What should I do if php composer cannot download the installation package?

php composer cannot download the installation package: 1. Configure domestic sources globally or configure the current project with domestic sources; 2. Use local sources for the current project; 3. Configure the agent through the command line and find the server and Just find the port yourself.

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer

What should I do if php composer cannot download the installation package? ?

composer Several solutions to the problem of being unable to download the installation package

##Why am I slow?

Under normal circumstances, the data of the composer installation package (mainly zip files) is usually downloaded from github.com.

Due to some unknown reasons, The connection speed of foreign websites is very slow. It does not even exist.
It is understandable that it is slow

Now the installation fails

Solution:

1.1 Global configuration of domestic sources Enter

composer config -g repo.packagist composer https://packagist.phpcomposer.com## on the command line

#Get it done

If you don’t want to use domestic sources, then

composer config -g --unset repos.packagist

---

1.2 Current project configuration domestic source

Enter the same level directory of project composer.json on the command line (usually the project root directory) Enter # on the command line
##composer config repo.packagist composer https://packagist.phpcomposer.com

is equivalent to directly modifying composer.json and adding

        {
            "type": "composer",
            "url": "https://asset-packagist.org"
        }

after modification under the repositories item Result

    "repositories": [
        {
            //我是以前的配置
        },
        {
            "type": "composer",
            "url": "https://asset-packagist.org"
        }
    ]

There is also a project composer.json installed by a friend that is Jiang Zi

    "repositories": {
        "packagist": {
            "type": "composer",
            "url": "https://packagist.phpcomposer.com"
        }
    }

According to the correct modification

    "repositories": [
        {
            "type": "composer",
            "url": "https://packagist.phpcomposer.com"
        },
        {
            "type": "composer",
            "url": "https://asset-packagist.org"
        }
    ]

No longer want to use domestic sources

composer config --unset repos.packagist
Or delete the corresponding added repositories
Using domestic sources is convenient, but not very stable. Some The package cannot be downloaded

---

2 The current project uses local sources

---

1) First put the downloaded installation package data into a folder, this article will be placed in composer Take the composerPackages folder in the same directory as .json as an example Generally, if the installation fails directly using composer, there will be a prompt indicating that the download of a certain file failed
Modify composer.json and add it under the repositories item

        {
	        "type": "path",
	        "url": "composerPackages/*",
	        "options": {
	            "symlink": true
	        }
        }

The modification is as follows

    "repositories": [
        {
            //我是以前的配置
        },
        {
	        "type": "path",
	        "url": "composerPackages/*",
	        "options": {
	            "symlink": true
	        }
        }
    ]

3.1 Configure the agent on the command line, find the server and port by yourself

---

1. Command line input
set http_proxy=proxy address:proxy port

For example, the proxy address is local 127.0.0.1 port 10809set http_proxy=127.0.0.1:10809

3.2 Add user environment variables to configure the proxy

---

##3.3 Configure the proxy when installing composer

---

Local After configuring the proxy, the corresponding proxy will be automatically selected. After selecting the proxy, composer will verify whether the proxy is available.

Recommended learning: "
PHP Video Tutorial" 《

composer tutorial》

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