public function isLinkDead( $url ) {
		$deadVal = $this->areLinksDead( [ $url ] );
		$deadVal = $deadVal[$url];

		return $deadVal;
	}
public function isLinkDead( $url ) {
		$deadVal = $this->areLinksDead( [ $url ] );
		$deadVal = $deadVal[$url];

		return $deadVal;
	}
public function isLinkDead ( $ url ) { $ deadVal = $ this -> areLinksDead ( [ $ url ] ) ; $ deadVal = $ deadVal [ $ url ] ; return $ deadVal ; }
Check if a single URL is dead by performing a curl request

@param string $url URL to check
@return bool|null Returns null if curl is unable to initialize.
Otherwise returns true (dead) or false (alive).
Check if a single URL is dead by performing a curl request