- ucwords: documentation ( source)
- strtoupper: documentation ( source)
- strtolower: documentation ( source)
- ucfirst: documentation ( source)
<?php
print(strtolower("NERSES SRAPIONYAN<br>"));
print(strtoupper("nerses srapionyan."));
print(ucfirst("nerses"));
print(ucwords("nerses srapionyan"));
?>