PHP design Pattern Notes and summaries (2) developing the PSR-0 framework

"Three conventions of the PSR-0 specification":

① namespaces must be consistent with absolute paths

The first letter of the ② class name must be capitalized

③ except for the entry file, the ". PHP" must have only one class (cannot have executable code)

"Developing an infrastructure that complies with the PSR-0 specification":

① all use namespaces

② all PHP files must be loaded automatically and cannot have Include/require

③ Single Entry

Initial directory:

which

index.php Portal File

APP puts all the code related to business logic

Public to place common class files (which appears to cause conflicts, so the folder is renamed Common)

Then add several files under the project folder:

Where common/loader.php implements the automatic loading function of the file, the code is as follows:

<?PHP/*implement file Auto-loading function*/namespace Common;classloader{Static functionAutoLoad$class){        //Var_dump ($class);//string ' Common\object ' (length=13)//$file = BASEDIR. ' /'. Str_replace (' \ \ ', '/', $class).        PHP '; Var_dump ($file);//string ' d:\practise\php\design\psr0/common/object.php ' (length=45)                requireBASEDIR. ' /‘.Str_replace(‘\\‘, ‘/‘,$class).‘. Php; }}

common/object.php:

<? phpnamespace Common; class Object {    staticfunction  Test () {        echo__method__, ' < Br> ';    }} // there must be no executable statement other than the object class

app/controller/home/index.php:

<? phpnamespace app\controller\home; class index{    staticfunction  Test () {        echo__method__, ' <br> ';    }}

When you run the Portal file index.php, app/controller/home/index.php and common/object.php are loaded automatically

<? PHP Define // defining a root directory constant include BASEDIR. ' /common/loader.php '; Spl_autoload_register (' \\common\\loader::autoload ')//Register AutoLoad in the automatic loading of PHP common\Object::test (); App\controller\home\index:: Test ();

Page output:

common\Object::testapp\controller\home\index:: Test

PHP design Pattern Notes and summaries (2) developing the PSR-0 framework