I am reading a 'kind' of csv file and exploding it and storing it in array.

The file I am reading has this structure

Id,Log,Res,File

mydb('Test1','log1','Pass','lo1.txt').
mydb('Test2','log2','Pass','lo2.txt').
mydb('Test3','log3','Pass','lo3.txt').

Now what I am trying to do is : reading the last record in my database, get the Name, lets say in this case 'Test1' and then I am searching through my file and where I can find the position of 'Test1' and get the next lines in the file, extract the ID,s and add it to database.

I am getting the position of desired string in the file, but I am not sure how to get the next lines too.

Here's my code so far.

<?php


    mysql_connect("localhost", "root", "") or die(mysql_error());
    mysql_select_db("testing") or die(mysql_error());



$result = mysql_query("select ID from table_1 order by  S_no DESC limit 1") or die(mysql_error());  
$row = mysql_fetch_array( $result );
$a = $row['ID'];
echo 'Present Top Row is '.$a.'<br>';

$addresses = explode("\n", file_get_contents('\\\\fil1\\logs\\tes.pl'));

    foreach($addresses as $val)
    {

    $pos = strstr($val, $a);

    if ($pos === false) {

    } else {
        echo "The string <br> '$a' <br>was found in the string <br>'$val' <br>";
        echo " and exists at position <br>$pos<br>";


    }

    }