Why is a fatal error in PHP returned to a 200 state

Turn off the error prompt and return to the 500 status.

But whenever the error prompts, he returns 200 regardless of the error. It's bad, it's hard to find the problem

Master, how to display the error message, but also in the wrong time to return 500 status
Rather than 200 states

Reply to discussion (solution)

HTTP 500 is a server rejection response. There is no explanation for the cause of the error, so it's unfriendly.
When PHP error display is turned on, the error message can be sent with the text, so it is HTTP 200
The error message is mixed in the body, although it is unsightly, but indicative is clear

500 is the response of the server, after the error prompt is the PHP prompt error, but the server processing PHP script is successful, so it is 200 status

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