array_key_exists for compound key in array
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 look开发者_如何学运维ed at some similar answers but couldn't find anything.
if(array_key_exists("ind1", $myarr) && array_key_exists("ind2",$myarr["ind1"])) {
}
You can make use of isset
Docs 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
.
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