Thinkphp Connecting PostgreSQL

PHP connection:

Remove the semicolon in front of extension = php_pgsql.dll in php.ini and set extension_dir to point to the ext folder under the php file.

Under normal circumstances, php can connect to postgres, but my error still occurs, prompting "Fatal error: Call to undefined function pg_connect ()", check the Apache log, "PHP Startup: Unable to load dynamic library '**** \\ PHP5 \\ ext \\ php_pdo_pgsql.dll ".

After searching, add LoadFile "*** / PHP5 / libpq.dll" to the configuration file httpd.conf in the conf folder in Apache, and the location can be behind LoadModule.

(*** is the php installation path)

 

 

The point is here: the table_msg function in thinkphp cannot be found, you need to manually create it:

Add custom function table_msg in PostgreSQL
Copy the following code to execute in the SQL manager:

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 ‘Get Table Information’;

--- Overload a function
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 ‘Get Table Information’;
 

 

Modify the BUG in ThinkPHP source code
Change line 41 of ThinkPHP \ Library \ Think \ Db \ Driver \ Pgsql.class.php to:

$ result = $ this-> query ('select fields_name as "field", fields_type as "type", fields_not_null as "null", fields_key_name as "key", fields_default as "default", fields_default as "extra" from table_msg (\ ''. $ tableName. '\'); ');
That is, add a single quote before and after $ tableName, (‘. $ TableName.‘) => (\ ‘‘. $ TableName. ’\’).

 

In addition to the above problem, I also found that M (‘table’)-> add () cannot normally return the primary key id value of newly added records.

thinkphp connect postgresql