Description:
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I tried to convert an array, with integer keys, to an object. The problem seems to be that conversion is done, but the object's elements can't be called by the script. 

$obj = (object)array(1,2,3);
var_dump($obj) returns: object(stdClass)#1 (3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) 
var_export($obj) returns:  stdClass::__set_state(array( ))

OK, the conversion is done, but objects don't support $obj->0 property access (property names should be valid php identifiers). 
When it's not a bug, is there a way to call that property? 
Except the object iteration pattern? I consulted some forums, but nowhere have got an answer.

Reproduce code:
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$obj = (object)array(1,2,3);

// it works
foreach($obj as $key => $value) {
    echo "$key => $value";
}

// doesn't work
echo $obj->0;