Foreach inside foreach delete element issue

I have two arrays. I am looping first array and checking if value exist in second array and deleting that element from second array.

Here is my code.

$options = array();

  "OptionValues": [ 
         { 
            "OptionId": "22",  
            "OptionName": "Gener" 
         },
         { 
            "OptionId": "21",
            "OptionName" : "Gener"
         } 

  foreach($OptionValues as $optValue){
                    $optionIdVal = $optValue['OptionId'];
                    foreach ($options as $option) {
                        if($option['value'] == $optionIdVal){
                            unset($option['value']);
                        }
                    }
                }

This is working only for first time and skipping next element check. Please anyone help me. Thanks