PHP provides 9 magic constants that hold special compile-time information. These include __FUNCTION__, __METHOD__, __CLASS__, ::class, __TRAIT__, __NAMESPACE__, __LINE__, __FILE__, and __DIR__. These constants can be useful for retrieving context-specific data like current function name, method name, class name, and file paths. Examples illustrate how each constant behaves in different scenarios, including within classes, traits, namespaces, and anonymous functions.
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Introduction__FUNCTION____METHOD____CLASS__MyClass::class__TRAIT____NAMESPACE____LINE____FILE____DIR__ConclusionSort: