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

$data = "Abba
Beegees
Beatles";

preg_match_all('/Abba|Beegees|Beatles/', $data, $matches, PREG_OFFSET_CAPTURE);
foreach (current($matches) as $match) {
    $matchValue = $match[0];
    $lineNumber = substr_count(mb_substr($data, 0, $match[1]), PHP_EOL) + 1;

    echo "`{$matchValue}` at line {$lineNumber}\n";
}

Output

`Abba` at line 1
`Beegees` at line 2
`Beatles` at line 3

(check your performance requirements)