Get players bans on steam from steamID32, SteamID64 or Steam custom URL with steam API

GetPlayersBansSteam.php

<?php

// PHP >= 7
// You must add and enable CURL on your webserver

/**
 * GET_SteamAPI
 *
 * @param  string $endpoint http endpoint of Steam API
 * @param  string $steam_api_key your Steam API key
 * @param  string $parameters parameters for your request
 *
 * @return array body contains an array of requested data and http_code contain the http code of the request
 */
function GET_SteamAPI($endpoint, $steam_api_key, $parameterQuery = '')
{
	$curl = curl_init();
	curl_setopt_array($curl, array(
		CURLOPT_URL             => 'http://api.steampowered.com/' . $endpoint . '?key='. $steam_api_key . $parameterQuery,
		CURLOPT_RETURNTRANSFER  => true,
		CURLOPT_VERBOSE         => true,
		CURLOPT_HEADER          => true,
		CURLOPT_SSL_VERIFYPEER  => false
	));
	$output         = curl_exec($curl);
	$header_size    = curl_getinfo($curl, CURLINFO_HEADER_SIZE);
	$header         = substr($output, 0, $header_size);
	$body           = json_decode(substr($output, $header_size));
	$httpcode 	= curl_getinfo($curl, CURLINFO_HTTP_CODE);
    	curl_close($curl);
    
	return (array) array("body" => $body, "http_code" => $httpcode);
}

/**
 * steamID32ToSteamID64
 *
 * @param  string $steamID steamID32 of steam player
 *
 * @return string SteamID64
 */
function steamID32ToSteamID64($steamID)
{
	$parts = explode(':', str_replace('STEAM_', '', $steamID));
	$universe = (int)$parts[0];
	$universe = $universe == 0 ? 1 : $universe;
	$steamID = ($universe << 56) | (1 << 52) | (1 << 32) | ((int)$parts[2] << 1) | (int)$parts[1];
	return $steamID;
}

/**
 * steamCustomURLToSteamID64
 *
 * @param  string $steamCustomURL custom URL of steam player
 *
 * @return string SteamID64
 */
function steamCustomURLToSteamID64($steam_api_key, $steamCustomURL)
{
	return (array) GET_SteamAPI('ISteamUser/ResolveVanityURL/v0001/', $steam_api_key, '&vanityurl=' . $steamCustomURL);
}

/**
 * checkBan
 *
 * @param  string $steam_api_key
 * @param  string $steamids Comma-delimited list of SteamIDs
 *
 * @return array body contains an array of players and http_code contain the http code of the request
 */
function checkBan($steam_api_key, $steamids)
{
	return (array) GET_SteamAPI('ISteamUser/GetPlayerBans/v1/', $steam_api_key, '&steamids=' . $steamids);
}

/**
 * formatSteamIDs
 *
 * @param  string $steam_api_key
 *
 * @return string Comma-delimited list of SteamIDs
 */
function formatSteamIDs($steam_api_key, $steamIDs)
{
	$formattedSteamIDs = '';

	foreach ($steamIDs as $steamID) 
	{
		$formattedSteamIDs .= empty($formattedSteamIDs) ? "" : ",";
		
		switch($steamID)
		{
			// SteamID32
			case (preg_match("~^STEAM_0:[01]:[0-9]{7,8}$~", $steamID) ? true : false):
				$formattedSteamIDs .= steamID32ToSteamID64($steamID);
				break;
			// SteamID64
			case (preg_match("~^(https://steamcommunity\.com/profiles/[0-9/]{17})|([0-9]{17})$~", $steamID) ? true : false):
				$formattedSteamIDs .= $steamID;
				break;
			// SteamCustomURL
			case (preg_match("~^(https://steamcommunity\.com/id/[a-zA-Z0-9/]{1,})|([a-zA-Z0-9]{1,})$~", $steamID) ? true : false):
				$steamID = preg_match("~^https://steamcommunity\.com/id/[a-zA-Z0-9/]{1,}$~", $steamID) ? str_replace("https://steamcommunity.com/id/", "", substr($steamID, 0, -1)) : $steamID;
				$formattedSteamIDs .= steamCustomURLToSteamID64($steam_api_key, $steamID)["body"]->response->steamid;
				break;
			// Default
			default:
				$formattedSteamIDs .= $steamID;
				break;
		}
	}

	return (string) $formattedSteamIDs;
}

// [EXAMPLE BELOW]
// Scrappy test without try/catch etc... it's just a show case

// config (put your steam api key -> https://steamcommunity.com/dev/apikey)
$steam_api_key = "";

// Array of steamID
$steamIDs = [
	"STEAM_0:0:75536491",
	"https://steamcommunity.com/profiles/76561198111338710",
	"76561198111338710",
	"https://steamcommunity.com/id/LESMonster/",
	"LESMonster"
];

// Format steamID if needed
$formattedSteamIDs = formatSteamIDs($steam_api_key, $steamIDs);

// Get players bans
$result = checkBan($steam_api_key, $formattedSteamIDs);

foreach ($result["body"]->players as $player) 
{
	echo "STEAM ID : <span style='color: blue'>" . $player->SteamId . "</span><br>"
	. "Community Banned : " . $player->CommunityBanned . "<br>"
	. "VAC Banned : " . $player->VACBanned . "<br>"
	. "Number Of VAC Bans : <span style='color: red'>" . $player->NumberOfVACBans . "</span><br>"
	. "Days Since Last Ban : " . $player->DaysSinceLastBan . "<br>"
	. "Number Of Game Bans : " . $player->NumberOfGameBans . "<br>"
	. "Economy Ban : " . $player->EconomyBan . "<br>"
	. "<br>";
}