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(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.


  • ifxus_close_slob
  • ifxus_create_slob
  • ifxus_free_slob
  • ifxus_open_slob
  • ifxus_read_slob
  • ifxus_seek_slob
  • ifxus_tell_slob
  • ifxus_write_slob
  • ifx_affected_rows
  • ifx_blobinfile_mode
  • ifx_byteasvarchar
  • ifx_close
  • ifx_connect
  • ifx_copy_blob
  • ifx_create_blob
  • ifx_create_char
  • ifx_do
  • ifx_error
  • ifx_errormsg
  • ifx_fetch_row
  • ifx_fieldproperties
  • ifx_fieldtypes
  • ifx_free_blob
  • ifx_free_char
  • ifx_free_result
  • ifx_getsqlca
  • ifx_get_blob
  • ifx_get_char
  • ifx_htmltbl_result
  • ifx_nullformat
  • ifx_num_fields
  • ifx_num_rows
  • ifx_pconnect
  • ifx_prepare
  • ifx_query
  • ifx_textasvarchar
  • ifx_update_blob
  • ifx_update_char
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