What are some best practices for handling multi-line text patterns in PHP using preg_match?

When dealing with multi-line text patterns in PHP using preg_match, it's important to use the "s" modifier to allow the dot (.) to match newline characters. This ensures that the pattern can correctly match across multiple lines in the input text. 

$text = "This is a multi-line text pattern.
It spans across multiple lines.
Using preg_match with the 's' modifier allows matching across lines.";

$pattern = '/multi-line.*lines/s';

if (preg_match($pattern, $text, $matches)) {
    echo "Match found: " . $matches[0];
} else {
    echo "No match found.";
}

Keywords

PHP preg_match multi-line text patterns regular expressions best practices

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