1, using the composer init command generates composer.json files, and edit the autoload options as follows:
Which also contains two main options: files and psr-4.
files that need composer automatically help our library loaded (without class), as long as the file path in the array function library to write back.
psr-4 name implies, is based psr-4 ( http://www.php-fig.org/psr/psr-4/ ) autoloader library regular correspondence relationship, as long as the subject subsequent to "命名空间": "路径" the way information can write your own library.
After editing, just run it composer updateto complete the corresponding work.
Note: After each finished updating composer.json, must be performed after the composer update to take effect.
{
"name": "sui/test",
"description": "test",
"type": "project",
"require": {
"php": ">=5.3.10"
},
"autoload": {
"files":[],
"psr-4":{
"Test\\" :"core/"
}
}
}
Let's dig deep, explore autoload principle.
After we modify composer.json and execution update, we will modify ./vender/composer/autoload_psr4.php, such as one of my projects, which adds such a correspondence relationship:
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<?php
// autoload_psr4.php @generated by Composer
$vendorDir
= dirname(dirname(
__FILE__
));
$baseDir
= dirname(
$vendorDir
);
return
array
(
'Test\\'
=>
array
(
$baseDir
.
'/core'
),
);
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2, automatic load test
For example, we built on the same directory folder composer.json core, and write ClassTest categories:
1 <?php
2 namespace Test;
3 class ClassTest{
4 public function getName(){
5 return "test";
6 }
7 }
8 ?>
Write test.php, and run test.php, you can see the print on the screen "test" Content:
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<?php
require_once
__DIR__.
'/vendor/autoload.php'
;
$obj
=
new
\Test\ClassTest();
//实例化类
echo
$obj
->getName();
?>
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