Tuesday, April 26, 2011

Recursively remove the empty html tags

Hello Guys,

Here i have wrote the new function and REGEX pattern to remove the nested empty tags (nested) from string. Watch yourself below.

<?php

/**
 * remove_empty_tags_recursive ()
 * Remove the nested HTML empty tags from the string.
 *
 * @author    Junaid Atari <mj.atari@gmail.com>
 * @version    1.0
 * @param    string    $str    String to remove tags.
 * @param    string    $repto    Replace empty string with.
 * @return    string    Cleaned string.
 */

function 
remove_empty_tags_recursive ($str$repto NULL)
{
    
//** Return if string not given or empty.
    
if (!is_string ($str)
        || 
trim ($str) == '')
            return 
$str;

    
//** Recursive empty HTML tags.
    
return preg_replace (

        
//** Pattern written by Junaid Atari.
        
'/<([^<\/>]*)>([\s]*?|(?R))<\/\1>/imsU',

        
//** Replace with nothing if string empty.
        
!is_string ($repto) ? '' $repto,

        
//** Source string
        
$str
    
);
}
/*
+=====================================
| EXAMPLE
+=====================================
*/
$str=<<<EOF

<p></p>
<div id="paralax">
    <div><p></p>Hello User,<strong></strong></div>
    <div id="contents">Welcome to our domain.</div><p><p><p></p></p></p>
</div>

EOF;

echo 
remove_empty_tags_recursive ($str);
/*
+=====================================
| OUTPUT:
+=====================================
*/

/*<div id="paralax">
    <div>Hello User,</div>
    <div id="contents">Welcome to our domain.</div>
</div>*/


Hope you like it.

2 comments:

Anonymous said...

Nice! I tried this, but I could not get empty <a href="..."></a> to go away. Nice looking work though.

Sag-e-Attar Junaid Atari said...

It's just remove the empty tags have no data, also will skip attributes.

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