Use of PHP dependency management tool Composer

: This article mainly introduces the use of the PHP dependency management tool Composer. if you are interested in the PHP Tutorial, refer to it. Today I saw the dependency management tool in PHP, so I learned to try it out:

Environment: win7

I. Installation

1. confirm that the openssl module is enabled in PHP (used when using the https URL );

Modify the environment variable path and add c: \ xampp \ php

Open the command line and enter:

php -version

Display:

Run the cd command to change the current path to the project root directory, and then run the command to download and install:

php -r "readfile('http://getcomposer.org/installer');" | php

Here I use the http URL. If curl exists, run the following command:

curl -sS https://getcomposer.org/installer | php

The official website prompts you to download the installation package composer-setup.exe. Unfortunately, I saw it late and didn't try it out.

Add the composer. bat text file to the project root directory and execute the following command on the command line:

echo @php "%~dp0composer.phar" %*>composer.bat

Close and re-open the command line and enter the command:

composer -V

The output version is displayed.

II. example: the project must use the monolog library for output logs.

Create a composer. json file in the project and enter the following content:

{    "require": {        "monolog/monolog": "1.0.*"    }}

Run the following command on the cmd command line:

composer install

The required website may not be properly downloaded for some reasons. The prompt content may be:

Failed to enable cryptofailed to open stream: operation failed

At this time, you need to consider solving your network problems.

After the project is successfully run, the vendor folder appears in the project folder.

Example:

 pushHandler(new Monolog\Handler\StreamHandler('app.log', Monolog\Logger::WARNING));$log->addWarning('Foo');?>

III. others

Update itself:

Composer self-update

The above describes the use of the PHP dependency management tool Composer, including some content, and hope to be helpful to friends who are interested in the PHP Tutorial.