: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
declare (strict_types=1);
namespace YoastSEO_Vendor\GuzzleHttp\Psr7;
* Header related regular expressions (based on amphp/http package)
* Note: header delimiter (\r\n) is modified to \r?\n to accept line feed only delimiters for BC reasons.
* @see https://github.com/amphp/http/blob/v1.0.1/src/Rfc7230.php#L12-L15
* @license https://github.com/amphp/http/blob/v1.0.1/LICENSE
public const HEADER_REGEX = "(^([^()<>@,;:\\\"/[\\]?={}\x01- ]++):[ \t]*+((?:[ \t]*+[!-~\x80-\xff]++)*+)[ \t]*+\r?\n)m";
public const HEADER_FOLD_REGEX = "(\r?\n[ \t]++)";