Internationalization of cakephp site:

STEP 1) Write the following code in cakePhp routes.php file

   Router::connect('/:language/:controller/:action/*',
                   array(),
                   array('language' => '[a-z]{3}'));

STEP 2) Write the following configuration ie for setting default language in config/bootstrap.php file

 Configure::write('Config.language', 'eng');

STEP 3) Now set the language on page load or click on links- WRITE THE CODE IN controller/appController.php

STEP 3.1) Use the components

 public $components = array('Cookie','Session');

STEP 3.2)

 public function beforeFilter() {
          $this->_setLanguage();
        }    
        private function _setLanguage() {
                    if ($this->Cookie->read('lang') && !$this->Session->check('Config.language')) { //if cookies and session already set
                        $this->Session->write('Config.language', $this->Cookie->read('lang'));
                    } //if the user clicked the language URL 
                    else if (   isset($this->params['language']) && ($this->params['language'] !=  $this->Session->read('Config.language'))) {
                                //then update the value in Session and the one in Cookie
                        $this->Session->write('Config.language', $this->params['language']);
                        $this->Cookie->write('lang', $this->params['language'], false, '20 days');
                    }
            }

STEP 4) Create a folder 'eng' in app/locale/eng Create a .po file there by any domain name for ex- if it is for signup page name the file signup.po if for registration the name it registration.po if you wants to make a common file for all the constants you can name it default.php

lets say it is default.po:

msgid "hello"
msgstr "Buna ziua"

msgid "hello DINESH"
msgstr "Buna ziua dinesh SINGH RAWAT"

STEP 5) Write the following code in yo .ctp file

<?php 
  echo $this->Html->link('English', array('language'=>'eng')); 
  echo $this->Html->link('Franais', array('language'=>'fre')); 

  echo '******';
     echo _&#95;('hello DINESH');
    ?>