php-regexHow to match a plus sign in PHP regex?

The plus sign + can be matched in PHP regex using the \+ escape sequence.

$string = 'This is a + sign';

if (preg_match('/\+/', $string)) {
    echo 'Match found';
}

Output example

Match found

The \+ escape sequence is used to match the literal + character in a regex pattern.

Code explanation

• \+: escape sequence used to match the literal + character in a regex pattern

Helpful links

• PHP Regular Expression Syntax

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