WordPress\AiClientDependencies\Psr\Http\Message

MessageInterface::getHeaderLine │ public │ WP 1.0

Retrieves a comma-separated string of the values for a single header.

This method returns all of the header values of the given case-insensitive header name as a string concatenated together using a comma.

NOTE: Not all header values may be appropriately represented using comma concatenation. For such headers, use getHeader() instead and supply your own delimiter when concatenating.

If the header does not appear in the message, this method MUST return an empty string.

Method of the class: MessageInterface{}

No Hooks.

Returns

String. A string of values as provided for the given header

concatenated together using a comma. If the header does not appear in
the message, this method MUST return an empty string.

Usage

$MessageInterface = new MessageInterface();
$MessageInterface->getHeaderLine( $name ): string;
$name(string) (required)
Case-insensitive header field name.

MessageInterface::getHeaderLine() code WP 7.0

wp-includes/php-ai-client/third-party/Psr/Http/Message/MessageInterface.php 
public function getHeaderLine(string $name): string;