How to search and remove sub arrays from array if string not found in list

Question

I'm trying to search the array and to look for keywords at the second level of the array, like ["Secondary_Volunteering__c"] and Referral_Source_within_CF__c. If those values are found then keep them, if not delete them.

I have created the following but it comes back blank.

Any guidance will be appreciated.

foreach($getAllCustomerCustomFields as $k => $v) {
    if(!in_array(["Secondary_Volunteering__c"], $v) && !in_array("Referral_Source_within_CF__c", $v))
        unset($getAllCustomerCustomFields[$k]);
}

foreach($getAllCustomerCustomFields as $fields){
    foreach($fields as $field){
        echo( '<strong>'.$field["FIELD_LABEL"].'</strong><br>');
        foreach ($field["CUSTOM_FIELD_OPTIONS"] as $cfield){
        echo($cfield["OPTION_VALUE"].'<br>');

        }
         echo('<br>');
    }
   
}

This is the PHP array.

array(1) {
  ["CUSTOMFIELDS"]=>
  array(46) {
    ["Secondary_Volunteering__c"]=>
    array(12) {
      ["FIELD_NAME"]=>
      string(25) "Secondary_Volunteering__c"
      ["FIELD_ORDER"]=>
      int(2)
      ["FIELD_FOR"]=>
      string(7) "CONTACT"
      ["FIELD_LABEL"]=>
      string(22) "Secondary Volunteering"
      ["FIELD_TYPE"]=>
      string(11) "MULTISELECT"
      ["FIELD_HELP_TEXT"]=>
      NULL
      ["DEFAULT_VALUE"]=>
      NULL
      ["EDITABLE"]=>
      bool(true)
      ["VISIBLE"]=>
      bool(true)
      ["CUSTOM_FIELD_OPTIONS"]=>
      array(9) {
        [0]=>
        array(3) {
          ["OPTION_ID"]=>
          int(3)
          ["OPTION_VALUE"]=>
          string(6) "Events"
          ["OPTION_DEFAULT"]=>
          bool(false)
        }
      }
      ["DEPENDENCY"]=>
      NULL
      ["JOIN_OBJECT"]=>
      NULL
    }
    ["Primary_Volunteering__c"]=>
    array(12) {
      ["FIELD_NAME"]=>
      string(23) "Primary_Volunteering__c"
      ["FIELD_ORDER"]=>
      int(3)
      ["FIELD_FOR"]=>
      string(7) "CONTACT"
      ["FIELD_LABEL"]=>
      string(20) "Primary Volunteering"
      ["FIELD_TYPE"]=>
      string(11) "MULTISELECT"
      ["FIELD_HELP_TEXT"]=>
      NULL
      ["DEFAULT_VALUE"]=>
      NULL
      ["EDITABLE"]=>
      bool(true)
      ["VISIBLE"]=>
      bool(true)
      ["CUSTOM_FIELD_OPTIONS"]=>
      array(27) {
        [0]=>
        array(3) {
          ["OPTION_ID"]=>
          int(87)
          ["OPTION_VALUE"]=>
          string(9) "Animal Me"
          ["OPTION_DEFAULT"]=>
          bool(false)
        }
      }
      ["DEPENDENCY"]=>
      NULL
      ["JOIN_OBJECT"]=>
      NULL
    }
    ["Referral_Source_within_CF__c"]=>
    array(12) {
      ["FIELD_NAME"]=>
      string(30) "Referral_Source_within_CF__c"
      ["FIELD_ORDER"]=>
      int(4)
      ["FIELD_FOR"]=>
      string(7) "CONTACT"
      ["FIELD_LABEL"]=>
      string(27) "Referral Source within CF"
      ["FIELD_TYPE"]=>
      string(11) "MULTISELECT"
      ["FIELD_HELP_TEXT"]=>
      NULL
      ["DEFAULT_VALUE"]=>
      NULL
      ["EDITABLE"]=>
      bool(true)
      ["VISIBLE"]=>
      bool(true)
      ["CUSTOM_FIELD_OPTIONS"]=>
      array(8) {
        [0]=>
        array(3) {
          ["OPTION_ID"]=>
          int(1)
          ["OPTION_VALUE"]=>
          string(11) "Sarah "
          ["OPTION_DEFAULT"]=>
          bool(false)
        }
      }
      ["DEPENDENCY"]=>
      NULL
      ["JOIN_OBJECT"]=>
      NULL
    }

Instead of var_dump, can you provide your php array as var_export instead? — Kevin Y
– Kevin Y, Commented Jan 31, 2022 at 23:54

Simon K · Accepted Answer · 2022-01-31 23:53:52Z

1

If I understand you correctly, it looks like array_filter will help you here...

<?php

$getAllCustomerCustomFields = array_filter($getAllCustomerCustomFields, function($key) {
    return $key == 'Secondary_Volunteering__c' || $key == 'Referral_Source_within_CF__c';
}, ARRAY_FILTER_USE_KEY)

This basically filters off (reduces) all the unwanted keys of the array

answered Jan 31, 2022 at 23:53

Simon K

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3 Comments

Julie Freeman Over a year ago

Ooo, nice. I'll give it a try. Thanks.

Julie Freeman Over a year ago

Perfect, I can now see how that works here. Thank you so much!

Simon K Over a year ago

You're welcome. Happy coding. Please don't forget to accept the answer if you are happy with it.... it gives me great satisfaction! *edit - I see you have done so - thank you!

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