PHP_FUNCTION(pg_lo_export)
{
	zval *pgsql_link = NULL;
	char *file_out, *oid_string, *end_ptr;
	int oid_strlen;
	int id = -1, name_len;
	long oid_long;
	Oid oid;
	PGconn *pgsql;
	int argc = ZEND_NUM_ARGS();

	/* allow string to handle large OID value correctly */
	if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC,
								 "rlp", &pgsql_link, &oid_long, &file_out, &name_len) == SUCCESS) {
		if (oid_long <= InvalidOid) {
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Invalid OID specified");
			RETURN_FALSE;
		}
		oid = (Oid)oid_long;
	}
	else if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC,
								 "rss", &pgsql_link, &oid_string, &oid_strlen, &file_out, &name_len) == SUCCESS) {
		oid = (Oid)strtoul(oid_string, &end_ptr, 10);
		if ((oid_string+oid_strlen) != end_ptr) {
			/* wrong integer format */
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Wrong OID value passed");
			RETURN_FALSE;
		}
	}
	else if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC,
									  "lp",  &oid_long, &file_out, &name_len) == SUCCESS) {
		if (oid_long <= InvalidOid) {
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Invalid OID specified");
			RETURN_FALSE;
		}
		oid = (Oid)oid_long;
		id = PGG(default_link);
		CHECK_DEFAULT_LINK(id);
	}
	else if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC,
								 "sp", &oid_string, &oid_strlen, &file_out, &name_len) == SUCCESS) {
		oid = (Oid)strtoul(oid_string, &end_ptr, 10);
		if ((oid_string+oid_strlen) != end_ptr) {
			/* wrong integer format */
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Wrong OID value passed");
			RETURN_FALSE;
		}
		id = PGG(default_link);
		CHECK_DEFAULT_LINK(id);
	}
	else if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC,
								 "spr", &oid_string, &oid_strlen, &file_out, &name_len, &pgsql_link) == SUCCESS) {
		oid = (Oid)strtoul(oid_string, &end_ptr, 10);
		if ((oid_string+oid_strlen) != end_ptr) {
			/* wrong integer format */
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Wrong OID value passed");
			RETURN_FALSE;
		}
	}
	else if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC,
									  "lpr", &oid_long, &file_out, &name_len, &pgsql_link) == SUCCESS) {
		php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Old API is used");
		if (oid_long <= InvalidOid) {
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Invalid OID specified");
			RETURN_FALSE;
		}
		oid = (Oid)oid_long;
	}
	else {
		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Requires 2 or 3 arguments");
		RETURN_FALSE;
	}
	
	if (php_check_open_basedir(file_out TSRMLS_CC)) {
		RETURN_FALSE;
	}

	if (pgsql_link == NULL && id == -1) {
		RETURN_FALSE;
	}

	ZEND_FETCH_RESOURCE2(pgsql, PGconn *, &pgsql_link, id, "PostgreSQL link", le_link, le_plink);

	if (lo_export(pgsql, oid, file_out) == -1) {
		RETURN_FALSE;
	}
	RETURN_TRUE;
}

Unknown