Steam: Convert SteamID64 to SteamID using PHP

Question

有人将如何使用PHP / javascript将steamid64（例如：76561198074259974）转换为Steamid（STEAM_0：0：56997123）（我想在加载屏幕上显示Steamid，但不显示Steamid64）

Answer 1

Have a look at the code here for converting steamID to steamID64: https://forums.alliedmods.net/showthread.php?t=60899?t=60899

You can reverse it for converting steamID64 to steamID, for this the formula would be: (steamID64 - (76561197960265728 + (steamID64 % 2)))/2

This would give you the numbers after the second colon (:). If steamID64 is odd (steamID64 % 2) the number after the first colon would be 1 otherwise a 0.