Appends a header value for the given header.

Parameters

$keystringrequired

Header name.

$valuestringrequired

Header value, or list of values.

Source

public function add_header( $key, $value ) {
	$key   = $this->canonicalize_header_name( $key );
	$value = (array) $value;

	if ( ! isset( $this->headers[ $key ] ) ) {
		$this->headers[ $key ] = array();
	}

	$this->headers[ $key ] = array_merge( $this->headers[ $key ], $value );
}

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