capitalize in php

1//string to all uppercase
2$string = "String with Mixed use of Uppercase and Lowercase";
3//php string to uppercase
4$string = strtoupper($string);
5// = "STRING WITH MIXED USE OF UPPERCASE AND LOWERCASE"

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$lowercase = "this is lower case";
2$uppercase = strtoupper($lowercase);
3
4echo $uppercase;

1<?php
2/* Convert the first character of "hello" to uppercase:  */
3echo ucfirst("hello samy!");
4
5//output : Hello samy!
6?>

1
2<?php
3$foo = 'bonjour tout le monde!';
4$foo = ucfirst($foo);             // Bonjour tout le monde!
5
6$bar = 'BONJOUR TOUT LE MONDE!';
7$bar = ucfirst($bar);             // BONJOUR TOUT LE MONDE!
8$bar = ucfirst(strtolower($bar)); // Bonjour tout le monde!
9?>
10
11

1<?php
2echo strtoupper("Hello WORLD!");
3?>