3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php foreach(array('day', 'month', 'year') as $dobPart) { $prefix = substr($dobPart,0,1); $prefix = str_repeat($prefix,1); var_dump(strtoupper($prefix)); }
Output for 4.3.0 - 7.2.0
string(1) "D" string(1) "M" string(1) "Y"