Question about the bracket syntax in smarty

Error & nbsp; error & nbsp; {$ data [& quot; bank_data & quot;] [& quot; Arrangement & quot;] [& quot; id & quot;]} & nbsp; PHP (5.3.9) ERROR (E_USER_ERROR): File: brackets in smarty syntax

Error
{$ Data ["bank_data"] ["Arrangement"] ["id"]}

PHP (5.3.9) ERROR (E_USER_ERROR ):
File: Smarty. class. php
Line: 1092
Type: Smarty error: [in tke-g-admin_scopeofwork.tpl line 10]: syntax error: unrecognized tag: $ data ["bank_data"] ["Arrangement"] ["id"] (Smarty_Compiler.class.php, line 446)
Correct
{$ Data. bank_data.Arrangement.id}

Why is the first error?

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Smarty is so agreed! No. why?
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OK? Try this way:

PHP code

$ Arr = array ("a" => array (1, 2, 3 ), "B" => array ("c" => array ("d" => array ("e" => "Tom ", "f" => "BeiJing"); $ smarty-> assign ("A", $ arr); $ smarty-> display ("testTwo.html ");