I want to remove empty paragraphs from an HTML document using simple_html_dom.php. I know how to do it using the DOMDocument class, but, because the HTML files I work with are prepared in MS Word, the DOMDocument's loadHTMLFile() function gives this exception "Namespaces are not defined".
This is the code I use with the DOMDocument object for HTML files not prepared in MS Word:
<?php
/* Using the DOMDocument class */
/* Create a new DOMDocument object. */
$html = new DOMDocument("1.0", "UTF-8");
/* Load HTML code from an HTML file into the DOMDocument. */
$html->loadHTMLFile("HTML File With Empty Paragraphs.html");
/* Assign all the <p> elements into the $pars DOMNodeList object. */
$pars = $html->getElementsByTagName("p");
echo "The initial number of paragraphs is " . $pars->length . ".<br />";
/* The trim() function is used to remove leading and trailing spaces as well as
* newline characters. */
for ($i = 0; $i < $pars->length; $i++){
if (trim($pars->item($i)->textContent) == ""){
$pars->item($i)->parentNode->removeChild($pars->item($i));
$i--;
}
}
echo "The final number of paragraphs is " . $pars->length . ".<br />";
// Write the HTML code back into an HTML file.
$html->saveHTMLFile("HTML File WithOut Empty Paragraphs.html");
?>
This is the code I use with the simple_html_dom.php module for HTML files prepared in MS Word:
<?php
/* Using simple_html_dom.php */
include("simple_html_dom.php");
$html = file_get_html("HTML File With Empty Paragraphs.html");
$pars = $html->find("p");
for ($i = 0; $i < count($pars); $i++) {
if (trim($pars[$i]->plaintext) == "") {
unset($pars[$i]);
$i--;
}
}
$html->save("HTML File without Empty Paragraphs.html");
?>
It is almost the same, except that that the $pars variable is a DOMNodeList when using DOMDocument and an array when using simple_html_dom.php. But this code does not work. First it runs for two minutes and then reports these errors: "Undefined offset: 1" and "Trying to get property of nonobject" for this line: "if (trim($pars[$i]->plaintext == "")) {".
Does anyone know how I can fix this?
Thank you.
I also asked on stackoverflow.
