 5.3.0 - 5.3.10
621800 622872
Output for 5.2.10 - 5.2.17
79736 80800
Output for 5.2.7 - 5.2.9
80168 81240
Output for 5.2.3 - 5.2.6
80488 81560
Output for 5.2.1 - 5.2.2
78384 79456
Output for 5.0.0 - 5.2.0
Fatal error: Call to undefined function memory_get_usage() in /in/cUBXe on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: memory_get_usage() in /in/cUBXe on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: memory_get_usage() in /in/cUBXe on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: memory_get_usage() in /in/cUBXe on line 4