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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<refentry xml:id="function.ifx-pconnect" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>ifx_pconnect</refname>
<refpurpose>Open persistent Informix connection</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>resource</type><methodname>ifx_pconnect</methodname>
<methodparam choice="opt"><type>string</type><parameter>database</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>userid</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>password</parameter></methodparam>
</methodsynopsis>
<para>
<function>ifx_pconnect</function> acts very much like
<function>ifx_connect</function> with two major differences.
</para>
<para>
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.
</para>
<para>
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 (<function>ifx_close</function> will not
close links established by <function>ifx_pconnect</function>).
</para>
<para>
This type of links is therefore called 'persistent'.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
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 <envar>INFORMIXSERVER</envar> environment
value if not defined), ifx.default_user for user, ifx.default_password for
the password (none if not defined).
</para>
<para>
<variablelist>
<varlistentry>
<term><parameter>database</parameter></term>
<listitem>
<para>
The database name, as a string.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>userid</parameter></term>
<listitem>
<para>
The username, as a string.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>password</parameter></term>
<listitem>
<para>
The password, as a string.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns: valid Informix persistent link identifier on success, or &false;
on errors.
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>ifx_connect</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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