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以php中的thinkphp 5.1为例，php容器连接mac中的pgsql数据库失败时，出现如下错误
[7] PDOException in Connection.php line 528
SQLSTATE[08006] [7] could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IP connections on port 5432?解决：以thinkphp 5.1为例，只需把 database.php 中的 hostname 改为 host.docker.internal 即可，然后，thinkphp 就能访问到数据库了。
return [// 数据库类型'type' => 'pgsql',// 服务器地址'hostname' => 'host.docker.internal'
];如果可以访问后，再出现 table_msg(unknown) 如下错误时
SQLSTATE[42883]: Undefined function: 7 ERROR: function table_msg(unknown) does not exist
LINE 1: ...fault as "default",fields_default as "extra" from table_msg(...
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.解决：在数据库中执行如下sql即可（因为 table_msg 函数需要用户自己定义）
CREATE OR REPLACE FUNCTION pgsql_type(a_type varchar) RETURNS varchar AS
$BODY$
DECLARE v_type varchar;
BEGIN IF a_type='int8' THEN v_type:='bigint'; ELSIF a_type='int4' THEN v_type:='integer'; ELSIF a_type='int2' THEN v_type:='smallint'; ELSIF a_type='bpchar' THEN v_type:='char'; ELSE v_type:=a_type; END IF; RETURN v_type;
END;
$BODY$
LANGUAGE PLPGSQL; CREATE TYPE "public"."tablestruct" AS ( "fields_key_name" varchar(100), "fields_name" VARCHAR(200), "fields_type" VARCHAR(20), "fields_length" BIGINT, "fields_not_null" VARCHAR(10), "fields_default" VARCHAR(500), "fields_comment" VARCHAR(1000)
); CREATE OR REPLACE FUNCTION "public"."table_msg" (a_schema_name varchar, a_table_name varchar) RETURNS SETOF "public"."tablestruct" AS
$body$
DECLARE v_ret tablestruct; v_oid oid; v_sql varchar; v_rec RECORD; v_key varchar;
BEGIN SELECT pg_class.oid INTO v_oid FROM pg_class INNER JOIN pg_namespace ON (pg_class.relnamespace = pg_namespace.oid AND lower(pg_namespace.nspname) = a_schema_name) WHERE pg_class.relname=a_table_name; IF NOT FOUND THEN RETURN; END IF; v_sql=' SELECT pg_attribute.attname AS fields_name, pg_attribute.attnum AS fields_index, pgsql_type(pg_type.typname::varchar) AS fields_type, pg_attribute.atttypmod-4 as fields_length, CASE WHEN pg_attribute.attnotnull THEN ''not null'' ELSE '''' END AS fields_not_null, pg_attrdef.adsrc AS fields_default, pg_description.description AS fields_comment FROM pg_attribute INNER JOIN pg_class ON pg_attribute.attrelid = pg_class.oid INNER JOIN pg_type ON pg_attribute.atttypid = pg_type.oid LEFT OUTER JOIN pg_attrdef ON pg_attrdef.adrelid = pg_class.oid AND pg_attrdef.adnum = pg_attribute.attnum LEFT OUTER JOIN pg_description ON pg_description.objoid = pg_class.oid AND pg_description.objsubid = pg_attribute.attnum WHERE pg_attribute.attnum > 0 AND attisdropped <> ''t'' AND pg_class.oid = ' || v_oid || ' ORDER BY pg_attribute.attnum' ; FOR v_rec IN EXECUTE v_sql LOOP v_ret.fields_name=v_rec.fields_name; v_ret.fields_type=v_rec.fields_type; IF v_rec.fields_length > 0 THEN v_ret.fields_length:=v_rec.fields_length; ELSE v_ret.fields_length:=NULL; END IF; v_ret.fields_not_null=v_rec.fields_not_null; v_ret.fields_default=v_rec.fields_default; v_ret.fields_comment=v_rec.fields_comment; SELECT constraint_name INTO v_key FROM information_schema.key_column_usage WHERE table_schema=a_schema_name AND table_name=a_table_name AND column_name=v_rec.fields_name; IF FOUND THEN v_ret.fields_key_name=v_key; ELSE v_ret.fields_key_name=''; END IF; RETURN NEXT v_ret; END LOOP; RETURN ;
END;
$body$
LANGUAGE 'plpgsql' VOLATILE CALLED ON NULL INPUT SECURITY INVOKER; COMMENT ON FUNCTION "public"."table_msg"(a_schema_name varchar, a_table_name varchar)
IS '获得表信息'; ---重载一个函数
CREATE OR REPLACE FUNCTION "public"."table_msg" (a_table_name varchar) RETURNS SETOF "public"."tablestruct" AS
$body$
DECLARE v_ret tablestruct;
BEGIN FOR v_ret IN SELECT * FROM table_msg('public',a_table_name) LOOP RETURN NEXT v_ret; END LOOP; RETURN;
END;
$body$
LANGUAGE 'plpgsql' VOLATILE CALLED ON NULL INPUT SECURITY INVOKER; COMMENT ON FUNCTION "public"."table_msg"(a_table_name varchar)
IS '获得表信息'; 这篇关于mac-docker-php容器连接mac中的pgsql数据库失败以及出现table_msg存错误时的解决方法的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
