php_output_op      56 main/output.c  static inline void php_output_op(int op, const char *str, size_t len TSRMLS_DC);
php_output_op     270 main/output.c  		php_output_op(PHP_OUTPUT_HANDLER_WRITE, str, len TSRMLS_CC);
php_output_op     303 main/output.c  		php_output_op(PHP_OUTPUT_HANDLER_FLUSH, NULL, 0 TSRMLS_CC);