- ucwords: documentation ( source)
- strtoupper: documentation ( source)
- strtolower: documentation ( source)
- ucfirst: documentation ( source)
<?php
//all uppercase letters
print(strtoupper("the quick brown fox jumps over the lazy dog.<br>"));
//all lowercase letters
print(strtolower("THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG<br>"));
// make a string's first character uppercase
print(ucfirst("the quick brown fox jumps over the lazy dog.<br>"));
// make a string's first character of all the words uppercase
print(ucwords("the quick brown fox jumps over the lazy dog.<br>"));
?>