php-regexHow to use the "s" modifier in PHP regex?

The "s" modifier in PHP regex is used to make the dot (.) character match all characters, including newline characters. This allows the regex to match across multiple lines.

Example code

$string = "This is a
multiline string";

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

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

Output example

Match found!

Code explanation

• $string: This is the string that the regex will be applied to.
• $pattern: This is the regex pattern that will be used to match against the string. The s modifier is used to make the dot (.) character match all characters, including newline characters.
• preg_match(): This is the PHP function used to apply the regex pattern to the string.

Helpful links

• PHP preg_match() Function
• Regular Expression Syntax

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