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

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

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>array_search</H1
><DIV
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><A
NAME="AEN8015"
></A
><P
>    (PHP 4 &#62;= 4.0.5)</P
>array_search&nbsp;--&nbsp;
     Searches the array for a given value and returns the
     corresponding key if successful
    </DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN8018"
></A
><H2
>Description</H2
>mixed <B
CLASS="methodname"
>array_search</B
> ( mixed needle, array haystack [, bool strict])<BR
></BR
><P
>&#13;     Searches <TT
CLASS="parameter"
><I
>haystack</I
></TT
> for
     <TT
CLASS="parameter"
><I
>needle</I
></TT
> and returns the key if it is found in
     the array, <TT
CLASS="constant"
><B
>FALSE</B
></TT
> otherwise.
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Note: </B
>
      Prior to PHP 4.2.0, <B
CLASS="function"
>array_search()</B
> returns
      <TT
CLASS="constant"
><B
>NULL</B
></TT
> on failure instead of <TT
CLASS="constant"
><B
>FALSE</B
></TT
>.
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     If the optional third parameter <TT
CLASS="parameter"
><I
>strict</I
></TT
> is set to
     <TT
CLASS="constant"
><B
>TRUE</B
></TT
> then the <B
CLASS="function"
>array_search()</B
>
     will also check the types of the <TT
CLASS="parameter"
><I
>needle</I
></TT
>
     in the <TT
CLASS="parameter"
><I
>haystack</I
></TT
>.
    </P
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><P
>This function may
return Boolean <TT
CLASS="constant"
><B
>FALSE</B
></TT
>, but may also return a non-Boolean value which
evaluates to <TT
CLASS="constant"
><B
>FALSE</B
></TT
>, such as <TT
CLASS="literal"
>0</TT
> or
"". Please read the section on <A
HREF="language.types.boolean.html"
>Booleans</A
> for more
information. Use <A
HREF="language.operators.comparison.html"
>the ===
operator</A
> for testing the return value of this
function.</P
></TD
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></DIV
><P
>&#13;     See also <A
HREF="function.array-keys.html"
><B
CLASS="function"
>array_keys()</B
></A
> and <A
HREF="function.in-array.html"
><B
CLASS="function"
>in_array()</B
></A
>.
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