What is the performance of the PDO_ODBC connection pool?

What is the performance of the PDO_ODBC connection pool? I found a PDO_ODBC with its own connection pool. I wonder if this can solve the connection pool defect in PHP connection [this article comes from Internet connection (www.68idc.cn? ------ Solution -------------------- 1. Although php does not have a connection pool, it is not a defect because php provides an equivalent connection pool.

What is the performance of the PDO_ODBC connection pool? Only found a PDO_ODBC, built-in connection pool, do not know whether this can solve PHP without connection [this article from the Internet (http://www.68idc.cn)] connected to the pool of defects? ------ Solution -------------------- 1. Although php does not have a connection pool, it is not a defect because php provides an equivalent connection pool.

What is the performance of the PDO_ODBC connection pool?
Only found a PDO_ODBC, built-in connection pool, do not know whether this can solve PHP without connection [this article from the Internet (http://www.68idc.cn)] connected to the pool of defects?
------ Solution ----------------------
1. Although php does not have a connection pool, it is not a defect because php provides a persistent connection equivalent to the connection pool.
2. ODBC, JDBC, and other database connection components simplify the connection operations from applications to databases, but also shield some new functions of High-version databases.
2. Adding ODBC and JDBC to applications and databases as third-party software will obviously increase system overhead.