<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >array_intersect_assoc</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="Array 数组函数" HREF="ref.array.html"><LINK REL="PREVIOUS" TITLE="array_flip" HREF="function.array-flip.html"><LINK REL="NEXT" TITLE="array_intersect_key" HREF="function.array-intersect-key.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></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 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.array-flip.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" 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>array_intersect_assoc()</B > 例子</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$array1 </font><font color="#007700">= array(</font><font color="#DD0000">"a" </font><font color="#007700">=> </font><font color="#DD0000">"green"</font><font color="#007700">, </font><font color="#DD0000">"b" </font><font color="#007700">=> </font><font color="#DD0000">"brown"</font><font color="#007700">, </font><font color="#DD0000">"c" </font><font color="#007700">=> </font><font color="#DD0000">"blue"</font><font color="#007700">, </font><font color="#DD0000">"red"</font><font color="#007700">);<br /></font><font color="#0000BB">$array2 </font><font color="#007700">= array(</font><font color="#DD0000">"a" </font><font color="#007700">=> </font><font color="#DD0000">"green"</font><font color="#007700">, </font><font color="#DD0000">"yellow"</font><font color="#007700">, </font><font color="#DD0000">"red"</font><font color="#007700">);<br /></font><font color="#0000BB">$result_array </font><font color="#007700">= </font><font color="#0000BB">array_intersect_assoc</font><font color="#007700">(</font><font color="#0000BB">$array1</font><font color="#007700">, </font><font color="#0000BB">$array2</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P > $result_array 将是: </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >Array ( [a] => green )</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > 上面例子中可以看到只有键值对 <TT CLASS="literal" >"a" => "green"</TT > 在两个数组中都存在从而被返回。值 <TT CLASS="literal" >"red"</TT > 没有被返回是因为在 <CODE CLASS="varname" >$array1</CODE > 中它的键名是 <TT CLASS="literal" >0</TT > 而在 <CODE CLASS="varname" >$array2</CODE > 中 <TT CLASS="literal" >"red"</TT > 的键名是 <TT CLASS="literal" >1</TT >。 </P ><P > 键值对 <SPAN CLASS="emphasis" ><I CLASS="emphasis" >key => value</I ></SPAN > 中的两个值仅在 <TT CLASS="literal" >(string) $elem1 === (string) $elem2 </TT > 时被认为相等。也就是说使用了严格检查,字符串的表达必须相同。 </P ><P > 参见 <A HREF="function.array-intersect.html" ><B CLASS="function" >array_intersect()</B ></A >,<A HREF="function.array-uintersect-assoc.html" ><B CLASS="function" >array_uintersect_assoc()</B ></A >,<A HREF="function.array-intersect-uassoc.html" ><B CLASS="function" >array_intersect_uassoc()</B ></A >,<A HREF="function.array-uintersect-uassoc.html" ><B CLASS="function" >array_uintersect_uassoc()</B ></A >,<A HREF="function.array-diff.html" ><B CLASS="function" >array_diff()</B ></A > 和 <A HREF="function.array-diff-assoc.html" ><B CLASS="function" >array_diff_assoc()</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.array-flip.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" 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