php - How to make sure an object exists before performing operations -


i have index.php loads bites of page other php files. @ top of index.php have require_once statements including php class handles db connection , instantiate object of class:

<?php      require_once 'libs/databasehandler.php';      $dbh = new databasehandler('localhost', 'root', '*******', 'pride2012');      require_once 'pages/01_includes.php';     require_once 'pages/02_menu.php';     require_once 'pages/03_slider.php';     require_once 'pages/04_news.php';    ?>

the page-bit using db managing class 04_news.php, enough constructing object before 04_news.php loads make myself sure object exists before database related operations start?

defining object prior operations enough.

alternatively, can use built-in __autoload( ) method dynamically load classes needed.

take @ php.net: autoloading classes more information.


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