Simple PHP magic method call example

The current row number in the _ LINE _ file. Website promotion
The complete path and FILE name of the _ FILE. If it is used in a file to be included, the file name to be included is returned. Starting from PHP 4.0.2, __file _ always contains an absolute path (if it is a symbolic connection, it is an absolute path after resolution ), earlier versions sometimes contain a relative path.
The directory where the _ DIR _ file is located. If it is used in included files, the Directory of the included files is returned. It is equivalent to dirname (_ FILE __). Unless it is the root directory, the name of the directory does not include the slash at the end. (Added in PHP 5.3.0) =
_ FUNCTION name (New in PHP 4.3.0 ). Starting from PHP 5, this constant returns the name (case sensitive) when the function is defined ). In PHP 4, the value is always lowercase letters.
_ CLASS name (New in PHP 4.3.0 ). Starting from PHP 5, this constant returns the name (case sensitive) when the class is defined ). In PHP 4, the value is always lowercase letters.
_ METHOD _ class METHOD name (New PHP 5.0.0 ). Returns the name (case sensitive) when the method is defined ).

SQL code
<? Php
Echo _ LINE _. "<br/>"; // display the number of rows
Echo _ FILE _. "<br/>"; // The complete path is displayed.
Class Test
{
Function (){
Echo _ CLASS _. "<br/>"; // display the CLASS name
Echo _ METHOD _. "<br/>"; // display the call METHOD
Echo _ FUNCTION _. "<br/>"; // display the current FUNCTION name
}
}
$ Obj = new Test ();
$ Obj-> ();
?> Fblww-0110)

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