header_remove Remove previously set headers &reftitle.description; voidheader_remove stringname Removes an HTTP header previously set using header. &reftitle.parameters; name The header name to be removed. This parameter is case-insensitive. &reftitle.returnvalues; &return.void; &reftitle.examples; Unsetting specific header. ]]> &example.outputs.similar; Unsetting all previously set headers. ]]> &example.outputs.similar; &reftitle.notes; This function will remove all headers set by PHP, including cookies, session and the X-Powered-By headers. ¬e.network.header.sapi; &reftitle.seealso; header headers_sent