You will not run into a problem in codeigniter 2
$config['log_threshold'] = array(1, 3);
in config / config.php
and
log_message('info', 'The purpose of some variable is to provide some value.');
where you want to register something, only this message will be printed in the log file, without redundant debugging code.
BUT
In codeIgniter 3, many kernel system files have
log_message ('info', *******************);
how
log_message('info', 'Config Class Initialized'); log_message('info', 'Controller Class Initialized'); log_message('info', 'Hooks Class Initialized'); ............
That's why when
$config['log_threshold'] = array(1, 3);
or
$config['log_threshold'] = array(3);
or
$config['log_threshold'] = 3;
then all unwanted log messages appear in the log file.
So, one way is to allow this to distribute all the core files and change
log_message('info'
to
log_message('debug'
or creating a new thresold for example
in config / config.php
$config['log_threshold'] = array(1, 5);
in the kernel / MY _Log.php
protected $_levels = array('ERROR' => '1', 'DEBUG' => '2', 'INFO' => '3', 'ALL' => '4', 'USER_INFO' => '5');
Full kernel file / MY _Log.php
class MY_Log extends CI_Log { protected $_log_path; protected $_threshold = 1; protected $_date_fmt = 'Ymd H:i:s'; protected $_enabled = TRUE; protected $_levels = array('ERROR' => '1', 'DEBUG' => '2', 'INFO' => '3', 'ALL' => '4', 'USER_INFO' => '5'); /** * Constructor */ public function __construct() { parent::__construct(); $config =& get_config(); $this->_log_path = ($config['log_path'] !== '') ? $config['log_path'] : APPPATH.'logs/'; $this->_file_ext = (isset($config['log_file_extension']) && $config['log_file_extension'] !== '') ? ltrim($config['log_file_extension'], '.') : 'log'; file_exists($this->_log_path) OR mkdir($this->_log_path, 0755, TRUE); if ( ! is_dir($this->_log_path) OR ! is_really_writable($this->_log_path)) { $this->_enabled = FALSE; } if (is_numeric($config['log_threshold'])) { $this->_threshold = (int) $config['log_threshold']; } elseif (is_array($config['log_threshold'])) { $this->_threshold = 0; $this->_threshold_array = array_flip($config['log_threshold']); } if ( ! empty($config['log_date_format'])) { $this->_date_fmt = $config['log_date_format']; } if ( ! empty($config['log_file_permissions']) && is_int($config['log_file_permissions'])) { $this->_file_permissions = $config['log_file_permissions']; } } // -------------------------------------------------------------------- /** * Write Log File * * Generally this function will be called using the global log_message() function * * @param string the error level * @param string the error message * @param bool whether the error is a native PHP error * @return bool */ public function write_log($level = 'error', $msg, $php_error = FALSE) { if ($this->_enabled === FALSE) { return FALSE; } $level = strtoupper($level); if (( ! isset($this->_levels[$level]) OR ($this->_levels[$level] > $this->_threshold)) && ! isset($this->_threshold_array[$this->_levels[$level]])) { return FALSE; } if($level == 'USER_INFO') { $filepath = $this->_log_path . 'info-log-' . date('Ym-d') . '.php'; } else { $filepath = $this->_log_path . 'log-' . date('Ym-d') . '.php'; } $message = ''; if ( ! file_exists($filepath)) { $newfile = TRUE; // Only add protection to php files if ($this->_file_ext === 'php') { $message .= "<?php defined('BASEPATH') OR exit('No direct script access allowed'); ?>\n\n"; } } if ( ! $fp = @fopen($filepath, 'ab')) { return FALSE; } // Instantiating DateTime with microseconds appended to initial date is needed for proper support of this format if (strpos($this->_date_fmt, 'u') !== FALSE) { $microtime_full = microtime(TRUE); $microtime_short = sprintf("%06d", ($microtime_full - floor($microtime_full)) * 1000000); $date = new DateTime(date('Ymd H:i:s.'.$microtime_short, $microtime_full)); $date = $date->format($this->_date_fmt); } else { $date = date($this->_date_fmt); } $message .= $level.' - '.$date.' --> '.$msg."\n"; flock($fp, LOCK_EX); for ($written = 0, $length = strlen($message); $written < $length; $written += $result) { if (($result = fwrite($fp, substr($message, $written))) === FALSE) { break; } } flock($fp, LOCK_UN); fclose($fp); if (isset($newfile) && $newfile === TRUE) { chmod($filepath, $this->_file_permissions); } return is_int($result); } }