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<?php http_response_code(403); /* setcookie() will add a response header on its own */ setcookie('foo', 'bar'); /* Define a custom response header This will be ignored by most clients */ header("X-Sample-Test: foo"); /* Specify plain text content in our response */ header('Content-type: text/plain'); /* What headers are going to be sent? */ var_dump(headers_list());

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