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<?xml version="1.0" encoding="utf-8"?>
<reference xml:id="class.pdo-pgsql" role="class" xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude">
<title>The Pdo\pgsql class</title>
<titleabbrev>Pdo\pgsql</titleabbrev>
<partintro>
<!-- {{{ ClassName intro -->
<section xml:id="pdo-pgsql.intro">
&reftitle.intro;
<simpara>
A <classname>PDO</classname> subclass representing a connection using
the PostgreSQL PDO driver.
</simpara>
<para>
This driver supports a dedicated SQL query parser for the PostgreSQL dialect.
It can handle the following:
<itemizedlist>
<listitem>
<simpara>
Single and double-quoted literals, with doubling as escaping mechanism
</simpara>
</listitem>
<listitem>
<simpara>
C-style “escape” string literals
</simpara>
</listitem>
<listitem>
<simpara>
Dollar-quoted string literals
</simpara>
</listitem>
<listitem>
<simpara>
Two-dashes and C-style comments (non-nested).
</simpara>
</listitem>
<listitem>
<simpara>
Support for <literal>??</literal> as escape sequence for the
<literal>?</literal> operator.
</simpara>
</listitem>
</itemizedlist>
</para>
</section>
<!-- }}} -->
<section xml:id="pdo-pgsql.synopsis">
&reftitle.classsynopsis;
<!-- {{{ Synopsis -->
<classsynopsis class="class">
<ooclass>
<classname>Pdo\Pgsql</classname>
</ooclass>
<ooclass>
<modifier>extends</modifier>
<classname>PDO</classname>
</ooclass>
<classsynopsisinfo role="comment">&InheritedConstants;</classsynopsisinfo>
<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.pdo')/db:partintro/db:section/db:classsynopsis/db:fieldsynopsis[preceding-sibling::db:classsynopsisinfo[1][@role='comment' and text()='&Constants;']]))">
<xi:fallback/>
</xi:include>
<classsynopsisinfo role="comment">&Constants;</classsynopsisinfo>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>const</modifier>
<type>int</type>
<varname linkend="pdo-pgsql.constants.attr-disable-prepares">Pdo\Pgsql::ATTR_DISABLE_PREPARES</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>const</modifier>
<type>int</type>
<varname linkend="pdo-pgsql.constants.attr-result-memory-size">Pdo\Pgsql::ATTR_RESULT_MEMORY_SIZE</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>const</modifier>
<type>int</type>
<varname linkend="pdo-pgsql.constants.transaction-idle">Pdo\Pgsql::TRANSACTION_IDLE</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>const</modifier>
<type>int</type>
<varname linkend="pdo-pgsql.constants.transaction-active">Pdo\Pgsql::TRANSACTION_ACTIVE</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>const</modifier>
<type>int</type>
<varname linkend="pdo-pgsql.constants.transaction-intrans">Pdo\Pgsql::TRANSACTION_INTRANS</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>const</modifier>
<type>int</type>
<varname linkend="pdo-pgsql.constants.transaction-inerror">Pdo\Pgsql::TRANSACTION_INERROR</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>const</modifier>
<type>int</type>
<varname linkend="pdo-pgsql.constants.transaction-unknown">Pdo\Pgsql::TRANSACTION_UNKNOWN</varname>
</fieldsynopsis>
<classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.pdo-pgsql')/db:refentry/db:refsect1[@role='description']/descendant::db:methodsynopsis[@role='Pdo\\Pgsql'])">
<xi:fallback/>
</xi:include>
<classsynopsisinfo role="comment">&InheritedMethods;</classsynopsisinfo>
<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.pdo')/db:refentry/db:refsect1[@role='description']/descendant::db:constructorsynopsis[@role='PDO'])">
<xi:fallback/>
</xi:include>
<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.pdo')/db:refentry/db:refsect1[@role='description']/descendant::db:methodsynopsis[@role='PDO'])">
<xi:fallback/>
</xi:include>
</classsynopsis>
<!-- }}} -->
</section>
<section xml:id="pdo-pgsql.constants">
&reftitle.constants;
<variablelist>
<varlistentry xml:id="pdo-pgsql.constants.attr-disable-prepares">
<term><constant>Pdo\Pgsql::ATTR_DISABLE_PREPARES</constant></term>
<listitem>
<simpara>
Send the query and the parameters to the server together in a single
call, avoiding the need to create a named prepared statement separately.
If the query is only going to be executed once this can reduce latency by
avoiding an unnecessary server round-trip.
</simpara>
</listitem>
</varlistentry>
<varlistentry xml:id="pdo-pgsql.constants.attr-result-memory-size">
<term><constant>Pdo\Pgsql::ATTR_RESULT_MEMORY_SIZE</constant></term>
<listitem>
<simpara>
Returns the amount of memory, in bytes, allocated to the specified
query result <classname>PDOStatement</classname> instance,
or &null; if no results exist before the query is executed.
</simpara>
</listitem>
</varlistentry>
<varlistentry xml:id="pdo-pgsql.constants.transaction-idle">
<term><constant>Pdo\Pgsql::TRANSACTION_IDLE</constant></term>
<listitem>
<simpara>
</simpara>
</listitem>
</varlistentry>
<varlistentry xml:id="pdo-pgsql.constants.transaction-active">
<term><constant>Pdo\Pgsql::TRANSACTION_ACTIVE</constant></term>
<listitem>
<simpara>
</simpara>
</listitem>
</varlistentry>
<varlistentry xml:id="pdo-pgsql.constants.transaction-intrans">
<term><constant>Pdo\Pgsql::TRANSACTION_INTRANS</constant></term>
<listitem>
<simpara>
</simpara>
</listitem>
</varlistentry>
<varlistentry xml:id="pdo-pgsql.constants.transaction-inerror">
<term><constant>Pdo\Pgsql::TRANSACTION_INERROR</constant></term>
<listitem>
<simpara>
</simpara>
</listitem>
</varlistentry>
<varlistentry xml:id="pdo-pgsql.constants.transaction-unknown">
<term><constant>Pdo\Pgsql::TRANSACTION_UNKNOWN</constant></term>
<listitem>
<simpara>
</simpara>
</listitem>
</varlistentry>
</variablelist>
</section>
</partintro>
&reference.pdo-pgsql.pdo.entities.pgsql;
</reference>
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