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>array_intersect_ukey</H1
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NAME="AEN10820"
></A
><P
>    (PHP 5 &#62;= 5.1.0RC1)</P
>array_intersect_ukey&nbsp;--&nbsp;Computes the intersection of arrays using a callback function on the keys for comparison</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN10823"
></A
><H2
>Description</H2
>array <B
CLASS="methodname"
>array_intersect_ukey</B
> ( array array1, array array2 [, array ..., callback key_compare_func] )<BR
></BR
><P
>&#13;   <B
CLASS="function"
>array_intersect_ukey()</B
> returns an array
   containing all the values of <CODE
CLASS="parameter"
>array1</CODE
>
   which have matching keys that are present in all the arguments.
  </P
><P
>&#13;   This comparison is done by a user supplied callback function.
   It must return an integer less than, equal to, or greater than zero if the
   first key is considered to be respectively less than, equal to, or
   greater than the second.
  </P
><P
>&#13;   <TABLE
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><P
><B
>Exemplo 1. <B
CLASS="function"
>array_intersect_ukey()</B
> example</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">function </font><font color="#0000BB">key_compare_func</font><font color="#007700">(</font><font color="#0000BB">$key1</font><font color="#007700">, </font><font color="#0000BB">$key2</font><font color="#007700">)<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;if (</font><font color="#0000BB">$key1 </font><font color="#007700">== </font><font color="#0000BB">$key2</font><font color="#007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return </font><font color="#0000BB">0</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;else if (</font><font color="#0000BB">$key1 </font><font color="#007700">&gt; </font><font color="#0000BB">$key2</font><font color="#007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return </font><font color="#0000BB">1</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;else<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return -</font><font color="#0000BB">1</font><font color="#007700">;<br />}<br /><br /></font><font color="#0000BB">$array1 </font><font color="#007700">= array(</font><font color="#DD0000">'blue'&nbsp;&nbsp;</font><font color="#007700">=&gt; </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#DD0000">'red'&nbsp;&nbsp;</font><font color="#007700">=&gt; </font><font color="#0000BB">2</font><font color="#007700">, </font><font color="#DD0000">'green'&nbsp;&nbsp;</font><font color="#007700">=&gt; </font><font color="#0000BB">3</font><font color="#007700">, </font><font color="#DD0000">'purple' </font><font color="#007700">=&gt; </font><font color="#0000BB">4</font><font color="#007700">);<br /></font><font color="#0000BB">$array2 </font><font color="#007700">= array(</font><font color="#DD0000">'green' </font><font color="#007700">=&gt; </font><font color="#0000BB">5</font><font color="#007700">, </font><font color="#DD0000">'blue' </font><font color="#007700">=&gt; </font><font color="#0000BB">6</font><font color="#007700">, </font><font color="#DD0000">'yellow' </font><font color="#007700">=&gt; </font><font color="#0000BB">7</font><font color="#007700">, </font><font color="#DD0000">'cyan'&nbsp;&nbsp;&nbsp;</font><font color="#007700">=&gt; </font><font color="#0000BB">8</font><font color="#007700">);<br /><br /></font><font color="#0000BB">var_dump</font><font color="#007700">(</font><font color="#0000BB">array_intersect_ukey</font><font color="#007700">(</font><font color="#0000BB">$array1</font><font color="#007700">, </font><font color="#0000BB">$array2</font><font color="#007700">, </font><font color="#DD0000">'key_compare_func'</font><font color="#007700">));<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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></TABLE
><P
>O exemplo acima irá imprimir:</P
><TABLE
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><TR
><TD
><PRE
CLASS="screen"
>array(2) {
  ["blue"]=&#62;
  int(1)
  ["green"]=&#62;
  int(3)
}</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
  </P
><P
>&#13;   In our example you see that only the keys <TT
CLASS="literal"
>'blue'</TT
>
   and <TT
CLASS="literal"
>'green'</TT
> are present in both arrays and thus
   returned. Also notice that the values for the keys
   <TT
CLASS="literal"
>'blue'</TT
> and <TT
CLASS="literal"
>'green'</TT
> differ between
   the two arrays. A match still occurs because only the keys are checked.
   The values returned are those of <CODE
CLASS="parameter"
>array1</CODE
>.
  </P
><P
>&#13;   See also <A
HREF="function.array-diff.html"
><B
CLASS="function"
>array_diff()</B
></A
>,
   <A
HREF="function.array-udiff.html"
><B
CLASS="function"
>array_udiff()</B
></A
>
   <A
HREF="function.array-diff-assoc.html"
><B
CLASS="function"
>array_diff_assoc()</B
></A
>,
   <A
HREF="function.array-diff-uassoc.html"
><B
CLASS="function"
>array_diff_uassoc()</B
></A
>,
   <A
HREF="function.array-udiff-assoc.html"
><B
CLASS="function"
>array_udiff_assoc()</B
></A
>,
   <A
HREF="function.array-udiff-uassoc.html"
><B
CLASS="function"
>array_udiff_uassoc()</B
></A
>,
   <A
HREF="function.array-diff-key.html"
><B
CLASS="function"
>array_diff_key()</B
></A
>,
   <A
HREF="function.array-diff-ukey.html"
><B
CLASS="function"
>array_diff_ukey()</B
></A
>,
   <A
HREF="function.array-intersect.html"
><B
CLASS="function"
>array_intersect()</B
></A
>,
   <A
HREF="function.array-intersect-assoc.html"
><B
CLASS="function"
>array_intersect_assoc()</B
></A
>,
   <A
HREF="function.array-intersect-uassoc.html"
><B
CLASS="function"
>array_intersect_uassoc()</B
></A
> and
   <A
HREF="function.array-intersect-key.html"
><B
CLASS="function"
>array_intersect_key()</B
></A
>.
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