Convert SteamID32, ID, Steam Name to Steam64

15th August 2013 Tags: php tutorials steam

STEAMID API

The Dota2 API generally gives you people's SteamIDs as 32-bit numbers aka accountid.

In order to convert from these 32-bit numbers to Steam Names, you must first convert between the 32-bit ID and 64-bit ID: On a system that supports up to 64-bit numbers you can do the following:

STEAMID64 - 76561197960265728 = STEAMID32
STEAMID32 + 76561197960265728 = STEAMID64
OR
STEAMID32 = The right-most 32-bits of STEAMID64
STEAMID64 = concatenate("00000001000100000000000000000001", STEAMID32);

On a system that only supports up to 32-bit numbers - it's trickier. You have to rely on the language's built-in "big number" functions (i.e. PHP's gmp extension: see below) Once you have the 64-bit ID, then you can use the GetPlayerSummaries call to get their detail!

Convert AccountID to SteamID64 in PHP


function A2S($id32) {

return bcadd($id32,'76561197960265728');

}

function S2A($id64) {

return bcsub($id64,'76561197960265728');

}

How to get someone's 64-bit ID to search with:

If you have their vanity URL, it should look like this:

http://steamcommunity.com/id// Using ResolveVanityURL (see http://wiki.teamfortress.com/wiki/WebAPI/ResolveVanityURL for more info), you can get the 64-bit ID as follows:

http://api.steampowered.com/ISteamUser/ResolveVanityURL/v0001/?key=&vanityurl=

If you have an ID url:

http://steamcommunity.com/profiles//
Then the is their 64-bit ID and you're done!

If you have just a Steam-Name:

You can use this to search the Dota2 API directly using the player_name option of GetMatchHistory
You can then find their 32-bit ID in the list and then convert it to a 64-bit ID as above.

I just added convert function
Source: http://dev.dota2.com/showthread.php?t=58317

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