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595e75bd14
use references to assign values into the config array more efficiently, prevents a lot of memory churn caused by the recursive approach
72 lines
2.3 KiB
PHP
72 lines
2.3 KiB
PHP
<?php
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/*
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* Copyright (C) 2015 Daniel Preussker <f0o@devilcode.org>
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* */
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/**
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* Merge config function
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* @author f0o <f0o@devilcode.org>
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* @copyright 2015 f0o, LibreNMS
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* @license GPL
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* @package LibreNMS
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* @subpackage Config
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*/
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/**
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* merge the database config with the global config
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* Global config overrides db
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*/
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function mergedb()
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{
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global $config;
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$db_config = array();
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foreach (dbFetchRows('SELECT `config_name`,`config_value` FROM `config`') as $obj) {
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assign_array_by_path($db_config, $obj['config_name'], $obj['config_value']);
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}
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$config = array_replace_recursive($db_config, $config);
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}
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/**
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* Assign a value into the passed array by a path
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* 'snmp.version' = 'v1' becomes $arr['snmp']['version'] = 'v1'
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*
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* @param array $arr the array to insert the value into, will be modified in place
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* @param string $path the path to insert the value at
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* @param mixed $value the value to insert, will be type cast
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* @param string $separator path separator
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*/
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function assign_array_by_path(&$arr, $path, $value, $separator = '.')
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{
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// type cast value. Is this needed here?
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if (filter_var($value, FILTER_VALIDATE_INT)) {
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$value = (int) $value;
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} elseif (filter_var($value, FILTER_VALIDATE_FLOAT)) {
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$value = (float) $value;
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} elseif (filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE) !== null) {
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$value = filter_var($value, FILTER_VALIDATE_BOOLEAN);
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}
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$keys = explode($separator, $path);
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// walk the array creating keys if they don't exist
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foreach ($keys as $key) {
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$arr = &$arr[$key];
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}
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// assign the variable
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$arr = $value;
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}
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