Sophie: php-manual-en-4.3.0-2mdk noarch

php-manual-en-4.3.0-2mdk.noarch.rpm

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>strpos</H1
><DIV
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><A
NAME="AEN91365"
></A
><P
>    (PHP 3, PHP 4 )</P
>strpos&nbsp;--&nbsp;
     Find position of first occurrence of a string
    </DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN91368"
></A
><H2
>Description</H2
>int <B
CLASS="methodname"
>strpos</B
> ( string haystack, string needle [, int offset])<BR
></BR
><P
>&#13;     Returns the numeric position of the first occurrence of
     <TT
CLASS="parameter"
><I
>needle</I
></TT
> in the
     <TT
CLASS="parameter"
><I
>haystack</I
></TT
> string.  Unlike the
     <A
HREF="function.strrpos.html"
><B
CLASS="function"
>strrpos()</B
></A
>, this function can take a full
     string as the <TT
CLASS="parameter"
><I
>needle</I
></TT
> parameter and the
     entire string will be used.
    </P
><P
>&#13;     If <TT
CLASS="parameter"
><I
>needle</I
></TT
> is not found, returns <TT
CLASS="constant"
><B
>FALSE</B
></TT
>.
     <DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Note: </B
>
       It is easy to mistake the return values for "character found at
       position 0" and "character not found".  Here's how to detect
       the difference:
       <DIV
CLASS="informalexample"
><A
NAME="AEN91392"
></A
><P
></P
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><PRE
CLASS="php"
>// in PHP 4.0b3 and newer:
$pos = strpos($mystring, "b");
if ($pos === false) { // note: three equal signs
    // not found...
}

// in versions older than 4.0b3:
$pos = strpos($mystring, "b");
if (!is_integer($pos)) {
    // not found...
}</PRE
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>
      </P
></BLOCKQUOTE
></DIV
>
    </P
><P
>&#13;     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
><P
>&#13;     The optional <TT
CLASS="parameter"
><I
>offset</I
></TT
> parameter allows you
     to specify which character in <TT
CLASS="parameter"
><I
>haystack</I
></TT
> to
     start searching. The position returned is still relative to the
     the beginning of <TT
CLASS="parameter"
><I
>haystack</I
></TT
>.
    </P
><P
>&#13;     See also <A
HREF="function.strrpos.html"
><B
CLASS="function"
>strrpos()</B
></A
>,
     <A
HREF="function.strrchr.html"
><B
CLASS="function"
>strrchr()</B
></A
>, <A
HREF="function.substr.html"
><B
CLASS="function"
>substr()</B
></A
>,
     <A
HREF="function.stristr.html"
><B
CLASS="function"
>stristr()</B
></A
>, and <A
HREF="function.strstr.html"
><B
CLASS="function"
>strstr()</B
></A
>.
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