function HeaderUtils::quote

Encodes a string as a quoted string, if necessary.

If a string contains characters not allowed by the "token" construct in the HTTP specification, it is backslash-escaped and enclosed in quotes to match the "quoted-string" construct.

1 call to HeaderUtils::quote()

HeaderUtils::toString in vendor/symfony/http-foundation/HeaderUtils.php

Joins an associative array into a string for use in an HTTP header.

File

vendor/symfony/http-foundation/HeaderUtils.php, line 132

Class

HeaderUtils

HTTP header utility functions.

Namespace

Symfony\Component\HttpFoundation

Code

public static function quote(string $s) : string {
    if (preg_match('/^[a-z0-9!#$%&\'*.^_`|~-]+$/i', $s)) {
        return $s;
    }
    return '"' . addcslashes($s, '"\\"') . '"';
}