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In software, a data access object (DAO) is a pattern that provides an abstract interface to some type of database or other persistence mechanism. By mapping application calls to the persistence layer, the DAO provides data operations without exposing database details. This isolation supports the single responsibility principle.
The procedures would be called from a method inside the class, which would return an object containing the requested values. Or, the insert, delete and update commands could be executed within simple functions like registeruser or loginuser stored within the data access layer.
The project's initial commit was made on April 13, 2006. As the project became more mature, the adoption began to pick up. Before long, the community was active and development was receiving regular contributions, among others from the Google Summer of Code project. Doctrine 1.0.0 was released on September 1, 2008. [1]
DAO—Data Access Object; DAO—Data Access Objects; DAO—Disk-At-Once; DAP—Directory Access Protocol; DARPA—Defense Advanced Research Projects Agency; DAS—Direct Attached Storage; DAT—Digital Audio Tape; DB—Database; DSKT—Desktop; DBA—Database Administrator; DBCS—Double Byte Character Set; DBMS—Database Management System ...
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The PHP Standard Recommendation (PSR) is a PHP specification published by the PHP Framework Interop Group. Similar to Java Specification Request for Java, it serves the standardization of programming concepts in PHP. The aim is to enable interoperability of components and to provide a common technical basis for implementation of proven concepts ...
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]
PHPDoc is an adaptation of Javadoc format for the PHP programming language.It is still an informal standard for commenting PHP code, but it is in the process of being formalized. [1]