Get line number from preg_match_all()

Question

I\'m using PHP\'s preg_match_all() to search a string imported using file_get_contents(). The regex returns matches but I would like to know at which line number those matches a

Answer 1

You can't do this with only regexs. At least not cleanly. What can you do it to use the PREG_OFFSET_CAPTURE flag of the preg_match_all and do a post parsing of the entire file.

I mean after you have the array of matches strings and starting offsets for each string just count how many \r\n or \n or \r are between the beginning of the file and the offset for each match. The line number of the match would be the number of distinct EOL terminators (\r\n | \n | \r) plus 1.