Transforms header string into an array.

Parameters

$headersstring|arrayrequired

The original headers. If a string is passed, it will be converted to an array. If an array is passed, then it is assumed to be raw header data with numeric keys with the headers as the values.
No headers must be passed that were already processed.

$urlstringoptional

The URL that was requested.

Default:''

Return

• response array
  • code int
    The response status code. Default 0.
  • message string
    The response message. Default empty.
    
  • newheaders array
    The processed header data as a multidimensional array.
  • cookies WP_Http_Cookie[]
    If the original headers contain the 'Set-Cookie' key, an array containing WP_Http_Cookie objects is returned.

  Source

  public static function processHeaders( $headers, $url = '' ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
  	// Split headers, one per array element.
  	if ( is_string( $headers ) ) {
  		// Tolerate line terminator: CRLF = LF (RFC 2616 19.3).
  		$headers = str_replace( "\r\n", "\n", $headers );
  		/*
  		 * Unfold folded header fields. LWS = [CRLF] 1*( SP | HT ) <US-ASCII SP, space (32)>,
  		 * <US-ASCII HT, horizontal-tab (9)> (RFC 2616 2.2).
  		 */
  		$headers = preg_replace( '/\n[ \t]/', ' ', $headers );
  		// Create the headers array.
  		$headers = explode( "\n", $headers );
  	}
  
  	$response = array(
  		'code'    => 0,
  		'message' => '',
  	);
  
  	/*
  	 * If a redirection has taken place, The headers for each page request may have been passed.
  	 * In this case, determine the final HTTP header and parse from there.
  	 */
  	for ( $i = count( $headers ) - 1; $i >= 0; $i-- ) {
  		if ( ! empty( $headers[ $i ] ) && ! str_contains( $headers[ $i ], ':' ) ) {
  			$headers = array_splice( $headers, $i );
  			break;
  		}
  	}
  
  	$cookies    = array();
  	$newheaders = array();
  	foreach ( (array) $headers as $tempheader ) {
  		if ( empty( $tempheader ) ) {
  			continue;
  		}
  
  		if ( ! str_contains( $tempheader, ':' ) ) {
  			$stack   = explode( ' ', $tempheader, 3 );
  			$stack[] = '';
  			list( , $response['code'], $response['message']) = $stack;
  			continue;
  		}
  
  		list($key, $value) = explode( ':', $tempheader, 2 );
  
  		$key   = strtolower( $key );
  		$value = trim( $value );
  
  		if ( isset( $newheaders[ $key ] ) ) {
  			if ( ! is_array( $newheaders[ $key ] ) ) {
  				$newheaders[ $key ] = array( $newheaders[ $key ] );
  			}
  			$newheaders[ $key ][] = $value;
  		} else {
  			$newheaders[ $key ] = $value;
  		}
  		if ( 'set-cookie' === $key ) {
  			$cookies[] = new WP_Http_Cookie( $value, $url );
  		}
  	}
  
  	// Cast the Response Code to an int.
  	$response['code'] = (int) $response['code'];
  
  	return array(
  		'response' => $response,
  		'headers'  => $newheaders,
  		'cookies'  => $cookies,
  	);
  }
  

  View all references View on Trac View on GitHub

  Changelog

  Version	Description
  2.7.0	Introduced.

  User Contributed Notes

  You must log in before being able to contribute a note or feedback.