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Edit File: lang_helper.php

<?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\profilefields;

/**
* Custom Profile Fields
*/
class lang_helper
{
	/**
	* Array with the language option, grouped by field and language
	* @var array
	*/
	protected $options_lang = array();

/**
	* Database object
	* @var \phpbb\db\driver\driver_interface
	*/
	protected $db;

/**
	* Table where the language strings are stored
	* @var string
	*/
	protected $language_table;

/**
	* Construct
	*
	* @param	\phpbb\db\driver\driver_interface	$db		Database object
	* @param	string		$language_table		Table where the language strings are stored
	*/
	public function __construct($db, $language_table)
	{
		$this->db = $db;
		$this->language_table = $language_table;
	}

/**
	* Loads preview options into language entries for options
	*
	* @param	int		$field_id
	* @param	int		$lang_id
	* @param	mixed	$preview_options
	*/
	public function load_preview_options($field_id, $lang_id, $preview_options)
	{
		$lang_options = (!is_array($preview_options)) ? explode("\n", $preview_options) : $preview_options;

foreach ($lang_options as $num => $var)
		{
			if (!isset($this->options_lang[$field_id]))
			{
				$this->options_lang[$field_id] = array();
			}
			if (!isset($this->options_lang[$field_id][$lang_id]))
			{
				$this->options_lang[$field_id][$lang_id] = array();
			}
			$this->options_lang[$field_id][$lang_id][($num + 1)] = $var;
		}
	}

/**
	* Fetches language entries for options from DB
	*
	* @param	int		$lang_id
	*/
	public function load_option_lang($lang_id)
	{
		$sql = 'SELECT field_id, option_id, lang_value
				FROM ' . $this->language_table . '
				WHERE lang_id = ' . (int) $lang_id . "
				ORDER BY option_id";

$result = $this->db->sql_query($sql);

while ($row = $this->db->sql_fetchrow($result))
		{
			$this->options_lang[$row['field_id']][$lang_id][($row['option_id'] + 1)] = $row['lang_value'];
		}

$this->db->sql_freeresult($result);
	}

/**
	* Are language options set for this field?
	*
	* @param	int		$field_id		Database ID of the field
	* @param	int		$lang_id		ID of the language
	* @param	int		$field_value	Selected value of the field
	* @return boolean
	*/
	public function is_set($field_id, $lang_id = null, $field_value = null)
	{
		$is_set = isset($this->options_lang[$field_id]);

if ($is_set && (!is_null($lang_id) || !is_null($field_value)))
		{
			$is_set = isset($this->options_lang[$field_id][$lang_id]);
		}

if ($is_set && !is_null($field_value))
		{
			$is_set = isset($this->options_lang[$field_id][$lang_id][$field_value]);
		}

return $is_set;
	}

/**
	* Get the selected language string
	*
	* @param	int		$field_id		Database ID of the field
	* @param	int		$lang_id		ID of the language
	* @param	int		$field_value	Selected value of the field
	* @return string
	*/
	public function get($field_id, $lang_id, $field_value = null)
	{
		if (is_null($field_value))
		{
			return $this->options_lang[$field_id][$lang_id];
		}

return $this->options_lang[$field_id][$lang_id][$field_value];
	}
}