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Web server access Log Parser

Parse your Apache/Nginx/Varnish/HAProxy logs into PHP objects to programatically handle the data.


composer require kassner/log-parser:~2.1


$parser = new \Kassner\LogParser\LogParser();
$lines = file('/var/log/apache2/access.log', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
foreach ($lines as $line) {
    $entry = $parser->parse($line);

The $entry object will hold all data parsed. If the line does not match the defined format, a \Kassner\LogParser\FormatException will be thrown.

object(Kassner\LogParser\SimpleLogEntry)#4 (8) {
  string(14) ""
  string(1) "-"
  string(8) "www-data"
  string(26) "27/Jan/2014:04:51:16 +0100"
  string(53) "GET /wp-content/uploads/2013/11/whatever.jpg HTTP/1.1"
  string(3) "200"
  string(5) "58678"


Log format

You may customize the log format (by default it matches the Apache common log format)

# default Nginx format:
$parser->setFormat('%h %l %u %t "%r" %>s %O "%{Referer}i" \"%{User-Agent}i"');

Supported format strings

Here is the full list of log format strings supported by Apache, and whether they are supported by the library :

Supported? Format String Property name Description
Y %% percent The percent sign
Y %>s status status
Y %A localIp Local IP-address
Y %a remoteIp Remote IP-address
N %B - Size of response in bytes, excluding HTTP headers.
Y %b responseBytes Size of response in bytes, excluding HTTP headers. In CLF format, i.e. a '-' rather than a 0 when no bytes are sent.
Y %D timeServeRequest The time taken to serve the request, in microseconds.
N %f - Filename
Y %h host Remote host
X %H - The request protocol (this is Apache specific)
Y %I receivedBytes Bytes received, including request and headers, cannot be zero. You need to enable mod_logio to use this.
N %k - Number of keepalive requests handled on this connection. Interesting if KeepAlive is being used, so that, for example, a '1' means the first keepalive request after the initial one, '2' the second, etc...; otherwise this is always 0 (Y indicating the initial request). Available in versions 2.2.11 and later.
Y %l logname Remote logname (from identd, if supplied). This will return a dash unless mod_ident is present and IdentityCheck is set On.
Y %m requestMethod The request method
Y %O sentBytes Bytes sent, including headers, cannot be zero. You need to enable mod_logio to use this.
Y %p port The canonical port of the server serving the request
N %P - The process ID of the child that serviced the request.
N %q - The query string (prepended with a ? if a query string exists, otherwise an empty string)
Y %r request First line of request
N %R - The handler generating the response (if any).
X %S scheme This is nginx specific:
N %s - Status. For requests that got internally redirected, this is the status of the original request --- %>s for the last.
X %T requestTime The time taken to serve the request, in seconds. This option is not consistent, Apache won't inform the milisecond part.
Y %t time Time the request was received (standard english format)
Y %u user Remote user (from auth; may be bogus if return status (%s) is 401)
Y %U URL The URL path requested, not including any query string.
Y %v serverName The canonical ServerName of the server serving the request.
Y %V canonicalServerName The server name according to the UseCanonicalName setting.
N %X - Connection status when response is completed: X = connection aborted before the response completed. + = connection may be kept alive after the response is sent. - = connection will be closed after the response is sent.
N %{Foobar}C - The contents of cookie Foobar in the request sent to the server. Only version 0 cookies are fully supported.
N %{Foobar}e - The contents of the environment variable FOOBAR
Y %{Foobar}i *Header The contents of Foobar: header line(s) in the request sent to the server. Changes made by other modules (e.g. mod_headers) affect this. If you're interested in what the request header was prior to when most modules would have modified it, use mod_setenvif to copy the header into an internal environment variable and log that value with the %{VARNAME}e described above.
N %{Foobar}n - The contents of note Foobar from another module.
N %{Foobar}o - The contents of Foobar: header line(s) in the reply.
Y %{format}p *Port The canonical port of the server serving the request or the server's actual port or the client's actual port. Valid formats are canonical, local, or remote.
N %{format}P - The process ID or thread id of the child that serviced the request. Valid formats are pid, tid, and hextid. hextid requires APR 1.2.0 or higher.
N %{format}t - The time, in the form given by format, which should be in strftime(3) format. (potentially localized) (This directive was %c in late versions of Apache 1.3, but this conflicted with the historical ssl %{var}c syntax.)

Beware: You should really read the notes when using a option that is marked with a X on the Supported? column.

Custom formats

See #50 (comment)

Entry object

Before 2.0.0 it was possible to overwrite the entry object returned by overwriting the createEntry method. With strict types, this is no longer possible, so instead you have to use the newly created interfaces.

First, create two new classes, your entry object and a factory that is responsible of creating it:

class MyEntry implements \Kassner\LogParser\LogEntryInterface

class MyEntryFactory implements \Kassner\LogParser\LogEntryFactoryInterface
    public function create(array $data): \Kassner\LogParser\LogEntryInterface
        // @TODO implement your code here to return a instance of MyEntry

And then provide the factory as the second argument to the LogParser constructor:

$factory = new MyEntryFactory();
$parser = new \Kassner\LogParser\LogParser(null, $factory);
$entry = $parser->parse(' - www-data [27/Jan/2014:04:51:16 +0100] "GET /wp-content/uploads/2013/11/whatever.jpg HTTP/1.1" 200 58678');

$entry will be an instance of MyEntry.