post - Thinkphp I method to obtain variables?

I have been using thinkPHP’s I method to get the data from js ajax. The I method can receive the data passed by the post or get method, but today when receiving the array passed by js (use JSON.stringifyconversion) into a string), the data cannot be received using the I method, but other data can be received normally, and the data can be received normally using the $_POST[] method. What is the situation?

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I have been using thinkPHP’s I method to get the data from js ajax. The I method can receive the data passed by the post or get method, but today when receiving the array passed by js (use JSON.stringifyconversion into a string), the data cannot be received using the I method, but other data can be received normally, and the data can be received normally using the $_POST[] method. What is the situation?

I('post.data','','strip_tags');
Try filtering it

Try adding the filter parameters of the I method! For example, the json string you want to receive plus htmlspecialchars or strip_tags

<code>//试试看能不能接收到
I('json', '', 'htmlspecialchars');
I('json', '', 'strip_tags');</code>

I method will identify the data type of ajax. If the data type is get, then the default parameter of the I method is get.