array_key_exists表示数组中的复合键

How do I check to see if a compound key exists with array_key_exists such as

$myarr['ind1']['ind2']

Would like to see if the key ['ind1']['ind2'] exists in $myarr.

I googled this and looked at some similar answers but couldn't find anything.

You can make use of issetDocs to check for an array member that not equals NULL, which is the case for a compound array and safe to assume in your case:

if (isset($myarr['ind1']) && array_key_exists('ind2', $myarr['ind1'])
{
   ...
}

If $myarr['ind2'] potentially never equals to NULL you can do the following, which might show better what you're trying to check:

if (isset($myarr['ind1']['ind2']))
{
   ...
}

This checks the compound key does exists and is not NULL.

if(array_key_exists("ind1", $myarr) && array_key_exists("ind2",$myarr["ind1"])) {

}