Add missing account PHP code

Author: FileEX

elements/Account/account.yaml

@@ -6,5 +6,42 @@ description: |
 
   When a user logs in or out, the account object assigned to them will change. As such, you must not assume that the account attached to a client remains constant during their session.
 
-  PHP code to check password hashes from the MTA server database is [here](/Account_PHP). 
+  PHP code to check password hashes from the MTA server database is
+
+  <details>
+    <summary>Here</summary>
+    This php function will return true if the password matches the hash from the accounts database.
+
+    ```php
+    function passwordMatch( $plain, $hash )
+    {
+      //-- Empty passwords never match
+      if ( $plain == "" || $hash == "" )
+        return false;
+
+      if ( strlen($hash) == 64 + 32 + 1 )
+      {
+        //-- SHA256 + type + salt
+        $strSha256 = substr( $hash, 0, 64 );
+        $strType = substr( $hash, 64, 1 );
+        $strSalt = substr( $hash, 65, 32 );
+
+        //-- Password hash was generated from MD5, so do the same thing for the test
+        if ( $strType == "1" )
+          $plain = strtoupper(md5($plain));
+
+        $strPasswordHashed = strtoupper(hash( "sha256", $strSalt . $plain ));
+        return $strPasswordHashed == $strSha256;
+      }
+      else
+      if ( strlen($hash) == 32 )
+      {
+        //-- MD5
+        return strtoupper(md5($plain)) == $hash;
+      }
+      return false;
+    }
+    ```
+
+  </details>