PHP Fatal error Uncaught ArgumentCountError
PHP Fatal error Uncaught ArgumentCountError array_merge() – This is the error I get when I want to run “composer install” or “composer update”. In this terminal an error appears which makes me confused. What’s wrong with this error.
But after researching, I get the result that the “composer.json” file is not found here. Here is the error I received:
PHP Fatal error: Uncaught ArgumentCountError: array_merge() does not accept unknown named parameters in /usr/share/php/Composer/DependencyResolver/DefaultPolicy.php:84
Stack trace:
#0 [internal function]: array_merge()
#1 /usr/share/php/Composer/DependencyResolver/DefaultPolicy.php(84): call_user_func_array()
#2 /usr/share/php/Composer/DependencyResolver/Solver.php(387): Composer\DependencyResolver\DefaultPolicy->selectPreferredPackages()
#3 /usr/share/php/Composer/DependencyResolver/Solver.php(740): Composer\DependencyResolver\Solver->selectAndInstall()
#4 /usr/share/php/Composer/DependencyResolver/Solver.php(231): Composer\DependencyResolver\Solver->runSat()
#5 /usr/share/php/Composer/Installer.php(489): Composer\DependencyResolver\Solver->solve()
#6 /usr/share/php/Composer/Installer.php(232): Composer\Installer->doInstall()
#7 /usr/share/php/Composer/Command/UpdateCommand.php(163): Composer\Installer->run()
#8 /usr/share/php/Symfony/Component/Console/Command/Command.php(255): Composer\Command\UpdateCommand->execute()
#9 /usr/share/php/Symfony/Component/Console/Application.php(934): Symfony\Component\Console\Command\Command->run()
#10 /usr/share/php/Symfony/Component/Console/Application.php(273): Symfony\Component\Console\Application->doRunCommand()
#11 /usr/share/php/Composer/Console/Application.php(281): Symfony\Component\Console\Application->doRun()
#12 /usr/share/php/Symfony/Component/Console/Application.php(149): Composer\Console\Application->doRun()
#13 /usr/share/php/Composer/Console/Application.php(113): Symfony\Component\Console\Application->run()
#14 /usr/bin/composer(62): Composer\Console\Application->run()
#15 {main}
thrown in /usr/share/php/Composer/DependencyResolver/DefaultPolicy.php on line 84
Fatal error: Uncaught ArgumentCountError: array_merge() does not accept unknown named parameters in /usr/share/php/Composer/DependencyResolver/DefaultPolicy.php:84
Stack trace:
#0 [internal function]: array_merge()
#1 /usr/share/php/Composer/DependencyResolver/DefaultPolicy.php(84): call_user_func_array()
#2 /usr/share/php/Composer/DependencyResolver/Solver.php(387): Composer\DependencyResolver\DefaultPolicy->selectPreferredPackages()
#3 /usr/share/php/Composer/DependencyResolver/Solver.php(740): Composer\DependencyResolver\Solver->selectAndInstall()
#4 /usr/share/php/Composer/DependencyResolver/Solver.php(231): Composer\DependencyResolver\Solver->runSat()
#5 /usr/share/php/Composer/Installer.php(489): Composer\DependencyResolver\Solver->solve()
#6 /usr/share/php/Composer/Installer.php(232): Composer\Installer->doInstall()
#7 /usr/share/php/Composer/Command/UpdateCommand.php(163): Composer\Installer->run()
#8 /usr/share/php/Symfony/Component/Console/Command/Command.php(255): Composer\Command\UpdateCommand->execute()
#9 /usr/share/php/Symfony/Component/Console/Application.php(934): Symfony\Component\Console\Command\Command->run()
#10 /usr/share/php/Symfony/Component/Console/Application.php(273): Symfony\Component\Console\Application->doRunCommand()
#11 /usr/share/php/Composer/Console/Application.php(281): Symfony\Component\Console\Application->doRun()
#12 /usr/share/php/Symfony/Component/Console/Application.php(149): Composer\Console\Application->doRun()
#13 /usr/share/php/Composer/Console/Application.php(113): Symfony\Component\Console\Application->run()
#14 /usr/bin/composer(62): Composer\Console\Application->run()
#15 {main}
thrown in /usr/share/php/Composer/DependencyResolver/DefaultPolicy.php on line 84
How to Fix this PHP Error
Create a file called “composer.json”. Then open the composer.json file and fill it with the following data:
{
"name": "codeigniter4/appstarter",
"type": "project",
"description": "CodeIgniter4 starter app",
"homepage": "https://codeigniter.com",
"license": "MIT",
"require": {
"php": "^7.3 || ^8.0",
"codeigniter4/framework": "^4"
},
"require-dev": {
"fakerphp/faker": "^1.9",
"mikey179/vfsstream": "^1.6",
"phpunit/phpunit": "^9.1"
},
"suggest": {
"ext-fileinfo": "Improves mime type detection for files"
},
"autoload": {
"psr-4": {
"App\\": "app",
"Config\\": "app/Config"
},
"exclude-from-classmap": [
"**/Database/Migrations/**"
]
},
"autoload-dev": {
"psr-4": {
"Tests\\Support\\": "tests/_support"
}
},
"scripts": {
"test": "phpunit"
},
"support": {
"forum": "http://forum.codeigniter.com/",
"source": "https://github.com/codeigniter4/CodeIgniter4",
"slack": "https://codeigniterchat.slack.com"
}
}After that, you can install composer with the command “composer install” or “composer install –ignore-platform-reqs” and also “composer update”. Good luck.
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