write_function    665 Zend/zend.c    	zend_write = (zend_write_func_t) utility_functions->write_function;
write_function    548 Zend/zend.h    	int (*write_function)(const char *str, uint str_length);
write_function   2137 main/main.c    	zuf.write_function = php_output_wrapper;