php-regexHow to use PHP regex to match a multiline?

Using PHP regex to match a multiline is possible with the /m modifier. This modifier allows the pattern to match across multiple lines.

Example code

$string = "This is a
multiline string";

$pattern = "/This.*string/m";

if (preg_match($pattern, $string)) {
    echo "Match found!";
}

Output example

Match found!

Code explanation

• $string: This is the string that will be searched for a match.
• $pattern: This is the regular expression pattern that will be used to search for a match.
• preg_match(): This is the PHP function used to search for a match. It takes two parameters, the regular expression pattern and the string to search.
• /m: This is the modifier used to allow the pattern to match across multiple lines.

Helpful links

• PHP preg_match() Function
• Regular Expressions

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