How to convert the first letter of php to uppercase

How to convert the first letter of php to uppercase: 1. Create a PHP sample file; 2. Use the "ucwords($foo)" method to convert the first letter of each word to uppercase; 3. Use "ucfirst ($foo);" method capitalizes the first letter of the first word.

The operating environment of this article: Windows7 system, PHP7.1 version, Dell G3 computer

How to convert the first letter of php to uppercase?

php method to convert the first letter from lowercase to uppercase

Convert the first letter of each word to uppercase: ucwords()

<?php
$foo = &#39;hello world!&#39;;
$foo = ucwords($foo);             // Hello World!
 
$bar = &#39;HELLO WORLD!&#39;;
$bar = ucwords($bar);             // HELLO WORLD!
$bar = ucwords(strtolower($bar)); // Hello World!
?>

ucwords () function converts the first character of each word in a string to uppercase.

Change the first letter of the first word to uppercase: ucfirst()

<?php
$foo = &#39;hello world!&#39;;
$foo = ucfirst($foo);             // Hello world!
 
$bar = &#39;HELLO WORLD!&#39;;
$bar = ucfirst($bar);             // HELLO WORLD!
$bar = ucfirst(strtolower($bar)); // Hello world!
?>

ucfirst() function converts the first character in the string to uppercase.

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