A question about smarty

Ask a smarty question and pass two arrays to the template. $ ports and $ type contain the subscript of the element $ type, now you need to display the $ type description corresponding to each element in $ ports & lt; {sectionname = wordloop = $ ports} & gt; & lt; {$ ports [word for a question about smarty.
Two arrays, $ ports and $ type, are passed to the template.
The $ ports element contains the subscript of the $ type element. The $ type description corresponding to each element in $ ports must be displayed.
<{Section name = word loop = $ ports}>
<{$ Ports [word]. comment}> <{$ ports [word]. valuetype}>
<{$ Type [$ aports [word]. valuetype]. descript}>


<{/Section}>

The separately displayed <{$ ports [word]. valuetype}> can be displayed normally, but the two arrays are used together.
<{$ Type [$ aports [word]. valuetype]. descript}>
The following error is reported.
Fatal error: Smarty error: [in client_info.htm line 120]: syntax error: unrecognized tag: $ type [$ ports [word]. valuetype]. descript (Smarty_Compiler.class.php, line 446) in E: \ xampp \ htdocs \ sydx \ include \ Smarty \ libs \ Smarty. class. php on line 1093

How can I solve this problem? thank you!

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<{$ Type [{$ aports [word]. valuetype}]. descript}>
Try this way
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Check whether your template file has any symbols missing. Try more.

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<{Section name = word loop = $ ports}>
<{$ Ports [word]. comment}> <{$ ports [word]. valuetype}>
<{$ Type [$ aports [word]. valuetype]. descript}>


<{/Section}>