How to pass the explode value in another foreach in PHP

I am getting all the data from the database and one of my column data is 1|3|6|8.

I am using explode to get the output.

Now, I have a checkbox list that I am getting from the database and I have to pass the explode value in the checkbox list to check the checkbox.

<?php 
      $exp=explode('|', $Info['recog']); //getting from the database
      print_r($exp) // output is Array ( [0] => 120 [1] => 121 [2] => 130 [3] => 156 ) 

      foreach ($exp as $key => $e) {
      print_r($e);
        }
    
     // displaying the list
      foreach ($checkLists as $key => $check) {
        ?>
     <li>
      <label class="regBox">
         <div class="mb-3"><img src="<?php echo $check['img'];?>" alt=""></div>
         <input type="checkbox" name="recog[]" value="<?php echo $check['cid'];?>">
         <p><?php echo $check['title'];?></p>
         <div class="checkmark"></div>
      </label>
   </li>
   <?php }?>

I know I have to use something like foreach and the <?php echo ($check['cid']==$e['value'] ? 'checked' : '');?>

Answer

Ok – I think that because the exploded string yields a simple array the inner foreach loop needs only to check if the current array member is equal to the cid field for the current record..

<?php 
    $exp=explode( '|', $Info['recog'] );
    foreach( $checkLists as $key => $check ) {
        
        $checked='';
        
        foreach($exp as $i){// simple integer
            if( (int)$i == (int)$check['cid'] ){
                $checked='checked';
                break;
            }
        }
        # Alternative
        # $checked=in_array($check['cid'],$exp) ? 'checked' : '';
?>
    <li>
        <label class="regBox">
            <div class="mb-3">
                <img src="<?php echo $check['img'];?>" alt="" />
            </div>
            
            <input type="checkbox" name="recog[]" value="<?php echo $check['cid'];?>" <?php echo $checked;?>/>
            
            <p><?php echo $check['title'];?></p>
            <div class="checkmark"></div>
        </label>
   </li>
<?php
    }//close outer foreach
?>

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Answer