String first letter uppercase php

<?php
$foo = 'hello world!';
$foo = ucfirst($foo);             // Hello world!

$bar = 'HELLO WORLD!';
$bar = ucfirst($bar);             // HELLO WORLD!
$bar = ucfirst(strtolower($bar)); // Hello world!
?>

Source: php.net

First character uppercase php

ucwords("hello world"); // Hello World
ucfirst("hello world"); // Hello world

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