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74 lines
2.4 KiB
PHP
74 lines
2.4 KiB
PHP
<?php
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namespace BSR\Lib;
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class Configuration {
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private static $instance = null;
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/**
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* ! WARNING !
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*
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* Those are default values, if you need to change them for a particular host,
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* please just create a file named 'configuration.local.php' in the same directory
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* and redefine the values there !
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*
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* This file must contain an array named $configuration containing the keys you
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* want to redefine. Then, those values will be used to replace those in the
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* array defined just below.
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*
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* @var array configuration values
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*/
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private $values = array();
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private $custom_config_filename = 'configuration.local.php';
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private function __construct() {
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// by default, set the session save path to the default value;
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$this->values['session']['save_path'] = session_save_path();
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if(!file_exists($this->custom_config_filename)) {
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throw new \RuntimeException('No configuration.local.php file was found. Create it with the proper config.');
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}
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$configuration = include_once realpath(dirname(__FILE__) . '/../config/') . $this->custom_config_filename;
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if(!is_array($configuration)) {
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throw new \RuntimeException("You custom configuration in '{$this->custom_config_filename}' must be in a variable named '\$configuration' and be an array.");
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}
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$this->values = array_replace_recursive($this->values, $configuration);
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}
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private function dotNotationAccess($data, $key, $default=null)
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{
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$keys = explode('.', $key);
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foreach ($keys as $k) {
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if (!is_array($data)) {
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throw new \Exception("Try to access non-array as array, key '$key''");
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}
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if (!isset($data[$k])) {
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return $default;
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}
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$data = $data[$k];
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}
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return $data;
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}
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private function value($name, $default) {
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return $this->dotNotationAccess($this->values, $name, $default);
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}
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/**
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* @param $name
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* @param mixed $default the default value for your configuration option
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* @return mixed return the configuration value if the key is find, the default otherwise
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*/
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public static function get($name, $default = null) {
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if(is_null(self::$instance)) {
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self::$instance = new Configuration();
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}
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return self::$instance->value($name, $default);
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}
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}
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