<HTML ><HEAD ><TITLE >strstr</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Manual" HREF="index.html"><LINK REL="UP" TITLE="String functions" HREF="ref.strings.html"><LINK REL="PREVIOUS" TITLE="strspn" HREF="function.strspn.html"><LINK REL="NEXT" TITLE="strtok" HREF="function.strtok.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.strspn.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.strtok.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.strstr" ></A >strstr</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN91517" ></A ><P > (PHP 3, PHP 4 )</P >strstr -- Find first occurrence of a string</DIV ><DIV CLASS="refsect1" ><A NAME="AEN91520" ></A ><H2 >Description</H2 >string <B CLASS="methodname" >strstr</B > ( string haystack, string needle)<BR ></BR ><P > Returns part of <TT CLASS="parameter" ><I >haystack</I ></TT > string from the first occurrence of <TT CLASS="parameter" ><I >needle</I ></TT > to the end of <TT CLASS="parameter" ><I >haystack</I ></TT >. </P ><P > If <TT CLASS="parameter" ><I >needle</I ></TT > is not found, returns <TT CLASS="constant" ><B >FALSE</B ></TT >. </P ><P > If <TT CLASS="parameter" ><I >needle</I ></TT > is not a string, it is converted to an integer and applied as the ordinal value of a character. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Note: </B > This function is case-sensitive. For case-insensitive searches, use <A HREF="function.stristr.html" ><B CLASS="function" >stristr()</B ></A >. </P ></BLOCKQUOTE ></DIV ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN91544" ></A ><P ><B >Example 1. <B CLASS="function" >strstr()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="php" >$email = 'user@example.com'; $domain = strstr($email, '@'); print $domain; // prints @example.com</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > <DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Note: </B > If you only want to determine if a particular <TT CLASS="parameter" ><I >needle</I ></TT > occurs within <TT CLASS="parameter" ><I >haystack</I ></TT >, use the faster and less memory intensive function <A HREF="function.strpos.html" ><B CLASS="function" >strpos()</B ></A > instead. </P ></BLOCKQUOTE ></DIV > </P ><P > See also <A HREF="function.ereg.html" ><B CLASS="function" >ereg()</B ></A >, <A HREF="function.preg-match.html" ><B CLASS="function" >preg_match()</B ></A >, <A HREF="function.strchr.html" ><B CLASS="function" >strchr()</B ></A >, <A HREF="function.stristr.html" ><B CLASS="function" >stristr()</B ></A >, <A HREF="function.strpos.html" ><B CLASS="function" >strpos()</B ></A >, <A HREF="function.strrchr.html" ><B CLASS="function" >strrchr()</B ></A >, and <A HREF="function.substr.html" ><B CLASS="function" >substr()</B ></A >. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.strspn.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.strtok.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >strspn</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.strings.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >strtok</TD ></TR ></TABLE ></DIV ></BODY ></HTML >