What is a namespace PHP namespace instance description

Copy the Code code as follows:

namespace Bak\ba\ba;
Function Bab () {
echo "BI";
}
namespace KKK;
function K1 () {
echo "K1";
}
\bak\ba\ba\bab ();//Use a different namespace under the KKK namespace, note the previous \
Use \bak\ba\ba as b;//is still under the KKK namespace, but the following methods are correct when using aliases
#use Bak\ba\ba as b;//front can not use the \ Number
B\bab ()///use aliases under the namespace should not be preceded by the \ Number
K1 ();//Call the function without an error stating that use does not affect the current namespace

The above describes what is the namespace instance description of the PHP namespace, including what the namespace aspect is, and hopefully a friend interested in the PHP tutorial will be helpful.

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