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Editorial Team
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Asked: 2026-06-10T10:08:48+00:00

<page> <tab dim=70></tab> <tab dim=40></tab> <tab dim=30></tab> <tab dim=30></tab> <tab dim=30></tab> <tab dim=70></tab> </page>

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<page>
  <tab dim="70"></tab>
  <tab dim="40"></tab>
  <tab dim="30"></tab>
  <tab dim="30"></tab>
  <tab dim="30"></tab>
  <tab dim="70"></tab>
</page>

how to get the value of tab’s dim attributes and take out the distinct value using xslt.means it will print 30,40,70

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1 Answer

  1. Editorial Team

    To select the distinct attribute values, you can use this XPath:

    /page/tab[not(@dim=preceding-sibling::tab/@dim)]/@dim

    A possible XSLT template would be

    <?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="text" />
    <xsl:template match="/">
        <xsl:for-each select="/page/tab[not(@dim=preceding-sibling::tab/@dim)]/@dim">
            <xsl:sort select="." data-type="number"/>
            <xsl:value-of select="concat(., substring(',', 2 - (position() != last())))"/>
        </xsl:for-each>
    </xsl:template>
</xsl:stylesheet>

    To transform the source document with the stylesheet in PHP, you can use:

    $xml = new DOMDocument;
$xml->load('collection.xml');
$xsl = new DOMDocument;
$xsl->load('collection.xsl');
$proc = new XSLTProcessor;
$proc->importStyleSheet($xsl);
echo $proc->transformToXML($xml);

    This will give 30,40,70 in the output.

    You can achieve the same without an XSLT by simply doing:

    $page = simplexml_load_file('NewFile.xml');
$dims = $page->xpath('/page/tab[not(@dim=preceding-sibling::tab/@dim)]/@dim');
$dims = array_map('strval', $dims);
sort($dims);
echo implode(',', $dims);

    Also see

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