Parse disjointed TXT file in PHP based on string matches? - php

Question

So I have a TXT file that is disjointed. How do I parse it so that it can use string matches to figure out data?
From the sample below I want:
timestamp =
src=
dst=
user=
agent=
request:
url=
The value should be NULL if it was not found on the line. I tried using preg_match() but it does not execute the entire file. No outputs.
Thank you.
Sample.txt
2016-02-24 13:54:23 Local0.Info 172.16.120.4 1 1456311263.806656820
ASD_MX600 flows src=108.177.15.189 dst=213.130.115.218 protocol=udp
sport=443 dport=61907 pattern: 1 all
2016-02-24 13:54:23 Local0.Info 172.16.120.4 1 1456311263.500015263
ASD_MX600 urls src=172.16.41.15:62490 dst=144.76.76.148:80
mac=00:1B:0D:63:84:00
user=CN=Smith\John,OU=S-HS,OU=SAcc,DC=abc,DC=org,DC=ab
agent='Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101
seb/2.0 SEBKEY' request: GET
http://something.com/theme/image.php/clean/page/1455532301/icon
2016-02-24 14:29:14 Local0.Info 172.16.120.4 1 1456313354.489880924
ASD_MX600 urls src=172.16.41.143:57256 dst=74.125.232.155:443
mac=00:1C:B0:10:A8:00 request: UNKNOWN
https://4780928.fls.doubleclick.net/...
Also, I had asked a similar question here -> Complex parsing a text file in PHP - but there was no room to ask an additional extension to the same so posting a new question. Thank you.
SK
PS: Code I have tried but does not work.
EXAMPLE 1
$myfile = fopen("C:\Documents and Settings\Administrator\Desktop\LogCatcher Script\SyslogCatchAll-2016-02-25.txt", "r") or die("Unable to open file!");
// Output one line until end-of-file
while(!feof($myfile)) {
$line = fgets($myfile) . "<br>";// you can do the explode and assignment here.
//example
$row_data = explode(" ", $line); //FIRST BLAST
$timestamp = $row_data[0] ; //Pick up the timestamp for Column 1
$timestamp;
//SECOND BLAST
$remainingData = explode(" ",$row_data[3]); //chop it off
$src = $remainingData[4];
$src = ltrim($src, "src=");
$dst= $remainingData[5];
$dst = ltrim($dst, "dst=");
$usr = $remainingData[7];
if (preg_match('/user=/',$usr))
{
$usr = ltrim($usr, "user=");
}
else {
$usr = "No User Found";
}
... This is where it starts to spasm out since not every line has"user="...
EXAMPLE 2
Another way I tried using another user's code.
<?php
$rows = explode("\n", file_get_contents('sample.txt'));
$result = array();
foreach ($rows as $row) {
if (trim($row) == "") {
continue;
}
$timeMatches = array();
$reTime = "/([0-9-]* [0-9:]*) /";
preg_match($reTime, $row, $timeMatches);
$re = "/src=(.*) dst=(.*) mac=(.*) user=(.*) agent=(.*) request: (.*) (.*)/";
$matches = array();
preg_match($re, $row, $matches);
$result[] = array('time' => $timeMatches[1], 'src' => $matches[1]
, 'dst' => $matches[2], 'mac' => $matches[3]
, 'user' => $matches[4], 'agent' => $matches[5]
, 'method' => $matches[6], 'url' => $matches[7]);
}
var_dump($result);
?>
Runs and displays nothing. Just ends.