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function.arsort.html
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function.arsort.html
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<HTML
><HEAD
><TITLE
>arsort</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.57"><LINK
REL="HOME"
TITLE="PHP Manual"
HREF="manual.html"><LINK
REL="UP"
TITLE="Array Functions"
HREF="ref.array.html"><LINK
REL="PREVIOUS"
TITLE="array_walk"
HREF="function.array-walk.html"><LINK
REL="NEXT"
TITLE="asort"
HREF="function.asort.html"><META
NAME="HTTP_EQUIV"
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
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.array-walk.html"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
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></TD
><TD
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ALIGN="right"
VALIGN="bottom"
><A
HREF="function.asort.html"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="function.arsort"
>arsort</A
></H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN5103"
></A
><P
> (PHP3 , PHP4 )</P
>arsort --
Sort an array in reverse order and maintain index association
</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN5106"
></A
><H2
>Description</H2
><DIV
CLASS="funcsynopsis"
><A
NAME="AEN5108"
></A
><P
></P
><P
><CODE
><CODE
CLASS="FUNCDEF"
>void <B
CLASS="function"
>arsort</B
></CODE
> (array array [, int
sort_flags])</CODE
></P
><P
></P
></DIV
><P
> This function sorts an array such that array indices maintain
their correlation with the array elements they are associated
with. This is used mainly when sorting associative arrays where
the actual element order is significant.
<TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN5118"
></A
><P
><B
>Example 1. <B
CLASS="function"
>Arsort()</B
> example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="programlisting"
> $fruits = array ("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple");
arsort ($fruits);
reset ($fruits);
while (list ($key, $val) = each ($fruits)) {
echo "$key = $val\n";
}
</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
><P
> This example would display:
</P
><P
> <DIV
CLASS="informalexample"
><A
NAME="AEN5124"
></A
><P
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="programlisting"
> fruits[a] = orange
fruits[d] = lemon
fruits[b] = banana
fruits[c] = apple
</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
>
</P
><P
> The fruits have been sorted in reverse alphabetical order, and
the index associated with each element has been maintained.
</P
><P
> You may modify the behavior of the sort using the optional
parameter <TT
CLASS="parameter"
><I
>sort_flags</I
></TT
>, for details
see <A
HREF="function.sort.html"
><B
CLASS="function"
>sort()</B
></A
>.
</P
><P
> See also: <A
HREF="function.asort.html"
><B
CLASS="function"
>asort()</B
></A
>, <A
HREF="function.rsort.html"
><B
CLASS="function"
>rsort()</B
></A
>,
<A
HREF="function.ksort.html"
><B
CLASS="function"
>ksort()</B
></A
>, and <A
HREF="function.sort.html"
><B
CLASS="function"
>sort()</B
></A
>.
</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="function.array-walk.html"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="manual.html"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="function.asort.html"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>array_walk</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ref.array.html"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>asort</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>