Selective adding of a string to an array

[etrader]

I have a file containing lines (I mean elements separated by <br>). How I can put these lines into an array, but only those which has a given phrase.

 

Example file

This is the first line<br>
Second line is here<br>
something else<br>
something else<br>
something more<br>

 

I want to catch only lines which contain the word "something" and make an array.

[taquitosensei]

does the file also have linebreaks ("\r" or "\r\n")

Does it look like this.

This is the first line<br>Second line is here<br>something else<br>something else<br>something more<br>

 

or does it look your example?

[codefossa]

<?php

$string = "This is the first line<br>Second line is here<br>something else<br>something else<br>something more<br>";
$array = explode("<br>", $string);
$new_array = array();

foreach ($array as $line)
{
if (strstr($line, "something"))
	array_push($new_array, $line);
}

print_r($new_array);

?>

[AbraCadaver]

preg_match_all('/(.*something.*)<br>/', $file_contents, $matches);
print_r($matches);