laravel new blog not work mockery/mockery 1.4.0 - laravel

Question

Today I wanted to create a new project with Laravel with this command
laravel new blog
But I get this error
Crafting application...
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Your requirements could not be resolved to an installable set of packages.
Problem 1
- Installation request for mockery/mockery 1.4.0 -> satisfiable by mockery/mockery[1.4.0].
- mockery/mockery 1.4.0 requires php ^7.3.0 -> your PHP version (7.2.23) does not satisfy that requirement.
Why should php7.3 be read when Laravel himself says at least php7.2.5 ???

Answer 1

Run composer update.
The reason:
Your PHP version is too low. You've got 7.2.23 installed, and mockery/mockery 1.4 requires 7.3.0
The best solution is to upgrade your PHP version. Alternatively, you can reduce mockery's version to 1.3.1, which only requires PHP 5.6 or above.
My bug report can be found here
As of 2020-05-21, the zip files that laravel new ___ uses will try to install mockery/mockery version 1.4. This won't work with versions of PHP below 7.3. In order to fix this, run composer update, and mockery will be downgraded to a compatible version.

Answer 2

I had the same problem today for new Laravel projects. The composer.json file was showing "mockery/mockery": "^1.3.1" but still was showing the same error. Delete also the composer.lock file and run composer install.

Answer 3

Assuming you are trying to create a new laravel project called blog this is what I did to fix the error after running laravel new blog
cd into blog
run composer update
Create a .env file. You can just make a copy of .env.example and rename the copy to .env. In case you try to start the dev server using php artisan serve and the app launches with a 500 error, run these commands:
php artisan key:generate
php artisan cache:clear
php artisan config:clear
composer dump-autoload

Answer 4

I had the problem when trying to create new Laravel applications,I updated php version using the following commands and it worked.
sudo apt install software-properties-common
sudo add-apt-repository ppa:ondrej/php
sudo apt install -y php7.4 php7.4-gd php7.4-mbstring php7.4-xml

Answer 5

Delete the composer.lock file and run composer again
composer install

Answer 6

You can just run
composer create-project --prefer-dist laravel/laravel <project_name>
It'll automatically fall-back to mockery^1.3.1

Answer 7

I also faced these problems.
Problem 1
- Installation request for facade/ignition-contracts 1.0.2 -> satisfiable by facade/ignition-contracts[1.0.2].
- facade/ignition-contracts 1.0.2 requires php ^7.3|^8.0 -> your PHP version (7.2.34) does not satisfy that requirement.
Problem 2
- Installation request for mockery/mockery 1.4.2 -> satisfiable by mockery/mockery[1.4.2].
- mockery/mockery 1.4.2 requires php ^7.3 || ^8.0 -> your PHP version (7.2.34) does not satisfy that requirement.
Problem 3
- facade/ignition-contracts 1.0.2 requires php ^7.3|^8.0 -> your PHP version (7.2.34) does not satisfy that requirement.
- nunomaduro/collision v4.2.0 requires facade/ignition-contracts ^1.0 -> satisfiable by facade/ignition-contracts[1.0.2].
- Installation request for nunomaduro/collision v4.2.0 -> satisfiable by nunomaduro/collision[v4.2.0].
I had deleted the composer.lock file and executed composer install command.
My problem solved.

Answer 8

This might be stale, the issue here is that the php needs to be updated to version that will be compatible.
delete the composer.lock file and autoload file in vendor i.e vendor/autoload in your project
upgrade php version from php.net
run composer install --no scripts
run composer update
php artisan migrate
php artisan key:generate