php-doc-en/reference/oci8/functions/oci-fetch-object.xml
Christoph Michael Becker 4754397753 Revert revision 351727 from phpdoc/en/trunk:
Document false and null return types

Cf. <https://news-web.php.net/php.doc.cvs/17645>.


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2020-11-28 17:58:32 +00:00

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XML

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.oci-fetch-object" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>oci_fetch_object</refname>
<refpurpose>Returns the next row from a query as an object</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>object</type><methodname>oci_fetch_object</methodname>
<methodparam><type>resource</type><parameter>statement</parameter></methodparam>
</methodsynopsis>
<para>
Returns an object containing the next result-set row of a query.
Each attribute of the object corresponds to a column of the row.
This function is typically called in a loop until it returns
&false;, indicating no more rows exist.
</para>
&oci.datatypes;
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>statement</parameter></term>
<listitem>
&oci.arg.statement.id;
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns an object. Each attribute of the object corresponds to a
column of the row. If there are no more rows in
the <parameter>statement</parameter> then &false; is returned.
</para>
<para>
Any <literal>LOB</literal> columns are returned as LOB descriptors.
</para>
<para>
<literal>DATE</literal> columns are returned as strings formatted
to the current date format. The default format can be changed with
Oracle environment variables such as <literal>NLS_LANG</literal> or
by a previously executed <literal>ALTER SESSION SET
NLS_DATE_FORMAT</literal> command.
</para>
<para>
Oracle's default, non-case sensitive column names will have
uppercase attribute names. Case-sensitive column names will have
attribute names using the exact column case.
Use <function>var_dump</function> on the result object to verify
the appropriate case for attribute access.
</para>
<para>
Attribute values will be &null; for any <literal>NULL</literal>
data fields.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>oci_fetch_object</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
/*
Before running, create the table:
CREATE TABLE mytab (id NUMBER, description VARCHAR2(30));
INSERT INTO mytab (id, description) values (1, 'Fish and Chips');
COMMIT;
*/
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
if (!$conn) {
$e = oci_error();
trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}
$stid = oci_parse($conn, 'SELECT id, description FROM mytab');
oci_execute($stid);
while (($row = oci_fetch_object($stid)) != false) {
// Use upper case attribute names for each standard Oracle column
echo $row->ID . "<br>\n";
echo $row->DESCRIPTION . "<br>\n";
}
// Output is:
// 1
// Fish and Chips
oci_free_statement($stid);
oci_close($conn);
?>
]]>
</programlisting>
</example>
</para>
<para>
<example>
<title><function>oci_fetch_object</function> with case sensitive column names</title>
<programlisting role="php">
<![CDATA[
<?php
/*
Before running, create the table with a case sensitive column name:
CREATE TABLE mytab (id NUMBER, "MyDescription" VARCHAR2(30));
INSERT INTO mytab (id, "MyDescription") values (1, 'Iced Coffee');
COMMIT;
*/
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
if (!$conn) {
$e = oci_error();
trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}
$stid = oci_parse($conn, 'SELECT id, "MyDescription" FROM mytab');
oci_execute($stid);
while (($row = oci_fetch_object($stid)) != false) {
// Use upper case attribute names for each standard Oracle column
echo $row->ID . "<br>\n";
// Use the exact case for the case sensitive column name
echo $row->MyDescription . "<br>\n";
}
// Output is:
// 1
// Iced Coffee
oci_free_statement($stid);
oci_close($conn);
?>
]]>
</programlisting>
</example>
</para>
<para>
<example>
<title><function>oci_fetch_object</function> with LOBs</title>
<programlisting role="php">
<![CDATA[
<?php
/*
Before running, create the table:
CREATE TABLE mytab (id NUMBER, description CLOB);
INSERT INTO mytab (id, description) values (1, 'A very long string');
COMMIT;
*/
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
if (!$conn) {
$e = oci_error();
trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}
$stid = oci_parse($conn, 'SELECT id, description FROM mytab');
oci_execute($stid);
while (($row = oci_fetch_object($stid)) != false) {
echo $row->ID . "<br>\n";
// The following will output the first 11 bytes from DESCRIPTION
echo $row->DESCRIPTION->read(11) . "<br>\n";
}
// Output is:
// 1
// A very long
oci_free_statement($stid);
oci_close($conn);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>oci_fetch</function></member>
<member><function>oci_fetch_all</function></member>
<member><function>oci_fetch_assoc</function></member>
<member><function>oci_fetch_array</function></member>
<member><function>oci_fetch_row</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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