PHP explode string by html tag

Question

Suppose string $a holds

<p>Phasellus blandit enim eget odio euismod eu dictum quam scelerisque.
</p><p>Sed ut diam nisi.</p><p>Ut vestibulum volutpat luctus.</p>

How can I explode this into this array

Array(
    [0] = '<p>Phasellus blandit enim eget odio euismod eu dictum quam scelerisque.</p>';
    [1] = '<p>Sed ut diam nisi. Ut vestibulum volutpat luctus.</p>';
    [2] = '<p>Ut vestibulum volutpat luctus.</p>';
)

Rusty Fausak · Accepted Answer · 2011-09-22 05:13:50Z

8

Using DOMDocument and DOMXPath (a bit overkill if only a simple solution is needed):

$dom = new DOMDocument();
$dom->loadHTML($a);
$domx = new DOMXPath($dom);
$entries = $domx->evaluate("//p");
$arr = array();
foreach ($entries as $entry) {
    $arr[] = '<' . $entry->tagName . '>' . $entry->nodeValue .  '</' . $entry->tagName . '>';
}
print_r($arr);

answered Sep 22, 2011 at 5:13

Rusty Fausak

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1 Comment

Bernhard Fürst Over a year ago

You may consider calling libxml_use_internal_errors(true); first to avoid DOMDocument polluting your standard error handler with HTML related errors. Implement your own handler to catch the errors instead. See the comments in php.net/manual/de/domdocument.loadhtml.php for more information.

drew010 · Accepted Answer · 2011-09-22 05:30:00Z

7

<?php
$ps    = array();
$count = preg_match_all('/<p[^>]*>(.*?)<\/p>/is', $a, $matches);
for ($i = 0; $i < $count; ++$i) {
    $ps[] = $matches[0][$i];
}

That could be one way. Or you could use a loop with strpos

edited Sep 22, 2011 at 5:30

answered Sep 22, 2011 at 5:06

drew010

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3 Comments

drew010 Over a year ago

preg is faster for basic parsing like this.

k102 Over a year ago

we are speaking about php and its slow. anyway, you can save a couple of miliseconds on it but loose a couple of hours thying to make this code working with more complex strings.

Edward J Beckett Over a year ago

Nice demo ~ but this is not the correct way ~ parsing html with RegEx is a recipe for disaster...

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