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

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

<HTML
><HEAD
><TITLE
>in_array</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="Array Functions"
HREF="ref.array.html"><LINK
REL="PREVIOUS"
TITLE="extract"
HREF="function.extract.html"><LINK
REL="NEXT"
TITLE="key"
HREF="function.key.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.extract.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="function.key.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="function.in-array"
></A
>in_array</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN8775"
></A
><P
>    (PHP 4 )</P
>in_array&nbsp;--&nbsp;Return <TT
CLASS="constant"
><B
>TRUE</B
></TT
> if a value exists in an array</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN8779"
></A
><H2
>Description</H2
>bool <B
CLASS="methodname"
>in_array</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 <TT
CLASS="constant"
><B
>TRUE</B
></TT
>
     if it is found in the array, <TT
CLASS="constant"
><B
>FALSE</B
></TT
> otherwise.
    </P
><P
>&#13;     If the third parameter <TT
CLASS="parameter"
><I
>strict</I
></TT
> is set to
     <TT
CLASS="constant"
><B
>TRUE</B
></TT
> then the <B
CLASS="function"
>in_array()</B
> function
     will also check the <A
HREF="language.types.html"
>types</A
> of
     the <TT
CLASS="parameter"
><I
>needle</I
></TT
> in the <TT
CLASS="parameter"
><I
>haystack</I
></TT
>.
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Note: </B
>
      If <TT
CLASS="parameter"
><I
>needle</I
></TT
> is a string, the comparison is done in
      a case-sensitive manner.
     </P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Note: </B
>
      In PHP versions before 4.2.0 <TT
CLASS="parameter"
><I
>needle</I
></TT
> was not
      allowed to be an array.
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN8812"
></A
><P
><B
>Example 1. <B
CLASS="function"
>in_array()</B
> example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="php"
>$os = array ("Mac", "NT", "Irix", "Linux");
if (in_array ("Irix", $os)) {
    print "Got Irix";
}
if (in_array ("mac", $os)) {
    print "Got mac";
}</PRE
></TD
></TR
></TABLE
><P
>&#13;       The second condition fails because <B
CLASS="function"
>in_array()</B
>
       is case-sensitive, so the program above will display:
       <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="php"
>Got Irix</PRE
></TD
></TR
></TABLE
>
      </P
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN8820"
></A
><P
><B
>Example 2. <B
CLASS="function"
>in_array()</B
> with strict example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="php"
>&#60;?php
$a = array('1.10', 12.4, 1.13);

if (in_array('12.4', $a, TRUE))
    echo "'12.4' found with strict check\n";
if (in_array(1.13, $a, TRUE))
    echo "1.13 found with strict check\n";
?&#62;</PRE
></TD
></TR
></TABLE
><P
>&#13;       This will display:
       <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="php"
>1.13 found with strict check</PRE
></TD
></TR
></TABLE
>
      </P
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN8827"
></A
><P
><B
>Example 3. <B
CLASS="function"
>in_array()</B
> with an array as needle</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="php"
>&#60;?php
$a = array(array('p', 'h'), array('p', 'r'), 'o');

if (in_array(array ('p', 'h'), $a))
    echo "'ph' was found\n";
if (in_array(array ('f', 'i'), $a))
    echo "'fi' was found\n";
if (in_array('o', $a))
    echo "'o' was found\n";
?&#62;

// This will output:

'ph' was found
'o' was found</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     See also <A
HREF="function.array-search.html"
><B
CLASS="function"
>array_search()</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.extract.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.key.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>extract</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ref.array.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>key</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>