php ucfirst all words

1$foo = 'hello world!';
2$foo = ucwords($foo);             // Hello World!
3
4$bar = 'HELLO WORLD!';
5$bar = ucwords($bar);             // HELLO WORLD!
6$bar = ucwords(strtolower($bar)); // Hello World!
7
8//With custom delimiter
9$foo = 'hello|world!';
10$bar = ucwords($foo);             // Hello|world!
11
12$baz = ucwords($foo, "|"); 

1
2<?php
3$foo = 'hello world!';
4$foo = ucfirst($foo);             // Hello world!
5
6$bar = 'HELLO WORLD!';
7$bar = ucfirst($bar);             // HELLO WORLD!
8$bar = ucfirst(strtolower($bar)); // Hello world!
9?>
10// string manipulation function 
11

1$upperCaseSentance=ucwords("i do not feel good");//I Do Not Feel Good