Description:
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It is necessary that I check to see if an array key has been set by the code.  Such as is with this code:

foreach($array as $key => $value){

     if(is_int($key)) echo 'the code assigned a key for this element';

}


How can I achieve this with the following array?:

array('1'=>'Yes','0'=>'No');


PHP converts the '1' into 1 which leaves me no detection for user assigned keys.  This is bad form.

Reproduce code:
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From manual page: language.types.array
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