Unink log files that were created the day before in codeigniter - codeigniter

Question

I am trying to unlink files that were created the day before
I have a custom application > core > MY_Log.php file and it creates a log for each error level. For easier reading.
logs > DEBUG-04-08-2016.php
logs > ERROR-04-08-2016.php
logs > INFO-04-08-2016.php
logs > DEBUG-03-08-2016.php
logs > ERROR-03-08-2016.php
logs > INFO-03-08-2016.php
Question how am I able to modify the write_log so could delete / unlink files that were created the day before?
<?php
class MY_Log extends CI_Log {
public function write_log($level, $msg)
{
if ($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;
}
$filepath = $this->_log_path . $level .'-'. date('d-m-Y').'.'.$this->_file_ext;
$message = '';
if ( ! file_exists($filepath))
{
$newfile = TRUE;
// Only add protection to php files
if ($this->_file_ext === 'php')
{
$message .= "";
}
}
if ( ! $fp = #fopen($filepath, 'ab'))
{
return FALSE;
}
flock($fp, LOCK_EX);
// Instantiating DateTime with microseconds appended to initial date is needed for proper support of this format
if (strpos($this->_date_fmt, 'u') !== FALSE)
{
$microtime_full = microtime(TRUE);
$microtime_short = sprintf("%06d", ($microtime_full - floor($microtime_full)) * 1000000);
$date = new DateTime(date('d-m-Y H:i:s.'.$microtime_short, $microtime_full));
$date = $date->format($this->_date_fmt);
}
else
{
$date = date($this->_date_fmt);
}
$message .= $this->_format_line($level, $date, $msg);
for ($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);
}
}

Answer 1

First of use
$config['log_threshold'] = 1;
For only error message, so there will be less number of files
Add below code just before $filepath; to delete previous date logs
$unlink_date = date('Y-m-d',strtotime("-1 days"));
$filepath_unlink = $this->_log_path . $level .'-'. $unlink_date.'.'.$this->_file_ext;
if ( file_exists($filepath_unlink))
{
unlink($filepath_unlink);
}