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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
- This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
- project.
-
- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; only version 2 of the License, dated June 1991.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-
-->
<refentry id="fn_strstr">
<refmeta>
<refentrytitle>strstr</refentrytitle>
<refmiscinfo>string</refmiscinfo>
</refmeta>
<refnamediv>
<refname>strstr</refname>
<refpurpose>substring search</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_strstr">
<funcprototype id="fproto_strstr">
<funcdef><function>strstr</function></funcdef>
<paramdef>in <parameter>str</parameter> string</paramdef>
<paramdef>in <parameter>sub</parameter> string</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_strstr">
<title>Description</title>
<para><function>strstr</function> performs a
substring search, returning a zero-based index pointing to
beginning of first occurrence of <parameter>sub</parameter> or
NULL if not found.</para></refsect1>
<refsect1 id="params_strstr">
<title>Parameters</title>
<refsect2><title>str</title>
<para>String to search from.</para>
</refsect2>
<refsect2><title>sub</title>
<para>Substring to search for.</para>
</refsect2>
</refsect1>
<refsect1 id="ret_strstr">
<title>Return Types</title>
<para>An <type>integer</type> zero-based index to first occurrence
of <parameter>sub</parameter>.</para>
</refsect1>
<!-- <refsect1 id="errors_strstr">
<title>Errors</title>
<table>
<title>Errors signalled by</title>
<tgroup cols="4">
<thead>
<row>
<entry>SQLState</entry>
<entry>Error Code</entry>
<entry>Error Text</entry>
<entry>Description</entry></row></thead>
<tbody>
<row>
<entry><errorcode></errorcode></entry>
<entry><errorcode></errorcode></entry>
<entry><errorname></errorname></entry>
<entry></entry>
</row>
</tbody>
</tgroup>
</table>
</refsect1> -->
<refsect1 id="examples_strstr">
<title>Examples</title>
<example id="ex_strstr"><title>Sample example</title>
<screen>strstr('AbracadabrA','abrA')
-> 7 (Found from the eighth character onwards)
strcasestr('AbracadabrA','abrA')
-> 0 (Found from the beginning of string)
</screen>
</example>
</refsect1>
<refsect1 id="seealso_strstr">
<title>See Also</title>
<para><link linkend="fn_strcasestr"><function>strcasestr</function></link>.</para>
</refsect1>
</refentry>
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