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>array_udiff_uassoc</H1
><DIV
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><A
NAME="AEN12149"
></A
><P
>    (PHP 5)</P
>array_udiff_uassoc&nbsp;--&nbsp;带索引检查计算数组的差集，用回调函数比较数据和索引</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN12152"
></A
><H2
>说明</H2
>array <B
CLASS="methodname"
>array_udiff_uassoc</B
> ( array array1, array array2 [, array ..., callback data_compare_func, callback key_compare_func] )<BR
></BR
><P
>&#13;   <B
CLASS="function"
>array_udiff_uassoc()</B
> 返回一个数组，该数组包括了所有在
   <CODE
CLASS="parameter"
>array1</CODE
> 中但是不在任何其它参数数组中的值。注意和
   <A
HREF="function.array-diff.html"
><B
CLASS="function"
>array_diff()</B
></A
> 与 <A
HREF="function.array-udiff.html"
><B
CLASS="function"
>array_udiff()</B
></A
>
   不同的是键名也用于比较。数组数据的比较是用用户提供的回调函数
   <CODE
CLASS="parameter"
>data_compare_func</CODE
> 进行的。在此方面和
   <A
HREF="function.array-diff-assoc.html"
><B
CLASS="function"
>array_diff_assoc()</B
></A
>
   的行为正好相反，后者是用内部函数进行比较的。对键名（索引）的检查也是由回调函数
   <CODE
CLASS="parameter"
>key_compare_func</CODE
> 进行的。这和
   <A
HREF="function.array-udiff-assoc.html"
><B
CLASS="function"
>array_udiff_assoc()</B
></A
> 的行为不同，后者是用内部函数比较索引的。
  </P
><P
>&#13;   <TABLE
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><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN12182"
></A
><P
><B
>例 1. <B
CLASS="function"
>array_udiff_uassoc()</B
> 例子</B
></P
><TABLE
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">class </font><font color="#0000BB">cr </font><font color="#007700">{<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">private $priv_member</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;function </font><font color="#0000BB">cr</font><font color="#007700">(</font><font color="#0000BB">$val</font><font color="#007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$this</font><font color="#007700">-&gt;</font><font color="#0000BB">priv_member </font><font color="#007700">= </font><font color="#0000BB">$val</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;function </font><font color="#0000BB">comp_func_cr</font><font color="#007700">(</font><font color="#0000BB">$a</font><font color="#007700">, </font><font color="#0000BB">$b</font><font color="#007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (</font><font color="#0000BB">$a</font><font color="#007700">-&gt;</font><font color="#0000BB">priv_member </font><font color="#007700">=== </font><font color="#0000BB">$b</font><font color="#007700">-&gt;</font><font color="#0000BB">priv_member</font><font color="#007700">) return </font><font color="#0000BB">0</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return (</font><font color="#0000BB">$a</font><font color="#007700">-&gt;</font><font color="#0000BB">priv_member </font><font color="#007700">&gt; </font><font color="#0000BB">$b</font><font color="#007700">-&gt;</font><font color="#0000BB">priv_member</font><font color="#007700">)? </font><font color="#0000BB">1</font><font color="#007700">:-</font><font color="#0000BB">1</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;function </font><font color="#0000BB">comp_func_key</font><font color="#007700">(</font><font color="#0000BB">$a</font><font color="#007700">, </font><font color="#0000BB">$b</font><font color="#007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (</font><font color="#0000BB">$a </font><font color="#007700">=== </font><font color="#0000BB">$b</font><font color="#007700">) return </font><font color="#0000BB">0</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return (</font><font color="#0000BB">$a </font><font color="#007700">&gt; </font><font color="#0000BB">$b</font><font color="#007700">)? </font><font color="#0000BB">1</font><font color="#007700">:-</font><font color="#0000BB">1</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /></font><font color="#0000BB">$a </font><font color="#007700">= array(</font><font color="#DD0000">"0.1" </font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(</font><font color="#0000BB">9</font><font color="#007700">), </font><font color="#DD0000">"0.5" </font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(</font><font color="#0000BB">12</font><font color="#007700">), </font><font color="#0000BB">0 </font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(</font><font color="#0000BB">23</font><font color="#007700">), </font><font color="#0000BB">1</font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(</font><font color="#0000BB">4</font><font color="#007700">), </font><font color="#0000BB">2 </font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(-</font><font color="#0000BB">15</font><font color="#007700">),);<br /></font><font color="#0000BB">$b </font><font color="#007700">= array(</font><font color="#DD0000">"0.2" </font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(</font><font color="#0000BB">9</font><font color="#007700">), </font><font color="#DD0000">"0.5" </font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(</font><font color="#0000BB">22</font><font color="#007700">), </font><font color="#0000BB">0 </font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(</font><font color="#0000BB">3</font><font color="#007700">), </font><font color="#0000BB">1</font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(</font><font color="#0000BB">4</font><font color="#007700">), </font><font color="#0000BB">2 </font><font color="#007700">=&gt; new </font><font color="#0000BB">cr</font><font color="#007700">(-</font><font color="#0000BB">15</font><font color="#007700">),);<br /><br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">array_udiff_uassoc</font><font color="#007700">(</font><font color="#0000BB">$a</font><font color="#007700">, </font><font color="#0000BB">$b</font><font color="#007700">, array(</font><font color="#DD0000">"cr"</font><font color="#007700">, </font><font color="#DD0000">"comp_func_cr"</font><font color="#007700">), array(</font><font color="#DD0000">"cr"</font><font color="#007700">, </font><font color="#DD0000">"comp_func_key"</font><font color="#007700">));<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>上例将输出：</P
><TABLE
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><TD
><PRE
CLASS="screen"
>Array
(
    [0.1] =&#62; cr Object
        (
            [priv_member:private] =&#62; 9
        )

    [0.5] =&#62; cr Object
        (
            [priv_member:private] =&#62; 12
        )

    [0] =&#62; cr Object
        (
            [priv_member:private] =&#62; 23
        )
)</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
  </P
><P
>&#13;   在上例中键值对 <TT
CLASS="literal"
>"1" =&#62; new cr(4)</TT
>
   同时出现在两个数组中，因此不在本函数的输出中。要记住必须提供两个回调函数。
  </P
><P
>&#13;   此比较是通过用户提供的回调函数来进行的。如果认为第一个参数小于，等于，或大于第二个参数时必须分别返回一个小于零，等于零，或大于零的整数。
  </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
    注意本函数只检查了多维数组中的一维。当然，可以用
    <TT
CLASS="literal"
>array_udiff_uassoc($array1[0], $array2[0], "data_compare_func", "key_compare_func");</TT
>
    来检查更深的维度。
   </P
></BLOCKQUOTE
></DIV
><P
>&#13;   参见
   <A
HREF="function.array-diff.html"
><B
CLASS="function"
>array_diff()</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.html"
><B
CLASS="function"
>array_udiff()</B
></A
>，<A
HREF="function.array-udiff-assoc.html"
><B
CLASS="function"
>array_udiff_assoc()</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-uintersect.html"
><B
CLASS="function"
>array_uintersect()</B
></A
>，<A
HREF="function.array-uintersect-assoc.html"
><B
CLASS="function"
>array_uintersect_assoc()</B
></A
>
   和
   <A
HREF="function.array-uintersect-uassoc.html"
><B
CLASS="function"
>array_uintersect_uassoc()</B
></A
>。
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