Compare two arrays in PHP Laravel - php

Question

I need to change the div's class name based on if condition below it.
i have tried as <div class="<?php echo $class_name; ?>">
I want the class name to be "class name 1" or "class name 2" based on a if condition like if submitted and correct answer are same, i want the class name to be class_name1 or else it should be class_name2. The code is as follows:
<element class="col-sm-6 col-aligncenter">
<!--<div class="pipeline white lined-success"> -->
<div class="<?php echo $class_name; ?>">
<div class="pipeline-header">
<h5>
<b><?php echo $count++;?>. <?php echo $question_type == 'fill_in_the_blanks' ? str_replace('^', '__________', $question_title) : $question_title;?></b>
</h5>
<span><?php echo get_phrase('mark');?>: <?php echo $mark;?></span>
</div>
<?php if ($question_type == 'multiple_choice'):
$options_json = $this->crud_model->get_question_details_by_id($row['question_bank_id'], 'options');
$number_of_options = $this->crud_model->get_question_details_by_id($row['question_bank_id'], 'number_of_options');
if($options_json != '' || $options_json != null)
$options = json_decode($options_json);
else $options = array();
?>
<ul>
<?php for ($i = 0; $i < $number_of_options; $i++): ?>
<li><?php echo $options[$i];?></li>
<?php endfor; ?>
</ul>
<?php
if ($row['submitted_answer'] != "" || $row['submitted_answer'] != null)
{
$submitted_answer = json_decode($row['submitted_answer']);
$r = '';
for ($i = 0; $i < count($submitted_answer); $i++)
{
$x = $submitted_answer[$i];
$r .= $options[$x-1].',';
}
} else {
$submitted_answer = array();
$r = get_phrase('no_reply');
}
?>
<i><strong>[<?php echo get_phrase('answer');?> - <?php echo rtrim(trim($r), ',');?>]</strong></i>
<br>
<?php
if ($row['correct_answers'] != "" || $row['correct_answers'] != null) {
$correct_options = json_decode($row['correct_answers']);
$r = '';
for ($i = 0; $i < count($correct_options); $i++) {
$x = $correct_options[$i];
$r .= $options[$x-1].',';
}
} else {
$correct_options = array();
$r = get_phrase('none_of_them.');
}
?>
<i><strong>[<?php echo get_phrase('correct_answer');?> - <?php echo rtrim(trim($r), ',');?>]</strong></i>
<?php elseif($question_type == 'true_false'):
if ($row['submitted_answer'] != "") {
$submitted_answer = get_phrase($row['submitted_answer']);
}
else{
$submitted_answer = get_phrase('no_reply');
}
?>
<i><strong>[<?php echo get_phrase('answer');?> - <?php echo get_phrase($submitted_answer);?>]</strong></i><br>
<i><strong>[<?php echo get_phrase('correct_answer');?> - <?php echo get_phrase($row['correct_answers']);?>]</strong></i>
**div's class should change based on if answer and correct answer are equal**
There are two types of questions (multiple choice and true or false). It should behave same for both type of questions.