(PHP 5 >= 5.4.0, PHP 7)
http_response_code — Get or Set the HTTP response code
http_response_code ([ int $response_code ] ) : mixed
Gets or sets the HTTP response status code.
response_code
The optional response_code will set the response code.
If response_code is provided, then the previous status code will be returned. If response_code is not provided, then the current status code will be returned. Both of these values will default to a 200 status code if used in a web server environment.
false will be returned if response_code is not provided and it is not invoked in a web server environment (such as from a CLI application). true will be returned if response_code is provided and it is not invoked in a web server environment (but only when no previous response status has been set).
Example #1 Using http_response_code() in a web server environment
<?php // Get the current response code and set a new one var_dump(http_response_code(404)); // Get the new response code var_dump(http_response_code()); ?>
The above example will output:
int(200) int(404)
Example #2 Using http_response_code() in a CLI environment
<?php // Get the current default response code var_dump(http_response_code()); // Set a response code var_dump(http_response_code(201)); // Get the new response code var_dump(http_response_code()); ?>
The above example will output:
bool(false) bool(true) int(201)
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https://www.php.net/manual/en/function.http-response-code.php