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POBest performance for loading settings in PHP?
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copied!<p>My latest idea for do settings across my php project I am building was to store all my settings in a config PHP file, the php file will just return an array like this...</p> <pre><code><?php /** * @Filename app-config.php * @description Array to return to our config class */ return array( 'db_host' => 'localhost', 'db_name' => 'socialnetwork', 'db_user' => 'root', 'db_password' => '', 'site_path' => 'C:/webserver/htdocs/project/', 'site_url' => 'http://localhost/project/', 'image_path' => 'C:/webserver/htdocs/fproject/images/', 'image_url' => 'http://localhost/project/images/', 'site_name' => 'test site', 'admin_id' => 1, 'UTC_TIME' => gmdate('U', time()), 'ip' => $_SERVER['REMOTE_ADDR'], 'testtttt' => array( 'testtttt' => false ) ); ?> </code></pre> <p>Please note the actual config array is MUCH MUCH larger, many more items in it...<br> Then I would have a Config.class.php file that would load my array file and use the magic method __get($key). I can then autoload my config class file and access any site settings like this... </p> <pre><code>$config->ip; $config->db_host; $config->db_name; $config->db_user; </code></pre> <p>So I realize this works great and is very flexible, in my class I can have it read in a PHP file with array like I am doing now, read INI file into array, read XML file into array, read JSON file into array. So it is very flexible for future projects but I am more concerned about performance for this particular project that I am working on now, it will be a social network site like facebook/myspace and I have had one before prior to this project and once I got around 100,000 user's performance became very important. So I am not "micro-optimizing" or "premature optimizing" I am stricly looking to do this the BEST way with performance in mind, it does not need to be flexible as I will only need it on this project. </p> <p>So with that information, I always read about people trying to eliminate function calls as much as possible saying <strong>function calls cause more overhead</strong>. SO I am wanting to know from more experienced people what you think about this? I am new to using classes and objects in PHP, so is calling $config->db_user; as costly as calling a function in procedural like this getOption('db_user'); ? I am guessing it is the same as every time I would call a setting it is using the __get() method. </p> <p>So for best performance should I go about this a different way? Like just loading my config array into a bootstrap file and accessing items when I need them like this...</p> <pre><code>$config['db_host']; $config['db_username']; $config['db_password']; $config['ip']; </code></pre> <p>Please give me your thoughts on this without me having to do a bunch of benchmark test</p>

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