我想创建一个脚本来解析或理解Apache的错误日志以查看最近的错误是什么。我想知道是否有人已经有了这样的脚本,或者有任何开始的想法?
首先,有几件事情需要考虑:
但是,如果这些都不适用于您,您可以使用普通的文件读取命令来完成它。获取最后一个错误的最简单方法是
$contents = @file('/path/to/error.log', FILE_SKIP_EMPTY_LINES);
if (is_array($contents)) {
echo end($contents);
}
unset($contents);
可能有更好的方法来完成这个任务,不会浪费内存,但我会将其留给读者作为练习。error_log = /path/to/error.log
您可以在httpd.conf或.htaccess文件中(如果您有访问权限)使用php_flag表示法来设置它。php_flag error_log /web/mysite/logs/error.log
如果其他人正在寻找示例脚本,我已经整理了一些基础内容:
<?php
exec('tail /usr/local/apache/logs/error_log', $output);
?>
<Table border="1">
<tr>
<th>Date</th>
<th>Type</th>
<th>Client</th>
<th>Message</th>
</tr>
<?
foreach($output as $line) {
// sample line: [Wed Oct 01 15:07:23 2008] [error] [client 76.246.51.127] PHP 99. Debugger->handleError() /home/gsmcms/public_html/central/cake/libs/debugger.php:0
preg_match('~^\[(.*?)\]~', $line, $date);
if(empty($date[1])) {
continue;
}
preg_match('~\] \[([a-z]*?)\] \[~', $line, $type);
preg_match('~\] \[client ([0-9\.]*)\]~', $line, $client);
preg_match('~\] (.*)$~', $line, $message);
?>
<tr>
<td><?=$date[1]?></td>
<td><?=$type[1]?></td>
<td><?=$client[1]?></td>
<td><?=$message[1]?></td>
</tr>
<?
}
?>
</table>
有很多PHP脚本可以做到这一点,只需在谷歌上搜索示例即可。如果您想自己编写,请注意了解日志文件的位置(在httpd.conf文件中定义)和日志文件格式。格式也在httpd.conf中定义。
BigFile.php
<?php
$run_test = true;
$test_file = 'BigFile.php';
class BigFile
{
private $file_handle;
/**
*
* Load the file from a filepath
* @param string $path_to_file
* @throws Exception if path cannot be read from
*/
public function __construct( $path_to_log )
{
if( is_readable($path_to_log) )
{
$this->file_handle = fopen( $path_to_log, 'r');
}
else
{
throw new Exception("The file path to the file is not valid");
}
}
/**
*
* 'Finish your breakfast' - Jay Z's homme Strict
*/
public function __destruct()
{
fclose($this->file_handle);
}
/**
*
* Returns a number of characters from the end of a file w/o loading the entire file into memory
* @param integer $number_of_characters_to_get
* @return string $characters
*/
public function getFromEnd( $number_of_characters_to_get )
{
$offset = -1*$number_of_characters_to_get;
$text = "";
fseek( $this->file_handle, $offset , SEEK_END);
while(!feof($this->file_handle))
{
$text .= fgets($this->file_handle);
}
return $text;
}
}
if( $run_test )
{
$number_of_characters_to_get = 100000;
$bf = new BigFile($test_file);
$text = $bf->getFromEnd( $number_of_characters_to_get );
echo "$test_file has the following $number_of_characters_to_get characters at the end:
<br/> <pre>$text</pre>";
}
?>