PHP 5.2 IIS COMPATIBILITY INSTALL
PHP 5.2 IIS COMPATIBILITY CODE

Install the Windows Cache Extension for PHP The Windows Cache Extension for PHP provides a relative file path cache, which is used to store the mappings between relative and absolute file paths, thereby reducing the number of relative path resolutions that the PHP engine has to perform.

When a PHP application uses many PHP files and accesses them by relative paths, the operation of resolving relative paths to absolute paths may have a negative impact on the application's performance. Every relative file path has to be converted to an absolute file path by the PHP engine. PHP scripts very often include or operate with files by using relative file paths. The Windows Cache Extension for PHP includes a file cache that is used to store the content of the PHP script files in shared memory, which reduces the amount of file system operations performed by PHP engine. When PHP scripts are stored on a remote universal naming convention (UNC) file share, the file operations introduce a significant performance overhead. The PHP bytecode (opcode) cache is used to store the compiled script bytecode in shared memory so that it can be reused by the PHP engine for subsequent executions of the same script.Р вЂќР’В®ven with the PHP bytecode cache enabled, the PHP engine has to accesses the script files on a file system. The reading, parsing, and compilation operations put additional load on the Web server's CPU and file system and thus affect the overall performance of a PHP Web application. This means that on a Web server, the PHP engine reads, parses, compiles, and executes a PHP script each time that it is requested by a Web client. PHP is a script processing engine that reads an input stream of data that contains text and/or PHP instructions and produces another stream of data, most commonly in the HTML format. The Windows Cache Extension includes three different types of caches: All that is required is that the extension is enabled and loaded by the PHP engine.

PHP 5.2 IIS COMPATIBILITY CODE

Any PHP application can take advantage of the functionality provided by the Windows Cache Extension for PHP without any code modifications. The Windows Cache Extension for PHP is a PHP accelerator that is used to significantly increase the speed of PHP applications running on the WindowsР вЂ™Р’В® operating system.

Php 5.2 iis compatibility