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魔王卷子
0468776023
* Update pg-insert.xml * Update pg-update.xml * Update pg-select.xml * Update pg-put-line.xml * Update pg-pconnect.xml * Update pg-pconnect.xml * Update pg-put-line.xml * Update pg-pconnect.xml * Update pg-put-line.xml * Update pg-select.xml
141 lines
3.9 KiB
XML
Executable File
141 lines
3.9 KiB
XML
Executable File
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: c2eca73ef79ebe78cebb34053e41b565af504c4f Maintainer: HonestQiao Status: ready -->
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<!-- CREDITS: mowangjuanzi -->
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<refentry xml:id="function.pg-put-line" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>pg_put_line</refname>
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<refpurpose>向 PostgreSQL 后端发送以 NULL 字符结尾的字符串</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>bool</type><methodname>pg_put_line</methodname>
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<methodparam choice="opt"><type>PgSql\Connection</type><parameter>connection</parameter></methodparam>
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<methodparam><type>string</type><parameter>data</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>pg_put_line</function> 向 PostgreSQL 后端服务器发送以 NULL 字符结尾的字符串。这需要与 PostgreSQL 的 <literal>COPY FROM</literal> 命令结合使用。
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</para>
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<para>
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<literal>COPY</literal> 是 PostgreSQL 支持的高速数据加载接口。数据在传入时不会解析且在单个事务中。
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</para>
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<para>
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使用原生 <function>pg_put_line</function> 命令的替代方法是使用 <function>pg_copy_from</function>。这是一个简单得多的接口。
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</para>
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<note>
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<para>
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应用程序必须明确地在 <function>pg_end_copy</function> 之前最后一行发送两个字符“\.”来向后端表明发送数据结束。
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</para>
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</note>
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<warning>
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<para>
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Use of the <function>pg_put_line</function> causes most large object
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operations, including <function>pg_lo_read</function> and
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<function>pg_lo_tell</function>, to subsequently fail. You can use
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<function>pg_copy_from</function> and <function>pg_copy_to</function>
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instead.
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</para>
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</warning>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>connection</parameter></term>
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<listitem>
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&pgsql.parameter.connection-with-unspecified-default;
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>data</parameter></term>
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<listitem>
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<para>
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要直接发送到 PostgreSQL 后端的一行文本。自动添加 <literal>NULL</literal> 终止符。
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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&return.success;
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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&pgsql.changelog.connection-object;
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title><function>pg_put_line</function> 示例</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = pg_pconnect("dbname=foo");
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pg_query($conn, "create table bar (a int4, b char(16), d float8)");
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pg_query($conn, "copy bar from stdin");
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pg_put_line($conn, "3\thello world\t4.5\n");
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pg_put_line($conn, "4\tgoodbye world\t7.11\n");
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pg_put_line($conn, "\\.\n");
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pg_end_copy($conn);
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?>
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]]>
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</programlisting>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>pg_end_copy</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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