php first letter capital each word

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
11

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

1ucfirst($myword);

1/* 
2	This only Capitalizes words in a string that are entirely alphabetic 
3    and other words are made UPPERCASE
4    Works well if you have a string  of words containing a mixture
5    of English words and part codes etc
6*/ 
7$words = explode(" ", $originalString);
8$finalString = "";
9	foreach($words as $word) {
10		if(ctype_alpha($word)) {
11			$word = ucfirst(strtolower($word));
12		}
13		else {
14			$word = strtoupper($word);
15		}
16		$finalString .= $word." ";
17	}
18echo rtrim($finalString);

1echo ucwords("hello world");