Summary of PHP English letter case conversion function_PHP tutorial

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

Copy code The code is as follows:

$foo = 'hello world!';
$foo = ucwords($foo); // Hello World!

$bar = 'HELLO WORLD!';
$bar = ucwords($bar); // HELLO WORLD!
$bar = ucwords(strtolower($bar)); // Hello World!
?>

The first letter of the first word is capitalized: ucfirst()

Copy code The code is as follows:

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

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

Change the first letter of the first word to lowercase: lcfirst()

Copy the code The code is as follows:

$foo = 'HelloWorld';
$foo = lcfirst($foo); // helloWorld

$bar = 'HELLO WORLD!';
$bar = lcfirst($bar); // hELLO WORLD!
$bar = lcfirst(strtoupper($bar)); // hELLO WORLD!
?>

Change all letters to uppercase: strtoupper()
Change all letters to lowercase: strtolower()

http://www.bkjia.com/PHPjc/764627.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/764627.htmlTechArticleConvert the first letter of each word to uppercase: ucwords() Copy the code as follows: ?php $foo = ' hello world!'; $foo = ucwords($foo); // Hello World! $bar = 'HELLO WORLD!'; $bar = ucwor...