Summarize the problems of php artisan migrate in laravel

This article mainly summarizes and introduces the precautions for using php artisan migrate under laravel 5.1. The introduction in the article is very detailed and has certain reference and learning value for everyone to use php artisan migrate. Friends who need it can take a look below. Bar. I hope to be helpful.

PHP artisan migrateThe command is a very important issue in laravel, but you need to pay attention to several situations when using it:

(1) Create a file in the migration folder For a new table, use the php artisan make:migration statement

php artisan already has powerful functions, so don’t create a new table yourself

(2) composer dump- The use of autoload

composer dump-autoload is used to update the vendor/composer/autoload_classmap.php file. This file has many configurations. This file is called in advance when using the php artisan command. When adding a new table, execute this command first and then use migrate. When deleting a representation, first use migrate:rollback, then use composer to delete the file.

Executing this statement will modify all files in the vendor/composer/ folder within the laravel framework

(3) Install composer

It is possible that the command does not show up when using composer exists, then you need to install composer.

  php -r "readfile('https://getcomposer.org/installer');" > composer-setup.php

  php composer-setup.php

  php -r "unlink('composer-setup.php');"

The composer-setup.php script downloaded by executing the first command will simply detect the parameter settings in php.ini. If some parameters are not set correctly, a warning will be given; then download the latest version. composer.phar file to the current directory.

The functions of the above three commands are:

• Download the installation script (composer-setup.php) to the current directory.

• Perform the installation process.

• Delete the installation script -- composer-setup.php.
  

Global installation is to install Composer to the path included in the system environment variable PATH, and then you can directly execute the composer command in the command line window.

Mac or Linux system: Open a command line window and execute the following command to move the composer.phar file downloaded earlier to the /usr/local/bin/ directory:

sudo mv composer.phar /usr/local/bin/composer

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