php 單例模式有什么缺點

PHP：超文本預處理器 (PHP: Hypertext Preprocessor )

PHP is an abbreviation of Hypertext Preprocessor, earlier called Personal Home Page. PHP is extensively used HTML-embedded, open-source server-side scripting language created and designed for web development and it is also used as a general-purpose programming language. In 1994, It was developed by Rasmus Lerdorf and in 1995, it was introduced in the market. Most of the syntax of PHP is borrowed from C, C++, and Java.

PHP是Hypertext Preprocessor的縮寫 ，以前稱為Personal Home Page 。 PHP是為Web開發創建和設計的，廣泛使用的嵌入HTML的開放源代碼服務器端腳本語言，并且它還用作通用編程語言。 1994年，它由Rasmus Lerdorf開發，并在1995年推向市場。 PHP的大多數語法都是從C，C ++和Java借用的。

PHP codes are easily assorted with HTML codes and can be used in a mixture with diverse web substructures. On the server, its scripts are implemented. PHP interpreter is used to perform operations on PHP codes. The primary aim of PHP is to enable web developers to develop dynamically created web pages promptly.

PHP代碼很容易與HTML代碼搭配使用，并且可以與各種Web子結構混合使用。 在服務器上，其腳本已實現。 PHP解釋器用于對PHP代碼執行操作。 PHP的主要目的是使Web開發人員能夠Swift開發動態創建的網頁。

A PHP file comprised of texts, HTML tags and scripts with which it also comprises a file extension of .php, .php3, or .phtml. A user can create a login page, design a form, and create forums, dynamic and static websites and many more functions with PHP.

一個由文本，HTML標記和腳本組成的PHP文件，該文件還包括.php ， .php3或.phtml的文件擴展名。 用戶可以使用PHP創建登錄頁面，設計表單以及創建論壇，動態和靜態網站以及更多功能。

PHP的主要功能 (Key features of PHP)

• Hypertext Preprocessor is the full form of abbreviated term PHP.

  超文本預處理器是縮寫詞PHP的完整形式。

• PHP is an open-source server-side scripting language like ASP.

  PHP是類似于ASP的開源服務器端腳本語言。

• Diverse databases like MySQL, Oracle, Sybase, Solid, PostgreSQL, Informix, etc. are supported by PHP.

  PHP支持MySQL，Oracle，Sybase，Solid，PostgreSQL，Informix等各種數據庫。

• PHP is free to download and use for web development, GUI applications, etc.

  可免費下載PHP并將其用于Web開發，GUI應用程序等。

PHP的優點 (Advantages of PHP)

1. Cost is free:

   費用免費 ：

   PHP is an open-source language and all its elements, functions and features are free to use and distribute.

   PHP是一種開源語言，其所有元素，功能和特性均可免費使用和分發。

2. Platform independent:

   平臺無關 ：

   PHP is platform-independent and can be operated, processed and functioned on all significant operating systems.

   PHP是獨立于平臺的，并且可以在所有重要的操作系統上進行操作，處理和運行。

3. Compatible:

   兼容的

   PHP's compatibility with almost all servers is satisfied and is used in these days.

   目前，PHP與幾乎所有服務器的兼容性都得到了滿足和使用。

4. Secure:

   安全 ：

   The security of PHP has leveled in multiple layers to prevent threats and other malevolent attacks.

   PHP的安全性已在多個層次上進行了分級，以防止威脅和其他惡意攻擊。

5. Easy to learn:

   簡單易學 ：

   The syntax of PHP is very easy, simple and understandable. Its codes are fundamentally based on C, C++, and HTML-embedded. So because of that, it makes it easier to learn simply for a programmer.

   PHP的語法非常容易，簡單且易于理解。 它的代碼基本上基于C，C ++和HTML嵌入式。 因此，這樣一來，對于程序員來說，更容易學習。

PHP的缺點 (Disadvantages of PHP)

1. Security:

   安全性 ：

   Anyone can see the source code of PHP because its open-sourced and through bugs, it can be used by anyone to traverse the weakness of it.

   任何人都可以看到PHP的源代碼，因為它是開源的，并且可以通過bug來供任何人用來克服它的弱點。

2. Not satisfactory for large applications:

   對于大型應用程序不滿意 ：

   Huge applications developed out of the programming language will be strenuous to support because the programming language is not extremely modular.

   用非編程語言開發的大量應用程序將竭力支持，因為該編程語言不是非常模塊化的。

3. Error Handling Method is poor:

   錯誤處理方法不佳 ：

   The framework or substructure has a substandard error handling method.

   框架或子結構具有次標準的錯誤處理方法。

翻譯自: https://www.includehelp.com/dictionary/php-full-form.aspx

php 單例模式有什么缺點