ifx_pconnect Open persistent Informix connection php函数


(PHP 4, PHP <=5.2.0)

ifx_pconnectOpen persistent Informix connection


resource ifx_pconnect ([ string $database [, string $userid [, string $password ]]] )

ifx_pconnect() acts very much like ifx_connect() with two major differences.

First, when connecting, the function would first try to find a (persistent) link that's already open with the same host, username and password. If one is found, an identifier for it will be returned instead of opening a new connection.

Second, the connection to the SQL server will not be closed when the execution of the script ends. Instead, the link will remain open for future use (ifx_close() will not close links established by ifx_pconnect()).

This type of links is therefore called 'persistent'.


All of the arguments are optional, and if they're missing, defaults are taken from values supplied in php.ini (ifx.default_host for the host (Informix libraries will use INFORMIXSERVER environment value if not defined), ifx.default_user for user, ifx.default_password for the password (none if not defined).


The database name, as a string.


The username, as a string.


The password, as a string.


Returns: valid Informix persistent link identifier on success, or FALSE on errors.


  • ifx_connect() - Open Informix server connection

ifx_prepare Prepare an SQL-statement for execution
ifx_query Send Informix query
ifx_textasvarchar Set the default text mode
ifx_update_blob Updates the content of the blob object
ifx_update_char Updates the content of the char object
ignore_user_abort Set whether a client disconnect should abort script execution
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