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PSDI Army
yii2
Commits
24108266
Commit
24108266
authored
Nov 10, 2014
by
Qiang Xue
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Merge branch 'master' of
git://github.com/yiisoft/yii2
parents
a61c8692
bf47650f
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concept-autoloading.md
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docs/guide/concept-autoloading.md
View file @
24108266
...
...
@@ -3,7 +3,7 @@ Class Autoloading
Yii relies on the
[
class autoloading mechanism
](
http://www.php.net/manual/en/language.oop5.autoload.php
)
to locate and include all required class files. It provides a high-performance class autoloader that is compliant to the
[
PSR-4 standard
](
https://github.com/php-fig/fig-standards/blob/master/
proposed/psr-4-autoloader/psr
-4-autoloader.md
)
.
[
PSR-4 standard
](
https://github.com/php-fig/fig-standards/blob/master/
accepted/PSR
-4-autoloader.md
)
.
The autoloader is installed when you include the
`Yii.php`
file.
> Note: For simplicity of description, in this section we will only talk about autoloading of classes. However, keep in
...
...
@@ -27,7 +27,7 @@ For example, if a class name and namespace is `foo\bar\MyClass`, the [alias](con
would be
`@foo/bar/MyClass.php`
. In order for this alias to be resolvable into a file path,
either
`@foo`
or
`@foo/bar`
must be a
[
root alias
](
concept-aliases.md#defining-aliases
)
.
When using the
[
Basic Application Template
](
start-
basic
.md
)
, you may put your classes under the top-level
When using the
[
Basic Application Template
](
start-
installation
.md
)
, you may put your classes under the top-level
namespace
`app`
so that they can be autoloaded by Yii without the need of defining a new alias. This is because
`@app`
is a
[
predefined alias
](
concept-aliases.md#predefined-aliases
)
, and a class name like
`app\components\MyClass`
can be resolved into the class file
`AppBasePath/components/MyClass.php`
, according to the algorithm just described.
...
...
@@ -66,7 +66,7 @@ also install those.
When using the Yii autoloader together with other autoloaders, you should include the
`Yii.php`
file
*after*
all other autoloaders are installed. This will make the Yii autoloader the first one responding to
any class autoloading request. For example, the following code is extracted from
the
[
entry script
](
structure-entry-scripts.md
)
of the
[
Basic Application Template
](
start-
basic
.md
)
. The first
the
[
entry script
](
structure-entry-scripts.md
)
of the
[
Basic Application Template
](
start-
installation
.md
)
. The first
line installs the Composer autoloader, while the second line installs the Yii autoloader:
```
php
...
...
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