Get form submitted data to array to background

How do I get the value from the form into a string and give it back to the background?

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How do I get the value from the form into a string and give it back to the background?

First, the GET request cannot be passed directly to the JSON, if it is POST , and PUT so on request body request, need to Content-Type set to appliaction/json , then body can plug array/object.

The name of the form is set to a uniform name, such as name[], so that the $_post[name received in the background of PHP] is an array

Cannot be uploaded into the background after stitching into a string?

Form label is method= "POST"
$_post[' P_name ' is an array

Format of the general storage database:
1. JSON
2. The array is converted or spelled into a string.
3, the string format of the direct storage array. (Phpcms do so)

Need to know how the specific business will be stored

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