...
'import' => array(
	...
	'application.components.MHelper. ',
	...
),
...

MHelper::get()->string->toLower('TeSt StRiNg');          // test string
MHelper::get()->string()->toUpper('TeSt StRiNg');        // TEST STRING
MHelper::get()->string('TeSt StRiNg')->ucwords();        // Test String
MHelper::get('string', 'TeSt StRiNg')->toLower();        // test string
MHelper::get(null, 'TeSt StRiNg')->string->toLower();    // test string

$MString = new MString('TeSt StRiNg');
$MString->toLower();                                     // test string

$MString = new MString();
$MString->toLower('TeSt StRiNg');                        // test string

// PHP 5.3+ only
MHelper::String()->toLower('TeSt StRiNg');               // test string
MHelper::String('TeSt StRiNg')->toUpper();               // TEST STRING
MString::toLower('TeSt StRiNg');                         // test string

MHelper::get()->string('TeSt StRiNg', true)->toUpper()->lcFirst()->value;                 // tEST STRING
MHelper::get()->string(null, true)->toUpper('TeSt StRiNg')->lcFirst()->value;             // tEST STRING
MHelper::get()->string('TeSt StRiNg', true)->toUpper()->lcFirst()->value;                 // tEST STRING
MHelper::get('string', 'TeSt StRiNg', true)->toUpper()->lcFirst()->value;                 // tEST STRING
MHelper::get(null, 'TeSt StRiNg', true)->string->toUpper()->lcFirst()->value;             // tEST STRING
MHelper::get(null, null, true)->string('TeSt StRiNg')->toUpper()->lcFirst()->value;       // tEST STRING

$MString = new MString('TeSt StRiNg', true);
$MString->toLower()->ucFirst()->value;                                  // Test string

$MString = new MString();
$MString->setChain(true)->toLower('TeSt StRiNg')->ucFirst()->value;     // Test string

// PHP 5.3+ only
MHelper::String('TeSt StRiNg', true)->toLower()->ucFirst()->value;               // Test string
MHelper::String(null, true)->toLower('TeSt StRiNg')->ucFirst()->value;           // Test string
MHelper::String('TeSt StRiNg')->setChain(true)->toLower()->ucFirst()->value;     // Test string
MHelper::String()->setChain(true)->toLower('TeSt StRiNg')->ucFirst()->value;     // Test string
MString::chain(true)->toUpper('TeSt StRiNg')->lcFirst()->value;                  // tEST STRING