Simple PHP class wrapper for reading configuration from ini files

ConfigParser.php

<?php
class ConfigParser {
   function __construct($ini_file) {
      $this->data = parse_ini_file($ini_file, true);
      if ($this->data === FALSE) {
	 throw new Exception("Error reading file {$ini_file}");
      }
   }

   function sections() {
      return array_keys($this->data);
   }


   /**
    * Retrieve a setting from the config file. Use the format
    * "section.name" to specify the variable to retrieve.  For example, with
    * the ini file:
    * ---
    * [development]
    * database=devel_db
    * ---
    * $parser->get("development.database") returns "devel_db"
    */
   function get($key) {
      list($section, $setting) = explode(".", $key);

      $has_section = isset($this->data[$section]);
      $has_setting = $has_section && isset($this->data[$section][$setting]);

      return ($has_section && $has_setting ? $this->data[$section][$setting] : FALSE);
   }
}

ConfigParser_test.php

<?php

require('./ConfigParser.php');

$parser = new ConfigParser("test.ini");

assert(in_array("development", $parser->sections()));
assert(in_array("production", $parser->sections()));

assert($parser->get("development.database") === "devel_db");
assert($parser->get("development.user") === "franklin");

assert($parser->get("frabjous.day") === FALSE);

assert($parser->get("production.database") === "prod_db");
assert($parser->get("production.user") === "marko");
assert($parser->get("production.danger") === "severe");

echo "ALL TESTS PASSED :-)\n";

test.ini

[development]
database=devel_db
user=franklin

[production]
database=prod_db
user=marko
danger=severe