php - What's the purpose of '\' when we create an object? -

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what's purpose of using backslash \ when create object in php?

$iter = new \arrayiterator($arr);

it's used create new object of qualified class. say, you're code in namespace "namespace1":

namespace namespace1; $iter = new arrayiterator();

would resolved namespace1\arrayiterator(); and

$iter = new \arrayiterator();

would resolved arrayiterator();

Dil