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I was writing a tool to convert HTML tables to CSV and I noticed some bizarre behavior. Given this code
$html = <<<HTML <table> <tr><td>A</td><td>Rose</td></tr> </table> <h1>Leave me behind</h1> <table> <tr><td>By</td><td>Any</td></tr> </table> <table> <tr><td>Other</td><td>Name</td></tr> </table> HTML; $dom = new \DOMDocument(); $dom->loadHTML($html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED); foreach ($dom->getElementsByTagName('table') as $table) { foreach ($table->getElementsByTagName('tr') as $row) { echo trim($row->nodeValue) . PHP_EOL; } }I would expect output like this:
ARose ByAny OtherNameBut what I get is this:
ARose ByAny OtherName ByAny OtherNameI get the same result if I omit the first closing tag. It appears DOMDocument is nesting the second and third
<table>inside the first.Indeed, if I use xpath to only get immediate children from each table I get the correct output:
$xpath = new \DOMXPath($dom); foreach ($dom->getElementsByTagName('table') as $table) { foreach ($xpath->query('./tr', $table) as $row) { echo trim($row->nodeValue) . PHP_EOL; } }Enclose your $html with
<body>and</body>Revised Code (Note: I commented out the
$streamlines)<?php $html = <<<HTML <body> <table> <tr><td>A</td><td>Rose</td></tr> </table> <h1>Leave me behind</h1> <table> <tr><td>By</td><td>Any</td></tr> </table> <table> <tr><td>Other</td><td>Name</td></tr> </table> </body> HTML; $dom = new \DOMDocument(); $dom->loadHTML($html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED); $tables = $dom->getElementsByTagName('table'); // $stream = \fopen('php://output', 'w+'); for ($i = 0; $i < $tables->length; ++$i) { $rows = $tables->item($i)->getElementsByTagName('tr'); for ($j = 0; $j < $rows->length; ++$j) { echo trim($rows->item($j)->nodeValue) . "<br><br>"; } } // fclose($stream); ?>Alternatively, change
$dom->loadHTML($html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED);to
$dom->loadHTML($html, LIBXML_HTML_NODEFDTD);
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