wikimedia / mediawiki

function wfNegotiateType( $cprefs, $sprefs ) {

	$combine = [];

	foreach ( array_keys( $sprefs ) as $type ) {

		$subType = explode( '/', $type )[1];

		if ( $subType != '*' ) {

			$ckey = mimeTypeMatch( $type, $cprefs );

			if ( $ckey ) {

				$combine[$type] = $sprefs[$type] * $cprefs[$ckey];

			}

		}

	}

	foreach ( array_keys( $cprefs ) as $type ) {

		$subType = explode( '/', $type )[1];

		}

	}

	foreach ( array_keys( $cprefs ) as $type ) {

		$subType = explode( '/', $type )[1];

		if ( $subType != '*' && !array_key_exists( $type, $sprefs ) ) {

			$skey = mimeTypeMatch( $type, $sprefs );

			if ( $skey ) {

				$combine[$type] = $sprefs[$skey] * $cprefs[$type];

			}

		}

	}

	$bestq = 0;

	$besttype = null;