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Zend OPcache [9] is an open source [10] component of Zend Server and Zend Server Community Edition bundled with the PHP language itself. [7] Zend OPcache speeds up PHP execution by opcode caching and optimization. It stores precompiled script bytecode in shared memory. As of version 7.0 it can store precompiled script bytecode on disk.
As of 21 January 2025 (two months after PHP 8.4's release), PHP is used as the server-side programming language on 75.0% of websites where the language could be determined; PHP 7 is the most used version of the language with 47.1% of websites using PHP being on that version, while 40.6% use PHP 8, 12.2% use PHP 5 and 0.1% use PHP 4.
In coding theory, Hamming(7,4) is a linear error-correcting code that encodes four bits of data into seven bits by adding three parity bits. It is a member of a larger family of Hamming codes , but the term Hamming code often refers to this specific code that Richard W. Hamming introduced in 1950.
The source code for the Zend Engine has been freely available under the Zend Engine License (although some parts are under the PHP License) since 1999, [5] as part of the official releases from php.net, as well as the official git repository or the GitHub mirror. Various volunteers contribute to the PHP/Zend Engine codebase.
PHP has hundreds of base functions and thousands more from extensions. Prior to PHP version 5.3.0, functions are not first-class functions and can only be referenced by their name, whereas PHP 5.3.0 introduces closures. [35] User-defined functions can be created at any time and without being prototyped. [35]
CakePHP ORM (object-relational mapping) is an advanced PHP hybrid of the active record pattern and the data mapper pattern, borrowing core concepts from both. The CakePHP ORM uses two primary object types, the table class representing database tables , and entity classes representing individual table rows .
Entities in Doctrine 2 are lightweight PHP Objects that contain persistable properties. A persistable property is an instance variable of the entity that is saved into and retrieved from the database by Doctrine's data mapping capabilities via the Entity Manager - an implementation of the data mapper pattern:
The GNOME Project, i.e. all the people involved with the development of the GNOME desktop environment, is the biggest contributor to GTK, and the GNOME Core Applications as well as the GNOME Games employ the newest GUI widgets from the cutting-edge version of GTK and demonstrates their capabilities.