Description:
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When you use a trim by mistake on an array, the array get's an string

Reproduce code:
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settype($asd,"array");
$asd["a"] = "one";
$asd["b"] = "two";
$asd["c"] = "three";
echo gettype($asd); //-> array
print_r($asd);      //gets back the array

$asd = trim($asd); //trim it
print_r($asd);     //prints Array
echo gettype($asd);//gives string back

Expected result:
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There should be an error, because a trim function can't be use to an array, or every offset should get trimmed.