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php-manual-ro-20051028-1.noarch.rpm

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>simplexml_element-&#62;xpath</H1
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>    (no version information, might be only in CVS)</P
>simplexml_element-&#62;xpath&nbsp;--&nbsp;
     Runs Xpath query on XML data.
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>Description</H2
>array <B
CLASS="methodname"
>simplexml_element-&#62;xpath</B
> ( string path)<BR
></BR
><P
>&#13;     The <VAR
CLASS="literal"
>xpath</VAR
> method searches the SimpleXML node for
     children matching the <ACRONYM
CLASS="acronym"
>Xpath</ACRONYM
> <VAR
CLASS="parameter"
>path</VAR
>.
     It always returns an <A
HREF="language.types.array.html"
><B
CLASS="type"
>array</B
></A
> of simplexml_element objects.
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>Exemplu 1. Xpath</B
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$string </font><font color="#007700">= &lt;&lt;&lt;XML<br /></font><font color="#0000BB">&lt;a&gt;<br /> &lt;b&gt;<br />&nbsp;&nbsp;&lt;c&gt;text&lt;/c&gt;<br />&nbsp;&nbsp;&lt;c&gt;stuff&lt;/c&gt;<br /> &lt;/b&gt;<br /> &lt;d&gt;<br />&nbsp;&nbsp;&lt;c&gt;code&lt;/c&gt;<br /> &lt;/d&gt;<br />&lt;/a&gt;<br /></font><font color="#007700">XML;<br /><br /></font><font color="#0000BB">$xml </font><font color="#007700">= </font><font color="#0000BB">simplexml_load_string</font><font color="#007700">(</font><font color="#0000BB">$string</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* Search for &lt;a&gt;&lt;b&gt;&lt;c&gt; */<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$xml</font><font color="#007700">-&gt;</font><font color="#0000BB">xpath</font><font color="#007700">(</font><font color="#DD0000">'/a/b/c'</font><font color="#007700">);<br /><br />while(list( , </font><font color="#0000BB">$node</font><font color="#007700">) = </font><font color="#0000BB">each</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">'/a/b/c: '</font><font color="#007700">,</font><font color="#0000BB">$node</font><font color="#007700">,</font><font color="#DD0000">"\n"</font><font color="#007700">;<br />}<br /><br /></font><font color="#FF8000">/* Relative paths also work... */<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$xml</font><font color="#007700">-&gt;</font><font color="#0000BB">xpath</font><font color="#007700">(</font><font color="#DD0000">'b/c'</font><font color="#007700">);<br /><br />while(list( , </font><font color="#0000BB">$node</font><font color="#007700">) = </font><font color="#0000BB">each</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">'b/c: '</font><font color="#007700">,</font><font color="#0000BB">$node</font><font color="#007700">,</font><font color="#DD0000">"\n"</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?&gt;</font>
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>/a/b/c: text
/a/b/c: stuff
b/c: text
b/c: stuff</PRE
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>&#13;       Notice that the two results are equal.
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