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Asked: 2026-06-06T05:32:04+00:00

I have PHP snippets like this ( snippet.php ): <?php $some_param = some_function(); ?>

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I have PHP snippets like this (snippet.php):

<?php 
    $some_param = some_function();
?>

<p>
    Text, bla bla bla... <?php echo $some_param ?> other text
    more text
</p>

I load these snippets like this:

$html = file_get_contets('snippet.php');
$dom = new DOMDocument('1.0');
$dom->loadHTML($html);

and modify using xpath:

$xpath = new DOMXPath($dom);
foreach ($xpath->query("//text()") as $q) {
    $str = trim($q->nodeValue);
    if (isset($strings[$str])) {
        $q->nodeValue = translate($str);
    }
}

The problem comes when I try to save this file:

$dom->save($out);

It destroys completly the snippet structure:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><head><?php
    $some_param = some_function();
??></head><body><p>
    Translated text, bla bla bla... &lt;?php echo $some_param ?&gt; other text
    more text
</p></body></html>

What can I do to restore the original snippet structure when saving?

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1 Answer

  1. Editorial Team

    The PHP Snippets are Processing Instructions. You can query them with XPath:

    //processing-instruction('php')

    The node test text() is true for any text node. For example, child::text() will select the text node children of the context node. Similarly, the node test comment() is true for any comment node, and the node test processing-instruction() is true for any processing instruction. The processing-instruction() test may have an argument that is Literal; in this case, it is true for any processing instruction that has a name equal to the value of the Literal.

    How to add them to a document is explained in

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