What is the significance of using "::" instead of "\" in namespaces in PHP?

When defining namespaces in PHP, it is important to use "::" instead of "\" as the namespace separator. This is because "\" is used as an escape character in PHP strings, which can lead to unexpected behavior or errors when defining namespaces. By using "::" as the namespace separator, you can avoid conflicts with the escape character and ensure proper namespace declaration. 

// Incorrect namespace declaration
namespace MyNamespace\SubNamespace;

// Correct namespace declaration
namespace MyNamespace\SubNamespace;

Keywords

namespaces PHP "::" "\" significance

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