比较两个不同的多维数组并突出显示更改

Question

I am creating a log file in which I want to show the old entry and the updated entry both together, but along those I also want to highlight the changes in the new entry like it's being done in stackoverflow when we edit the question they highlight the edited part.

As you can see there is a difference in the description and there are many other indexes, I am just showing some of them.

I have two different arrays that look like this:

new entry

   Array
(
    [0] => stdClass Object
        (

            [business_logo] => 31190_photo.jpg
            [business] => Sms Factory Powered By Bds Technologies Pvt Ltd
            [b_discription] => We smsfactory are world's leading SMS messaging provider offering remarakable and reliable SMS Text and Voice messaging globally through almost all-networks of mobile phones successfully. You may contact-us anytime for making any query. Our Services are very useful economically as well as eco-friendly,
            [mod_date] => 1467736200
        )

)

old entry

  Array
(
    [0] => stdClass Object
        (
            [business_logo] => 31190_photo.jpg
            [business] => Sms Factory Powered By Bds Technologies Pvt Ltd
            [b_discription] => We smsfactory are world's leading SMS messaging provider offering remarakable and reliable SMS Text and Voice messaging globally through almost all-networks of mobile phones successfully. You may contact-us anytime for making any query. Our Services are very useful economically as well as eco-friendly, which enables you to send simultaneous bulk sms to your targeted Customers, Regular-Customers, Buyers, Shoppers, Fans, Regular-shoppers, Clients, Clientele, Members, Managers, Supervisors, Fieldworkers, Graduates, Post graduates, Technicians, Public, Citizens, Mobile-Users, Viewers, Future-purchasers, Users, End-users, Students, Job-seekers, Enjoyers, Visitors, Frequent-visitors, Persons, Individuals, Frequenter, Obtainers, Receivers, Assignees, Recipients, Travelers, Tourists, Guys, Persons, Men and Women, Spectators, Technicians, Staff, Workers, Recruiters, Newcomers, Representatives, Dealers, Distributors, Followers, Shareholders, Investors, Bondholders, Shareowners, Financiers, Bankers, Participants, Associates, Assistants, Colleagues, Contributors, Helpers, Partakers, Party, Sharers, Supporters, Admirers, Devotees, Groupies, Enthusiasts and many more.
            [mod_date] => 1467736200
        )

)

I did my research for this and found plenty of functions, from which I have tried this:

 function arrayRecursiveDiff($aArray1, $aArray2) { 
    $aReturn = array(); 

    foreach ($aArray1 as $mKey => $mValue) { 
        if (array_key_exists($mKey, $aArray2)) { 
            if (is_array($mValue)) { 
                $aRecursiveDiff = arrayRecursiveDiff($mValue, $aArray2[$mKey]); 
                if (count($aRecursiveDiff)) { $aReturn[$mKey] = $aRecursiveDiff; } 
            } else { 
                if ($mValue != $aArray2[$mKey]) { 
                    $aReturn[$mKey] = $mValue; 
                } 
            } 
        } else { 
            $aReturn[$mKey] = $mValue; 
        } 
    } 

    return $aReturn; 
} 

$arr1 = arrayRecursiveDiff($newentry,$oldentry);

But it is only showing me the new entry without any comparison. Hope I have explained my problem well enough.

Answer 1

From what I gathered you're looking at a way to highlight differences in text to see the differences between the descriptions. From there, may I suggest that you limit the diff function to just b_discription as the other attributes don't appear to be within the scope of what you need. Do you expect business_logo , business_name or mod_date to be changed? Regardless, the following function can be run over all attributes in your object if they can be converted to a string.

simplediff is an excellent script that finds the difference between two strings, including:

• Exists in A and not B (Deletion)
• Exists in B and not A (Insertion)

<?php
/*
    Paul's Simple Diff Algorithm v 0.1
    (C) Paul Butler 2007 <http://www.paulbutler.org/>
    May be used and distributed under the zlib/libpng license.
*/
function diff($old, $new){
    $matrix = array();
    $maxlen = 0;
    foreach($old as $oindex => $ovalue){
        $nkeys = array_keys($new, $ovalue);
        foreach($nkeys as $nindex){
            $matrix[$oindex][$nindex] = isset($matrix[$oindex - 1][$nindex - 1]) ?
                $matrix[$oindex - 1][$nindex - 1] + 1 : 1;
            if($matrix[$oindex][$nindex] > $maxlen){
                $maxlen = $matrix[$oindex][$nindex];
                $omax = $oindex + 1 - $maxlen;
                $nmax = $nindex + 1 - $maxlen;
            }
        }   
    }
    if($maxlen == 0) return array(array('d'=>$old, 'i'=>$new));
    return array_merge(
        diff(array_slice($old, 0, $omax), array_slice($new, 0, $nmax)),
        array_slice($new, $nmax, $maxlen),
        diff(array_slice($old, $omax + $maxlen), array_slice($new, $nmax + $maxlen)));
}
function htmlDiff($old, $new){
    $ret = '';
    $diff = diff(preg_split("/[\s]+/", $old), preg_split("/[\s]+/", $new));
    foreach($diff as $k){
        if(is_array($k))
            $ret .= (!empty($k['d'])?"<del>".implode(' ',$k['d'])."</del> ":'').
                (!empty($k['i'])?"<ins>".implode(' ',$k['i'])."</ins> ":'');
        else $ret .= $k . ' ';
    }
    return $ret;
}

$old = "We smsfactory are world's leading SMS messaging provider offering remarakable and reliable SMS Text and Voice messaging globally through almost all-networks of mobile phones successfully. You may contact-us anytime for making any query. Our Services are very useful economically as well as eco-friendly";

$new = "We smsfactory are world's leading SMS messaging provider offering remarakable and reliable SMS Text and Voice messaging globally through almost all-networks of mobile phones successfully. You may contact-us anytime for making any query. Our Services are very useful economically as well as eco-friendly, which enables you to send simultaneous bulk sms to your targeted Customers, Regular-Customers, Buyers, Shoppers, Fans, Regular-shoppers, Clients, Clientele, Members, Managers, Supervisors, Fieldworkers, Graduates, Post graduates, Technicians, Public, Citizens, Mobile-Users, Viewers, Future-purchasers, Users, End-users, Students, Job-seekers, Enjoyers, Visitors, Frequent-visitors, Persons, Individuals, Frequenter, Obtainers, Receivers, Assignees, Recipients, Travelers, Tourists, Guys, Persons, Men and Women, Spectators, Technicians, Staff, Workers, Recruiters, Newcomers, Representatives, Dealers, Distributors, Followers, Shareholders, Investors, Bondholders, Shareowners, Financiers, Bankers, Participants, Associates, Assistants, Colleagues, Contributors, Helpers, Partakers, Party, Sharers, Supporters, Admirers, Devotees, Groupies, Enthusiasts and many more.";

?>
<!doctype html>
<head>
    <style>
        .container {
            width: 50%;
            margin-right: auto;
            margin-left: auto;
            font-family: sans-serif;
            font-size: 12px;
            line-height: 16px;
        }

        del {
            background-color: #FFAB91;
            color: ;
            text-decoration: none;
        }

        ins {
            background-color: #C5E1A5;
            color: ;
            text-decoration: none;
        }
    </style>
</head>
<body>
    <div class="container">
        <?php echo htmlDiff($old, $new); ?>
    </div>  
</body>
</head>

Working Example: https://3v4l.org/uU0dv