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examples.xml
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: cffb5f52894aa8a29109e3802e2257c56b51bcb6 Maintainer: takagi Status: ready -->
<!-- CREDITS: hirokawa,mumumu -->
<chapter xml:id="pgsql.examples" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
&reftitle.examples;
<section xml:id="pgsql.examples-basic">
<title>基本的な使用法</title>
<para>
この例では、PostgreSQL への接続・クエリの実行・結果の表示
そして切断の方法を説明します。
<example>
<title>PostgreSQL 拡張モジュールの概要</title>
<programlisting role="php">
<![CDATA[
<?php
// 接続し、データベースを選択する
$dbconn = pg_connect("host=localhost dbname=publishing user=www password=foo")
or die('Could not connect: ' . pg_last_error());
// SQL クエリを実行する
$query = 'SELECT * FROM authors';
$result = pg_query($query) or die('Query failed: ' . pg_last_error());
// 結果を HTML で表示する
echo "<table>\n";
while ($line = pg_fetch_array($result, null, PGSQL_ASSOC)) {
echo "\t<tr>\n";
foreach ($line as $col_value) {
echo "\t\t<td>$col_value</td>\n";
}
echo "\t</tr>\n";
}
echo "</table>\n";
// 結果セットを開放する
pg_free_result($result);
// 接続をクローズする
pg_close($dbconn);
?>
]]>
</programlisting>
</example>
</para>
</section>
<section xml:id="pgsql.examples-queries">
<title>基本的な使い方</title>
<para>
以下の例には、レガシーなMySQL関数に似た、ユーザー定義関数が含まれています。
<example>
<title>PostgreSQL のユーザー定義関数の例</title>
<programlisting role="php">
<![CDATA[
<?php
// この関数は、PostgreSQL 接続がデータベースにバインドしているので必要
// This function should be needed, since PostgreSQL connection binds database.
function pg_list_dbs($db)
{
assert(is_resource($db));
$query = '
SELECT
d.datname as "Name",
u.usename as "Owner",
pg_encoding_to_char(d.encoding) as "Encoding"
FROM
pg_database d LEFT JOIN pg_user u ON d.datdba = u.usesysid
ORDER BY 1;
';
return pg_query($db, $query);
}
// テーブルを一覧にする
function pg_list_tables($db)
{
assert(is_resource($db));
$query = "
SELECT
c.relname as \"Name\",
CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 's' THEN 'special' END as \"Type\",
u.usename as \"Owner\"
FROM
pg_class c LEFT JOIN pg_user u ON c.relowner = u.usesysid
WHERE
c.relkind IN ('r','v','S','')
AND c.relname !~ '^pg_'
ORDER BY 1;
";
return pg_query($db, $query);
}
// pg_meta_data() も参照ください。フィールド定義を配列で返します。
function pg_list_fields($db, $table)
{
assert(is_resource($db));
$query = "
SELECT
a.attname,
format_type(a.atttypid, a.atttypmod),
a.attnotnull,
a.atthasdef,
a.attnum
FROM
pg_class c,
pg_attribute a
WHERE
c.relname = '".$table."'
AND a.attnum > 0 AND a.attrelid = c.oid
ORDER BY a.attnum;
";
return pg_query($db, $query);
}
?>
]]>
</programlisting>
</example>
</para>
</section>
</chapter>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->