//string to all uppercase
$string = "String with Mixed use of Uppercase and Lowercase";
//php string to uppercase
$string = strtoupper($string);
// = "STRING WITH MIXED USE OF UPPERCASE AND LOWERCASE"
<?php
$foo = 'hello world!';
$foo = ucfirst($foo); // Hello world!
$bar = 'HELLO WORLD!';
$bar = ucfirst($bar); // HELLO WORLD!
$bar = ucfirst(strtolower($bar)); // Hello world!
?>
// string manipulation function
ucwords("hello world"); // Hello World
ucfirst("hello world"); // Hello world$lowercase = "this is lower case";
$uppercase = strtoupper($lowercase);
echo $uppercase;<?php
/* Convert the first character of "hello" to uppercase: */
echo ucfirst("hello samy!");
//output : Hello samy!
?><?php
$str_first_cap = "hang on, this is first letter capital example!";
echo ucwords($str_first_cap);
?>