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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 330593 $ -->
<refentry xml:id="function.cubrid-lob2-read" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>cubrid_lob2_read</refname>
<refpurpose>Read from BLOB/CLOB data.</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</type><methodname>cubrid_lob2_read</methodname>
<methodparam><type>resource</type><parameter>lob_identifier</parameter></methodparam>
<methodparam><type>int</type><parameter>len</parameter></methodparam>
</methodsynopsis>
<para>
The <function>cubrid_lob2_read</function> function reads <parameter>len</parameter> bytes from the
LOB data and returns the bytes read.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>lob_identifier</parameter></term>
<listitem>
<para>Lob identifier as a result of <function>cubrid_lob2_new</function> or get from the result set.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>len</parameter></term>
<listitem>
<para>Length from buffer you want to read from the lob data.</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the contents as a string.
</para>
<para>
&false; when there is no more data.
</para>
<para>
NULL on failure.
</para>
<para>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title><function>cubrid_lob2_read</function> example 1</title>
<programlisting role="php">
<![CDATA[
<?php
// test_lob (id INT, contents CLOB)
$conn = cubrid_connect("localhost", 33000, "demodb", "public", "");
$req = cubrid_execute($conn, "select * from test_lob");
$row = cubrid_fetch_row($req, CUBRID_LOB);
print "position now is " . cubrid_lob2_tell($row[1]) . "\n";
cubrid_lob2_seek($row[1], 10, CUBRID_CURSOR_FIRST);
print "\nposition after moving farword is " . cubrid_lob2_tell($row[1]) . "\n";
$data = cubrid_lob2_read($row[1], 12);
print "\nposition after reading is " . cubrid_lob2_tell($row[1]) . "\n";
print $data . "\n";
cubrid_lob2_seek($row[1], 5, CUBRID_CURSOR_CURRENT);
print "\nposition after moving again is " . cubrid_lob2_tell($row[1]) . "\n";
$data = cubrid_lob2_read($row[1], 20);
print $data . "\n";
cubrid_disconnect($conn);
?>
]]>
</programlisting>
</example>
<example>
<title><function>cubrid_lob2_read</function> example 2</title>
<programlisting role="php">
<![CDATA[
<?php
// test_lob (id INT, contents CLOB)
$conn = cubrid_connect("localhost", 33000, "demodb", "dba", "");
$req = cubrid_execute($conn, "select * from test_lob");
$row = cubrid_fetch_row($req, CUBRID_LOB);
while (true) {
if ($data = cubrid_lob2_read($row[1], 1024)) {
print $data . "\n";
}
elseif ($data === false) {
print "There is no more data\n";
break;
}
else {
print "There must some errors\n";
break;
}
}
cubrid_disconnect($conn);
?>
]]>
</programlisting>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>cubrid_lob2_write</function></member>
<member><function>cubrid_lob2_seek</function></member>
<member><function>cubrid_lob2_seek64</function></member>
<member><function>cubrid_lob2_tell</function></member>
<member><function>cubrid_lob2_tell64</function></member>
<member><function>cubrid_lob2_size</function></member>
<member><function>cubrid_lob2_size64</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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