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msd2/phpBB3/phpbb/config_php_file.php

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+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb;
+
+class config_php_file
+{
+	/** @var string phpBB Root Path */
+	protected $phpbb_root_path;
+
+	/** @var string php file extension  */
+	protected $php_ext;
+
+	/**
+	* Indicates whether the php config file has been loaded.
+	*
+	* @var bool
+	*/
+	protected $config_loaded = false;
+
+	/**
+	* The content of the php config file
+	*
+	* @var array
+	*/
+	protected $config_data = array();
+
+	/**
+	* The path to the config file. (Default: $phpbb_root_path . 'config.' . $php_ext)
+	*
+	* @var string
+	*/
+	protected $config_file;
+
+	private $defined_vars;
+
+	/**
+	* Constructor
+	*
+	* @param string $phpbb_root_path phpBB Root Path
+	* @param string $php_ext php file extension
+	*/
+	function __construct($phpbb_root_path, $php_ext)
+	{
+		$this->phpbb_root_path = $phpbb_root_path;
+		$this->php_ext = $php_ext;
+		$this->config_file = $this->phpbb_root_path . 'config.' . $this->php_ext;
+	}
+
+	/**
+	* Set the path to the config file.
+	*
+	* @param string $config_file
+	*/
+	public function set_config_file($config_file)
+	{
+		$this->config_file = $config_file;
+		$this->config_loaded = false;
+	}
+
+	/**
+	* Returns an associative array containing the variables defined by the config file.
+	*
+	* @return array Return the content of the config file or an empty array if the file does not exists.
+	*/
+	public function get_all()
+	{
+		$this->load_config_file();
+
+		return $this->config_data;
+	}
+
+	/**
+	* Return the value of a variable defined into the config.php file or null if the variable does not exist.
+	*
+	* @param string $variable The name of the variable
+	* @return mixed Value of the variable or null if the variable is not defined.
+	*/
+	public function get($variable)
+	{
+		$this->load_config_file();
+
+		return isset($this->config_data[$variable]) ? $this->config_data[$variable] : null;
+	}
+
+	/**
+	* Load the config file and store the information.
+	*
+	* @return null
+	*/
+	protected function load_config_file()
+	{
+		if (!$this->config_loaded && file_exists($this->config_file))
+		{
+			$this->defined_vars = get_defined_vars();
+
+			require($this->config_file);
+			$this->config_data = array_diff_key(get_defined_vars(), $this->defined_vars);
+
+			$this->config_loaded = true;
+		}
+	}
+
+	/**
+	* Convert either 3.0 dbms or 3.1 db driver class name to 3.1 db driver class name.
+	*
+	* If $dbms is a valid 3.1 db driver class name, returns it unchanged.
+	* Otherwise prepends phpbb\db\driver\ to the dbms to convert a 3.0 dbms
+	* to 3.1 db driver class name.
+	*
+	* @param string $dbms dbms parameter
+	* @return string driver class
+	* @throws \RuntimeException
+	*/
+	public function convert_30_dbms_to_31($dbms)
+	{
+		// Note: this check is done first because mysqli extension
+		// supplies a mysqli class, and class_exists($dbms) would return
+		// true for mysqli class.
+		// However, per the docblock any valid 3.1 driver name should be
+		// recognized by this function, and have priority over 3.0 dbms.
+		if (strpos($dbms, 'phpbb\db\driver') === false && class_exists('phpbb\db\driver\\' . $dbms))
+		{
+			return 'phpbb\db\driver\\' . $dbms;
+		}
+
+		if (class_exists($dbms))
+		{
+			// Additionally we could check that $dbms extends phpbb\db\driver\driver.
+			// http://php.net/manual/en/class.reflectionclass.php
+			// Beware of possible performance issues:
+			// http://stackoverflow.com/questions/294582/php-5-reflection-api-performance
+			// We could check for interface implementation in all paths or
+			// only when we do not prepend phpbb\db\driver\.
+
+			/*
+			$reflection = new \ReflectionClass($dbms);
+
+			if ($reflection->isSubclassOf('phpbb\db\driver\driver'))
+			{
+				return $dbms;
+			}
+			*/
+
+			return $dbms;
+		}
+
+		throw new \RuntimeException("You have specified an invalid dbms driver: $dbms");
+	}
+}