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Trying to use regex matches between words using PHP

Answer 1

A:

Try to use ereg_replace() or preg_replace() function when you are trying to perform a regular expression search and replace.

chanchal1987 2010-07-24 11:25:09

ereg_replace is depreciated. Better to stick to preg_replace.

Brad F Jacobs 2010-07-24 11:34:47

What the hell? No one told me ereg_replace had gone down in value! ;)

TheDeadMedic 2010-07-24 11:41:24

@TheDeadMedic, Sell Sell Sell!

Mike Sherov 2010-07-24 11:53:52

Answer 2

A:

I put this together very quickly, so it probably doesn't cover all edge cases, but I think it at least partially matches your requirements. Also, I haven't tried it in PHP.

/[^\s>]+[\s]*(<([^>]+)>)(.*)(</\2>)[\s]*[^\s<]+/g

In the following example:

<p>This is a <b><i>nice</i> sentence</b>.</p> <p>Here's another sentence.</p>

It only matches the first sentence, in the following groups:

<b>
b
<i>nice</i> sentence
b

Paul Lammertsma 2010-07-24 11:56:37

Answer 3

A:

What are you actually trying to achieve? Parsing an html document with regex might not be the best solution. You can use XPath for what you've described (so far).
E.g. finding all rows in a table that contain the text this is a word:

<?php
$doc = new DOMDocument;
$doc->loadhtml('<html><head><title>...</title></head><body>
  <table>
    <tr><td>1</td><td>lalala</td></tr>
    <tr><td>2</td><td>this is a <b>word</b></td></tr>
    <tr><td>3</td><td>lalala</td></tr>
    <tr><td>4</td><td><b>And this is a</b> word, too</td></tr>
  </table>
</body></html>');

$xpath = new DOMXPath($doc);
foreach($xpath->query('/html/body/table/tr[./td[contains(., "this is a word")]]') as $tr) {
  foreach($tr->childNodes as $td) {
    echo $td->nodeValue, ' ';
  }
  echo "\n";
}

prints

2 this is a word 
4 And this is a word, too

VolkerK 2010-07-24 12:27:40

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Trying to use regex matches between words using PHP

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