PHP Script to search muliplte files Urgent

Applications Web Development
1

Hi,
I have multiplte text files containing numbers e:g

123400 0000001
000001 2333334

I am taking input from html form and passing to php script using post.
I want to search multiple files if input is found then display the line
containing the input.
Thanks in advance.

2

How much have you done. Have you got any of this in place? You can search for the numbers and display the line easily enough with preg_match

$numbers_to_search = '123400 0000001';
$file_to_search = 'path_to_file';

$numbers_to_search = str_replace(" ", "\s", $numbers_to_search);
$str=$file_get_contents($file_to_search);
if(preg_match_all("/(\r\n|\n|\r).*".$str.".*(\r\n|\n|\r|$)/u", $str, $matches))
{
     print_r($matches);
}

Is it always going to be number though. or could it be any text to search. If it could be any text then using a regex might not be so useful. Maybe using the file command would be better