vendor/sensio/distribution-bundle/Resources/skeleton/app/check.php

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<?php

require_once dirname(__FILE__).'/SymfonyRequirements.php';

$lineSize = 70;
$symfonyRequirements = new SymfonyRequirements();
$iniPath = $symfonyRequirements->getPhpIniConfigPath();

echo_title('Symfony Requirements Checker');

echo '> PHP is using the following php.ini file:'.PHP_EOL;
if ($iniPath) {
    echo_style('green', '  '.$iniPath);
} else {
    echo_style('yellow', '  WARNING: No configuration file (php.ini) used by PHP!');
}

echo PHP_EOL.PHP_EOL;

echo '> Checking Symfony requirements:'.PHP_EOL.'  ';

$messages = array();
foreach ($symfonyRequirements->getRequirements() as $req) {
    if ($helpText = get_error_message($req, $lineSize)) {
        echo_style('red', 'E');
        $messages['error'][] = $helpText;
    } else {
        echo_style('green', '.');
    }
}

$checkPassed = empty($messages['error']);

foreach ($symfonyRequirements->getRecommendations() as $req) {
    if ($helpText = get_error_message($req, $lineSize)) {
        echo_style('yellow', 'W');
        $messages['warning'][] = $helpText;
    } else {
        echo_style('green', '.');
    }
}

if ($checkPassed) {
    echo_block('success', 'OK', 'Your system is ready to run Symfony projects');
} else {
    echo_block('error', 'ERROR', 'Your system is not ready to run Symfony projects');

    echo_title('Fix the following mandatory requirements', 'red');

    foreach ($messages['error'] as $helpText) {
        echo ' * '.$helpText.PHP_EOL;
    }
}

if (!empty($messages['warning'])) {
    echo_title('Optional recommendations to improve your setup', 'yellow');

    foreach ($messages['warning'] as $helpText) {
        echo ' * '.$helpText.PHP_EOL;
    }