Working (mostly) to grab summoner, league and icon.

leagueapi.class.php

<?php
  class LeagueAW{
		const $APIKEY = "your key here";
		private $api = [
			"getSummoner" => "https://%s.api.pvp.net/api/lol/%s/v1.4/summoner/by-name/%s?api_key=" . $this->APIKEY,
			"getLeague" => "https://%s.api.pvp.net/api/lol/%s/v2.5/league/by-summoner/%s/entry?api_key=" . $this->APIKEY,
			"getIcon" => "http://ddragon.leagueoflegends.com/cdn/6.20.1/img/profileicon/%d.png"
		];
		private $current;
		private $league;
		public function __construct($r, $b){
			/* region , summoner */
			$summoner = strtolower($b);
			
			$region = strtolower($r);
			$getSummoner = file_get_contents( sprintf($this->api["getSummoner"], $region, $region, $summoner ) );
			if($getSummoner){
				$results = json_decode($getSummoner);
				$getLeague = $this->getLeague($region, $results->$summoner->id);
				/*if(!$getLeague){
					$getLeague = $this->getLeague($region, $results->$summoner->id);
				}*/
				$summID = $results->$summoner->id;
				$json = json_decode($getLeague, true);
				// there is a decent amount more information, however I only needed this.
				$current = [
					"icon_url" => "//ddragon.leagueoflegends.com/cdn/6.20.1/img/profileicon/" . $results->$summoner->profileIconId . ".png",
					"summonerID" => $results->$summoner->id,
					"summoner" => $results->$summoner->name,
					"summonerLevel" => $results->$summoner->summonerLevel,
					"region" => $region,
					"league" => [
						"tier" => $json[$summID][0]["tier"],
						"lp" => $json[$summID][0]["entries"][0]["leaguePoints"],
						"isInactive" => $json[$summID][0]["entries"][0]["isInactive"]
					]
				];
				$this->current = $current;
			}else{
				$current = [
					"icon_url" => "//ddragon.leagueoflegends.com/cdn/6.20.1/img/profileicon/" . $results->$summoner->profileIconId . ".png",
					"summonerID" => "",
					"summoner" => "Error!",
					"summonerLevel" => "",
					"region" => "N/A",
					"league" => ""
				];
			}
		}
		public function debug(){
			print_r($this->current);
			echo "<hr>";
			print_r($this->leagueResponse);
		}
		public function getLeague($region, $summonerID){
			$league = file_get_contents( sprintf($this->api["getLeague"], $region, $region, $summonerID) );
			$this->leagueHTTP = preg_match('|HTTP/\d\.\d\s+(\d+)\s+.*|', $http_response_header[0], $this->leagueResponse);
			if($this->leagueResponse[1] == "200"){
				return $league;
			}elseif($this->leagueResponse[1] == "400"){
				return "No league found for summonerID " . $summonerID;
			}else{
				return 'An unknown error has occurred';
			}
			/**
			For some reason the league API tends to be a 50/50 success rate, hence the 'unknown' error.
			*/
		}

		public function display(){
			// will display a bootstrap 'rectangular box thing' showing data.
			$opts = $this->current;
			if($this->leagueResponse[1] == "200"){
				if($opts["league"]["isInactive"] == false){
					$active = "False";
				}else{
					$active = "True";
				}
				$league = '<p>Current League: <strong>'.ucfirst(strtolower($opts["league"]["tier"])).'</strong></p><p>LP: '.$opts["league"]["lp"] . '</p><p>Inactive: ' . $active . '</p>';
			}else{
				$league = "Not currently in a league (".$this->leagueResponse[1].",".$opts["summonerID"].")";
				// Includes API HTTP code as well as summonerID (likely should not be included in final/production)
			}
			if($opts["summoner"] != ""){
				echo '
					<div data-summoner="'.$opts["summoner"].'" data-region="'.$opts["region"].'" class="media">
						<div class="media-left media-middle">
							<a>
								<img class="media-object img-thumbnail" src="'.$opts["icon_url"].'">
							</a>
						</div>
						<div class="media-body">
							<h4 class="media-heading"><strong>'.$opts["summoner"].'</strong> &mdash; <strong>'.strtoupper($opts["region"]).'</strong> <i onClick="refresh( $(this) );" style="cursor:pointer;" class="fa fa-refresh" aria-hidden="true"></i></h4>
							'.$league.'
						</div>
					</div>
				';
			}else{
				echo 'Error';
			}
		}
	}
?>