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function.array-unique.html
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<HTML
><HEAD
><TITLE
>array_unique</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_splice"
HREF="function.array-splice.html"><LINK
REL="NEXT"
TITLE="array_unshift"
HREF="function.array-unshift.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
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><TH
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>Prev</A
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><HR
ALIGN="LEFT"
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><H1
><A
NAME="function.array-unique"
>array_unique</A
></H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN4975"
></A
><P
> (PHP4 >= 4.0.1)</P
>array_unique -- Removes duplicate values from an array</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN4978"
></A
><H2
>Description</H2
><DIV
CLASS="funcsynopsis"
><A
NAME="AEN4980"
></A
><P
></P
><P
><CODE
><CODE
CLASS="FUNCDEF"
>array <B
CLASS="function"
>array_unique</B
></CODE
> (array array)</CODE
></P
><P
></P
></DIV
><P
> <B
CLASS="function"
>Array_unique()</B
> takes input
<TT
CLASS="parameter"
><I
>array</I
></TT
> and returns a new array
without duplicate values.
Note that keys are preserved.
</P
><P
> <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN4990"
></A
><P
><B
>Example 1. <B
CLASS="function"
>Array_unique()</B
> example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="programlisting"
> $input = array ("a" => "green", "red", "b" => "green", "blue", "red");
$result = array_unique ($input);
</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
><P
> This makes <TT
CLASS="varname"
>$result</TT
> have <TT
CLASS="literal"
>array ("a" =>
"green", "red", "blue");</TT
>.
</P
></DIV
><DIV
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></TD
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>array_splice</TD
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VALIGN="top"
><A
HREF="ref.array.html"
>Up</A
></TD
><TD
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>array_unshift</TD
></TR
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></BODY
></HTML
>