Php function method for obtaining and checking the class name, function name, and method name. php function name_php tutorial

Php obtains and checks the class name, function name, and method name function method, and php function name. Function methods used by php to obtain and check the class name, function name, and method name. php function name 1. function_exists ()-ReturnTRUEifthegivenfunctionhasbeendefined2.is _ callable ()-checks the function methods for obtaining the php parameter, checking the class name, function name, and method name, and php function name

1. function_exists ()-Return TRUE if the given function has been defined
2. is_callable ()-check whether the parameter is a valid callable structure
3. class_exists ()-check whether the class has been defined
4. method_exists ()-check whether the method of the class exists

_ 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 ).

Note: These constants have two underscores.

Get_class (class name); // Obtain the class name of the class where the current statement is located.
Get_class_methods (class name); // retrieves all the method names of the class name and forms an array
Get_class_vars (class name); // retrieves all the highlighted names of the class name and forms an array

Handler 1. function_exists ()-Return TRUE if the given function has been defined 2. is_callable ()-detection parameter...