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See Release Notes

  • Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
  • Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
<?php

// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * @package    moodlecore
 * @subpackage backup-logger
 * @copyright  2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

/**
 * Logger implementation that sends indented messages (depth option) to one file
 *
 * TODO: Finish phpdocs
 */
class file_logger extends base_logger {

    protected $fullpath; // Full path to OS file where contents will be stored
    protected $fhandle;  // File handle where all write operations happen

    public function __construct($level, $showdate = false, $showlevel = false, $fullpath = null) {
        if (empty($fullpath)) {
            throw new base_logger_exception('missing_fullpath_parameter', $fullpath);
        }
        if (!is_writable(dirname($fullpath))) {
            throw new base_logger_exception('file_not_writable', $fullpath);
        }
        // Open the OS file for writing (append)
        $this->fullpath = $fullpath;
        if ($level > backup::LOG_NONE) { // Only create the file if we are going to log something
            if (! $this->fhandle = fopen($this->fullpath, 'a')) {
                throw new base_logger_exception('error_opening_file', $fullpath);
            }
        }
        parent::__construct($level, $showdate, $showlevel);
    }

    public function __destruct() {
< @fclose($this->fhandle); // Blindy close the file handler (no exceptions in destruct)
> if (is_resource($this->fhandle)) { > // Blindy close the file handler (no exceptions in destruct). > @fclose($this->fhandle); > }
} public function __sleep() {
< @fclose($this->fhandle); // Blindy close the file handler before serialization
> if (is_resource($this->fhandle)) { > // Blindy close the file handler before serialization. > @fclose($this->fhandle); > $this->fhandle = null; > }
return array('level', 'showdate', 'showlevel', 'next', 'fullpath'); } public function __wakeup() { if ($this->level > backup::LOG_NONE) { // Only create the file if we are going to log something if (! $this->fhandle = fopen($this->fullpath, 'a')) { throw new base_logger_exception('error_opening_file', $this->fullpath); } } } /** * Close the logger resources (file handle) if still open. * * @since Moodle 3.1 */ public function close() { // Close the file handle if hasn't been closed already. if (is_resource($this->fhandle)) { fclose($this->fhandle); $this->fhandle = null; } } // Protected API starts here protected function action($message, $level, $options = null) { $prefix = $this->get_prefix($level, $options); $depth = isset($options['depth']) ? $options['depth'] : 0; // Depending of the type (extension of the file), format differently if (substr($this->fullpath, -5) !== '.html') { $content = $prefix . str_repeat(' ', $depth) . $message . PHP_EOL; } else { $content = $prefix . str_repeat('&nbsp;&nbsp;', $depth) . htmlentities($message, ENT_QUOTES, 'UTF-8') . '<br/>' . PHP_EOL; }
< if (false === fwrite($this->fhandle, $content)) {
> if (!is_resource($this->fhandle) || (false === fwrite($this->fhandle, $content))) {
throw new base_logger_exception('error_writing_file', $this->fullpath); } return true; } }