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This article mainly introduces what the PHP PEAR DB class functions are, which are introduced in great detail and have certain reference value. Friends who are interested must finish reading them.

Description of PHP PEAR DB class function:

Connect (): database link function

Query (): SQL statement executes function

Execute (): the SQL statement executes the function, which is slightly different from the query () function.

SetFetchMode (): sets whether the returned recordset is a numerically indexed array or an associative array or object

NumRows (): returns the number of rows in the recordset

NumCols (): returns how many columns are in the recordset

Free (): release the recordset

Disconnect (): close the database link

AffectedRows (): number of rows of records affected by the operation

IsManip (): determines whether a query is a data processing or a data definition operation

Platform migration instructions:

Ideally, when porting to other types of database platforms, you only need to modify the DSN string parameters in the PHP PEAR DB class functions, but for some specific database-specific queries, you can only modify them when you migrate to other database platforms.

Other:

The DB directory stores all the relevant databases supported by PHP PEAR DB class functions, which can be seen by interested friends.

Through the above code example, we can use the PHP PEAR DB class to achieve different database access functions.

These are all the contents of the article "what are the PHP PEAR DB functions?" Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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