types of magic

Magic function __construct () Called when an object is instantiated, and when __construct and a function with the name of the class name are present, __construct is called and the other is not called. __destruct () Called when an object is deleted or when an object operation terminates. __call () The object calls a method, and if the method exists, it is called directly; if it does not exist, it will call the __call function.

Magic function 1. __construct ()Called when an object is instantiated,When __construct and a function with a class name are present, __construct is called and the other is not called. 2. __destruct ()Called when an object is deleted or when an object operation terminates. 3. __call ()Object calls a method,If the method exists, it is called directly;If it does not exist, it will call the __call function. 4. __get ()When reading the properties of an ob

The Magic Chariot is the exclusive mount of the card teenager, and the skill is naturally related to the card teenager. Stepping strange random will burst out of the playing cards, according to the different effects of playing cards are different, the square is to increase the score, spades is to increase energy, grass flowers is clear full-screen obstacles. Different poker also brings different pleasures to the game. 　　

Magic Method:PHP treats all the methods in the class that begin with __ (two underscores) as a magic method, and it is generally recommended that users do not prefix the custom method with __. Magic Method:1. __construct ()The default constructor method for a class, if __construct () and a method with the same name as the class, is called by default __construct (

Slowly long search night, the moon hanging high.Currently all of PHP's magic methods have a look at these__construct () __destruct () __call () __callstatic () __get () __set () __isset () __unset () __sleep () __wakeup () __toString () __invoke () __set_state () __clone () __debuglnfo ()Why study these magic methods, can enrich our knowledge. That's what programmers do, and when you feel like you need a ce

This article describes how to use php magic methods (php magic functions). For more information, see This article describes how to use php magic methods (php magic functions). For more information, see The Code is as follows: /** PHP treats all class Methods Starting with _ (two underscores) as

In-depth analysis of php magic methods and magic variables, built-in methods and built-in variables. Php built-in variable: DIRECTORY_SEPARATORDIRECTORY_SEPARATOR is a php built-in command that returns the path separator related to the operating system. it is returned on windows, but in linux or un-like Php built-in variable: DIRECTORY_SEPARATORDIRECTORY_SEPARATOR is a php built-in command that returns path

"Title description":Magic Board Magic Squares"Ideas":Does it feel like eight-digit?The obvious wide search, the state of the magic Plate as an arrangement, then the state is at most \ (8! = 40320\) species, space is acceptable, for the first few permutations can be implemented with comtop (I want to do eight digital when you are aware of this routine), Then accor

Magic Constants1. LineReturns the current line number in the file.2. FILEReturns the full path and file name of the file. If used in the include file, the include filename is returned. Since PHP 4.0.2, FILE always contains an absolute path, and the previous version sometimes contains a relative path.3. FUNCTIONReturns the name of the function (PHP 4.3.0 new addition). From PHP 5 This constant returns the name (case-sensitive) when the function is defi

PHP_007 magic variables and magic function magic variables PHP provides a large number of predefined constants to any script it runs. However, many constants are defined by different extension libraries. they only appear when these extension libraries are loaded, dynamically loaded, or included during compilation. There are eight

　　Mounts Introduction Light reading skills, the small series will also think that see the previous trick pumpkin, their skills are very similar. In the aggressive mode believe that the magic chariot can be transformed into other mounts skills mounts: Ice-Feng Wolf king, Meteor Lion, polar bear. If you look at skills alone, the magic chariot does not give you power, but a hidden combination score may help y

Magic constants:1. __line__Returns the current line number in the file.2. __file__Returns the full path and file name of the file. If used in the include file, the include file name is returned. Since PHP4.0.2, __file__ always contains an absolute path, and the previous version sometimes contains a relative path.3. __function__Returns the function name (PHP4.3.0 new). Since PHP5 this constant returns the name of the function when it is defined (case-s

Magic variablePHP provides a large number of predefined constants to any script it runs.However, many constants are defined by different extensions, and are only present when the extensions are loaded, either dynamically after loading, or they are included at compile time.There are eight magic constants whose values change as they change position in the code.For example, the value of __line__ depends on the

http://noi.openjudge.cn/ch0108/22/ Total time limit: 1000ms Memory Limit: 65535kB Describe Magic Square is a very magical n*n matrix, it's each row, each column and the diagonal, plus the number is the same.We can construct a magic square by the following methods. (Number of orders is odd)1. The first digit is written

1.string Serialize (mixed $value)-produces a representation of a value that can be storedSerialize () returns a string that contains a byte stream representing value that can be stored anywhere.This facilitates the storage or delivery of PHP values without losing their type and structureTo change the serialized string back to PHP value, use Unserialize ()@ Serialized Array　　Serialize ($arr);When setting a cookie, you can pass multiple values as a serialized array, and then deserialize the read o

What seems like ages ago, I listed 8 things you may not have known about indexes. although I 've since written about records of the 8 items, I 've yet to address the last item listed: 8. An index can potentially be the most efficient and valid tive may to retrieve anything between 0% and 100% of the data from a table. A few recent posts on OTN reminded me that perhaps it's about time I wrote something on this topic. Generally, the question that's commonly asked is at what point or at what percen

Php5 magic functions and magic constants Magic functions 1. _ Construct ()Called When instantiating an object,When _ construct and a function with the class name both exist, __construct will be called and the other will not be called. 2. _ Destruct ()It is called when an object or object operation is terminated. 3. _ Call ()Object calls a method,If a method exist

Php magic method-attribute overload method, php magic attribute overload Php has a magical class of methods. These methods are reserved and are generally not explicitly called outside. They start with a double underscore, they are called Magic Methods ). Php officially does not recommend defining other methods that start with a double underline. This section intr

Defined: The method that begins with the two line "__" in the PHP class is called the Magic method. Classification: For example: Construction method: __construct; destructor: __destruct; dynamic reload: __set (), __get (), __call (), __callstatic (), Clone of object: __clone () Application Scenarios: 1. When the program attempts to modify a non-existent or invisible class property, the PHP engine will call the __set () method, if the method is define

First, the Magic function(13)1, __construct ()Called when an object is instantiated, and when __construct and a function with the name of the class name are present, __construct is called and the other is not called.2, __destruct ()Called when an object is deleted or when an object operation terminates.3, __call ()The object calls a method, and if the method exists, it is called directly; if it does not exist, it will call the __call function.4, __get