Psr 0 namespace
In other words: the project root folder is by default marked as Source and every directory created under it is considered a separate namespace. This complies with the PSR0, also known as the Autoloading Standard, which prescribes that classes and namespaces in PHP should match the directory and file structure, and viceversa.In other words: every directory created under the Source Root will be considered a separate namespace. PSR0, also known as the Autoloading Standard, prescribes that classes and namespaces in PHP should match the directory and file structure, and viceversa. PSR4 allows specifying a namespace prefix for a given directory explicitly. psr 0 namespace
PSR0 and PSR4 both are autoloading mechanisms. PSR4 is now the preferred way of autoloading. PSR4. PSR4 says Tell me the Namespace prefix and its location, every part after this Namespace prefix, it will map to directories, within the directory. Example:
If you're within a namespace then classes are referenced relatively to the namespace so you need to either do new \PDO to indicate it's a root class or add a use PDO in the top under the namespace definition. apokryfos Nov 29 at 10: 16 Deprecated As of PSR0 has been marked as deprecated. PSR4 is now recommended as an alternative. The following describes the mandatory requirements that must be adhered to for autoloader interoperability. Mandatory. A fullyqualified namespace and class must have the following structure \\(\) Each namespace must have a toplevelpsr 0 namespace This complies with the PSR0, also known as the Autoloading Standard, which prescribes that classes and namespaces in PHP should match the directory and file structure, and viceversa. According to PSR4, any directory can be explicitly assigned a namespace prefix.
PSR0 looks at the namespace of a class and discerns its location on the hard drive from that bit of information. For example, the class \Zend\Mail\Message would lead to PSR0 also supports underscores in the class names as an alternative, to make transitioning from 5. 2 and earlier easier. psr 0 namespaceRating: 4.84 / Views: 803