3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i=0; $i<10; $i++) { $a = range(1, 10000); echo memory_get_usage(true) . PHP_EOL; $a = null; }
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1
2097152 2097152 2097152 2097152 2097152 2097152 2097152 2097152 2097152 2097152
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
1835008 1835008 1835008 1835008 1835008 1835008 1835008 1835008 1835008 1835008
Output for 5.3.0 - 5.3.29
2359296 2359296 2359296 2359296 2359296 2359296 2359296 2359296 2359296 2359296
Output for 5.2.1 - 5.2.17
1572864 1572864 1572864 1572864 1572864 1572864 1572864 1572864 1572864 1572864
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
Fatal error: Call to undefined function memory_get_usage() in /in/XPbh8 on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: memory_get_usage() in /in/XPbh8 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: memory_get_usage() in /in/XPbh8 on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: memory_get_usage() in /in/XPbh8 on line 5
preferences:
247.78 ms | 401 KiB | 325 Q