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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.8 $ -->
<refentry xml:id="function.oci-define-by-name" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>oci_define_by_name</refname>
<refpurpose>Uses a PHP variable for the define-step during a SELECT</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>oci_define_by_name</methodname>
<methodparam><type>resource</type><parameter>statement</parameter></methodparam>
<methodparam><type>string</type><parameter>column_name</parameter></methodparam>
<methodparam><type>mixed</type><parameter role="reference">variable</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>type</parameter></methodparam>
</methodsynopsis>
<para>
Defines PHP variables for fetches of SQL-Columns.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>statement</parameter></term>
<listitem>
<para>
A valid OCI statement identifier.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>column_name</parameter></term>
<listitem>
<para>
The column name. Must be uppercased.
</para>
<para>
Take into consideration that Oracle uses ALL-UPPERCASE column names,
whereby in your select you can also use lowercase.
If you define a variable that doesn't exists in your select statement,
no error will be issued.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>variable</parameter></term>
<listitem>
<para>
The PHP variable.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>type</parameter></term>
<listitem>
<para>
</para>
<para>
If you need to define an abstract datatype (LOB/ROWID/BFILE) you must
allocate it first using <function>oci_new_descriptor</function>. See
also the <function>oci_bind_by_name</function> function.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>oci_define_by_name</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
/* oci_define_by_name example - thies at thieso dot net (980219) */
$conn = oci_connect("scott", "tiger");
$stmt = oci_parse($conn, "SELECT empno, ename FROM emp");
/* the define MUST be done BEFORE oci_execute! */
oci_define_by_name($stmt, "EMPNO", $empno);
oci_define_by_name($stmt, "ENAME", $ename);
oci_execute($stmt);
while (oci_fetch($stmt)) {
echo "empno:" . $empno . "\n";
echo "ename:" . $ename . "\n";
}
oci_free_statement($stmt);
oci_close($conn);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<note>
<para>
In PHP versions before 5.0.0 you must use <function>ocidefinebyname</function> instead.
This name still can be used, it was left as alias of
<function>oci_define_by_name</function> for downwards compatability.
This, however, is deprecated and not recommended.
</para>
</note>
</refsect1>
</refentry>
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