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    <p>(this is not a real answer, but a consolidation of comments and answers posted here and related questions)</p> <hr> <p>This new version of the question's <code>DOMXpath_reuser</code> function contains the @ThomasWeinert suggestion (for avoid DOM changes by external re-<code>load</code>) and an option <code>$enforceRefresh</code> to workaround the problem of instability (as related question shows the programmer must detect <em>when</em>). </p> <pre class="lang-php prettyprint-override"><code> function DOMXpath_reuser_v2($file, $enforceRefresh=0) { //changed here static $doc=NULL; static $docName=''; static $xp=NULL; if (!$doc) $doc = new DOMDocument(); if ( $file!=$docName || ($xp &amp;&amp; $doc !== $xp-&gt;document) ) { // changed here $doc-&gt;load($file); $xp = NULL; } elseif ($enforceRefresh==2) { // add this new refresh mode $doc-&gt;loadXML($doc-&gt;saveXML()); $xp = NULL; } if (!$xp || $enforceRefresh==1) //changed here $xp = new DOMXpath($doc); return $xp; } </code></pre> <h2>When must to use $enforceRefresh=1 ?</h2> <p>... perhaps an open problem, only little tips and clues...</p> <ul> <li>when DOM submited to setAttribute, removeChild, replaceChild, etc.</li> <li>...? more cases?</li> </ul> <h2>When must to use $enforceRefresh=2 ?</h2> <p>... perhaps an open problem, only little tips and clues...</p> <ul> <li>when DOM was subject to indexes inconsistences, etc. See <a href="https://stackoverflow.com/q/20114285/287948">this question/solution</a>.</li> <li>...? more cases?</li> </ul>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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