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<?php |
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/** |
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* Class to load config files |
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* |
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* @author Pavel Kulbakin <p.kulbakin@gmail.com> |
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*/ |
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class PMXE_Config implements IteratorAggregate { |
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/** |
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* Config variables stored |
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* @var array |
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*/ |
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protected $config = array(); |
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/** |
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* List of loaded files in order to avoid loading same file several times |
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* @var array |
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*/ |
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protected $loaded = array(); |
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|
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/** |
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* Static method to create config instance from file on disc |
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* @param string $filePath |
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* @param string[optional] $section |
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* @return PMXE_Config |
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*/ |
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public static function createFromFile($filePath, $section = NULL) { |
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$config = new self(); |
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return $config->loadFromFile($filePath, $section); |
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} |
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|
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/** |
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* Load config file |
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* @param string $filePath |
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* @param string[optional] $section |
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* @return PMXE_Config |
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*/ |
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public function loadFromFile($filePath, $section = NULL) { |
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if ( ! is_null($section)) { |
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$this->config[$section] = self::createFromFile($filePath); |
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} else { |
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$filePath = realpath($filePath); |
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if ($filePath and ! in_array($filePath, $this->loaded)) { |
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require $filePath; |
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|
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$sandbox = create_function('', "require '$filePath'; if(array_keys(get_defined_vars()) != array('config')) return array(); return \$config;"); |
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$config = $sandbox(); |
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$this->loaded[] = $filePath; |
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$this->config = array_merge($this->config, $config); |
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} |
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} |
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return $this; |
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} |
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/** |
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* Return value of setting with specified name |
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* @param string $field Setting name |
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* @param string[optional] $section Section name to look setting in |
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* @return mixed |
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*/ |
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public function get($field, $section = NULL) { |
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return ! is_null($section) ? $this->config[$section]->get($field) : $this->config[$field]; |
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} |
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|
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/** |
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* Magic method for checking whether some config option are set |
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* @param string $field |
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* @return bool |
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*/ |
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public function __isset($field) { |
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return isset($this->config[$field]); |
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} |
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/** |
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* Magic method to implement object-like access to config parameters |
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* @param string $field |
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* @return mixed |
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*/ |
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public function __get($field) { |
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return $this->config[$field]; |
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} |
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|
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/** |
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* Return all config options as array |
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* @return array |
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*/ |
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public function toArray($section = NULL) { |
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return ! is_null($section) ? $this->config[$section]->toArray() : $this->config; |
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} |
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|
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public function getIterator() { |
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return new ArrayIterator($this->config); |
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} |
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|
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} |
