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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 296385 $ -->
<refentry xml:id="pdo-4d.examples" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>Examples with PDO_4D</refname>
<refpurpose>Examples PDO_4D</refpurpose>
</refnamediv>
<refsect1 role="description">
<para>
This basic example show how to connect, execute a query,
read data and disconnect from a 4D SQL server.
<example>
<title>Basic example with PDO_4D</title>
<programlisting role="php">
<![CDATA[
<?php
$dsn = '4D:host=localhost;charset=UTF-8';
$user = 'test';
$pass = 'test';
// Connection to the 4D SQL server
$db = new PDO($dsn, $user, $pass);
try {
$db->exec('CREATE TABLE test(id varCHAR(1) NOT NULL, val VARCHAR(10))');
} catch (PDOException $e) {
die("Erreur 4D : " . $e->getMessage());
}
$db->exec("INSERT INTO test VALUES('A', 'A')");
$db->exec("INSERT INTO test VALUES('B', 'A')");
$db->exec("INSERT INTO test VALUES('C', 'C')");
$stmt = $db->prepare('SELECT id, val from test');
$stmt->execute();
print_r($stmt->fetchAll());
unset($stmt);
unset($db);
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
Array
(
[0] => Array
(
[ID] => A
[0] => A
[VAL] => B
[1] => B
)
[1] => Array
(
[ID] => C
[0] => C
[VAL] => D
[1] => D
)
[2] => Array
(
[ID] => E
[0] => E
[VAL] => F
[1] => F
)
)
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="description">
<para>
This example shows how to execute a query in 4D language,
and how to read the result through PDO_4D.
<example>
<title>Accessing 4D language from pdo_4d</title>
<para>
Set up a 4D method, called <literal>method</literal>. Make sure
in the method properties that the option
<literal>Available via SQL</literal> is checked. The 4D code
is the following.
</para>
<programlisting role="4d">
<![CDATA[
C_TEXTE($0)
$0:=Version application(*);
]]>
</programlisting>
<para>
The PHP code to use the above 4D method is :
</para>
<programlisting role="php">
<![CDATA[
<?php
$dsn = '4D:host=localhost;charset=UTF-8';
$user = 'test';
$pass = 'test';
// Connection to the 4D server
$db = new PDO($dsn, $user, $pass);
$stmt = $db->prepare('SELECT {FN method() AS VARCHAR } FROM _USER_SCHEMAS LIMIT 1');
$stmt->execute();
print_r($stmt->fetchAll());
unset($stmt);
unset($db);
?>]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
(
[0] => Array
(
[<expression>] => F0011140
[0] => F0011140
)
)
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="description">
<para>
<example>
<title>Escaping 4D table names</title>
<para>
This examples illustrates how to escape characters in a
4D SQL query.
</para>
<programlisting role="php">
<![CDATA[
<?php
$dsn = '4D:host=localhost;charset=UTF-8';
$user = 'test';
$pass = 'test';
// Connection to 4D server 4D
$db = new PDO($dsn, $user, $pass);
$objects = array('[',']','[]','][','[[',']]','[[[',']]]','TBL ]]32[23');
foreach($objects as $id => $object) {
$object = str_replace(']',']]', $object);
print "$object\n";
$db->exec('CREATE TABLE IF NOT EXISTS ['.$object.'](['.$object.'] FLOAT)');
$req = "INSERT INTO [$object] ([$object]) VALUES ($id);";
$db->query($req);
$q = $db->prepare("SELECT [$object] FROM [$object]");
$q->execute();
$x[] = $q->fetch(PDO::FETCH_NUM);
$db->exec('DROP TABLE ['.$object.'];');
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
[
]]
[]]
]][
[[
]]]]
[[[
]]]]]]
TBL ]]]]32[23
]]>
</screen>
</example>
</para>
</refsect1>
</refentry>
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sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
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vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
|
