Why is Axios POST Data not Accessible in $_POST?

Axios Post Parameters Not Read by $_POST

You're posting data to a PHP endpoint using Axios and expecting to access it in $_POST or $_REQUEST. However, you're currently unable to detect it.

Originally, you used the default axios.post method, but switched to the code snippet provided due to a suspected header issue. Despite this change, the data remains undetectable.

Upon further investigation, you've realized that Axios is posting the data as a JSON object, which is accessible through file_get_contents("php://input"). Your goal is to send the data as a normal string instead.

Solution:

According to Axios's documentation, the default behavior is to serialize JavaScript objects to JSON for posting. However, PHP does not support JSON as a data format for populating $_POST. It only supports the formats natively supported by HTML forms:

• application/x-www-form-urlencoded
• multipart/form-data

To send data in the desired format, you have several options:

• Using the URLSearchParams API (in a browser)
• Using the qs library to encode data

Alternatively, you could customize your PHP configuration to handle JSON data as suggested in another related question.

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