Delete a table and its content from html code in php - php

Question

I have a html code like below. I want to remove entire table and its content from it using php. I can remove the table tags using PHP strip_tags but i am not sure about deleting the table content. Any help would be appreciated.
<div>
<p> This is test paragraph</p>
<table>
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
</table>
</div>
Desired Output is
<div>
<p> This is test paragraph</p>
</div>
Thanks #medigeek and all for your answers, i've made few changes to the code so that it works with inline styles.
Solution:
$html = '<div>
<p> This is test paragraph</p>
<table style="width:100%"> // Note: Inline Styles
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
</table>
</div>';
$regex = '/<table[^>]*>.*?<\/table>/s'; // Regular expression pattern
//This Regex pattern even works with tags that contains inline styles
$replace = '';
$result = preg_replace($regex, $replace, $html);
echo($result);

Answer 1

<?php
$teststring = '<div>
<p> This is test paragraph</p>
<table>
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
</table>
</div>';
$regexpattern = '/<table>.*?<\/table>/s'; // Matching regular expression pattern
$replacement = ''; // Substitute the matched pattern with an empty string
$res = preg_replace($regexpattern, $replacement, $teststring);
echo($res);
?>
Matching regular expressions pattern
/=start regex pattern
<table> = start matching when you see this text
.* = match anything (any characters or empty) in between
? = but don't be greedy (as in only match
characters between the limits set)
<\/table> = stop matching when you see this text
/ = end regex pattern
s = modifier, keep matching even if you stumble upon new line characters
Regular expressions are powerful in matching otherwise seemingly complicated text strings in different programming languages. You may find more information here:
http://php.net/manual/en/function.preg-replace.php
http://php.net/manual/en/book.pcre.php
https://www.regular-expressions.info/quickstart.html

Answer 2

You can do this with preg_replace:
$your_html = '<table......';
$new_html = preg_replace("/(<table>).*?(<\/table>)/s", "", $your_html);
echo $new_html;
/*
OUTPUT:
<div>
<p> This is test paragraph</p>
</div>
*/
Regards,

Answer 3

If you are wanting to do this after the page has already loaded (page loads and certain event triggers the removal) it can't be done with php. Something like this would have to be done using javascript. If you are wanting it to be removed while the page is loading you're going to have to set the output to be within php.
<div>
<p> This is test paragraph</p>
<?php
if(*CASE FOR LOADING*){
echo "
<table>
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
</table>
";
}
?>
</div>
Doing it like this will only display the table when the cause is given through PHP.

Answer 4

Try this:
$content = <<<DATA
<div>
<p> This is test paragraph</p>
<table>
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
</table>
</div>
DATA;
$doc = new DOMDocument();
$doc->loadHTML($content, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$tables = $doc->getElementsByTagName('table');
while ($tables->length)
{
$tables[0]->parentNode->removeChild($tables[0]);
}
echo $doc->saveHTML();
Output:
<div> <p> This is test paragraph</p> </div>