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File Content: `PhpSubprocess.php`

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process;

use Symfony\Component\Process\Exception\LogicException;
use Symfony\Component\Process\Exception\RuntimeException;

/**
 * PhpSubprocess runs a PHP command as a subprocess while keeping the original php.ini settings.
 *
 * For this, it generates a temporary php.ini file taking over all the current settings and disables
 * loading additional .ini files. Basically, your command gets prefixed using "php -n -c /tmp/temp.ini".
 *
 * Given your php.ini contains "memory_limit=-1" and you have a "MemoryTest.php" with the following content:
 *
 *     <?php var_dump(ini_get('memory_limit'));
 *
 * These are the differences between the regular Process and PhpSubprocess classes:
 *
 *     $p = new Process(['php', '-d', 'memory_limit=256M', 'MemoryTest.php']);
 *     $p->run();
 *     print $p->getOutput()."\n";
 *
 * This will output "string(2) "-1", because the process is started with the default php.ini settings.
 *
 *     $p = new PhpSubprocess(['MemoryTest.php'], null, null, 60, ['php', '-d', 'memory_limit=256M']);
 *     $p->run();
 *     print $p->getOutput()."\n";
 *
 * This will output "string(4) "256M"", because the process is started with the temporarily created php.ini settings.
 *
 * @author Yanick Witschi <yanick.witschi@terminal42.ch>
 * @author Partially copied and heavily inspired from composer/xdebug-handler by John Stevenson <john-stevenson@blueyonder.co.uk>
 */
class PhpSubprocess extends Process
{
    /**
     * @param array       $command The command to run and its arguments listed as separate entries. They will automatically
     *                             get prefixed with the PHP binary
     * @param string|null $cwd     The working directory or null to use the working dir of the current PHP process
     * @param array|null  $env     The environment variables or null to use the same environment as the current PHP process
     * @param int         $timeout The timeout in seconds
     * @param array|null  $php     Path to the PHP binary to use with any additional arguments
     */
    public function __construct(array $command, ?string $cwd = null, ?array $env = null, int $timeout = 60, ?array $php = null)
    {
        if (null === $php) {
            $executableFinder = new PhpExecutableFinder();
            $php = $executableFinder->find(false);
            $php = false === $php ? null : array_merge([$php], $executableFinder->findArguments());
        }

        if (null === $php) {
            throw new RuntimeException('Unable to find PHP binary.');
        }

        $tmpIni = $this->writeTmpIni($this->getAllIniFiles(), sys_get_temp_dir());

        $php = array_merge($php, ['-n', '-c', $tmpIni]);
        register_shutdown_function('unlink', $tmpIni);

        $command = array_merge($php, $command);

        parent::__construct($command, $cwd, $env, null, $timeout);
    }

    public static function fromShellCommandline(string $command, ?string $cwd = null, ?array $env = null, mixed $input = null, ?float $timeout = 60): static
    {
        throw new LogicException(\sprintf('The "%s()" method cannot be called when using "%s".', __METHOD__, self::class));
    }

    public function start(?callable $callback = null, array $env = []): void
    {
        if (null === $this->getCommandLine()) {
            throw new RuntimeException('Unable to find the PHP executable.');
        }

        parent::start($callback, $env);
    }

    private function writeTmpIni(array $iniFiles, string $tmpDir): string
    {
        if (false === $tmpfile = @tempnam($tmpDir, '')) {
            throw new RuntimeException('Unable to create temporary ini file.');
        }

        // $iniFiles has at least one item and it may be empty
        if ('' === $iniFiles[0]) {
            array_shift($iniFiles);
        }

        $content = '';

        foreach ($iniFiles as $file) {
            // Check for inaccessible ini files
            if (($data = @file_get_contents($file)) === false) {
                throw new RuntimeException('Unable to read ini: '.$file);
            }
            // Check and remove directives after HOST and PATH sections
            if (preg_match('/^\s*\[(?:PATH|HOST)\s*=/mi', $data, $matches, \PREG_OFFSET_CAPTURE)) {
                $data = substr($data, 0, $matches[0][1]);
            }

            $content .= $data."\n";
        }

        // Merge loaded settings into our ini content, if it is valid
        $config = parse_ini_string($content);
        $loaded = ini_get_all(null, false);

        if (false === $config || false === $loaded) {
            throw new RuntimeException('Unable to parse ini data.');
        }

        $content .= $this->mergeLoadedConfig($loaded, $config);

        // Work-around for https://bugs.php.net/bug.php?id=75932
        $content .= "opcache.enable_cli=0\n";

        if (false === @file_put_contents($tmpfile, $content)) {
            throw new RuntimeException('Unable to write temporary ini file.');
        }

        return $tmpfile;
    }

    private function mergeLoadedConfig(array $loadedConfig, array $iniConfig): string
    {
        $content = '';

        foreach ($loadedConfig as $name => $value) {
            if (!\is_string($value)) {
                continue;
            }

            if (!isset($iniConfig[$name]) || $iniConfig[$name] !== $value) {
                // Double-quote escape each value
                $content .= $name.'="'.addcslashes($value, '\\"')."\"\n";
            }
        }

        return $content;
    }

    private function getAllIniFiles(): array
    {
        $paths = [(string) php_ini_loaded_file()];

        if (false !== $scanned = php_ini_scanned_files()) {
            $paths = array_merge($paths, array_map('trim', explode(',', $scanned)));
        }

        return $paths;
    }
}
Name	Size	Permission
Exception	---	0755
Messenger	---	0755
Pipes	---	0755
CHANGELOG.md	4224 bytes	0644
ExecutableFinder.php	3519 bytes	0644
InputStream.php	2469 bytes	0644
LICENSE	1068 bytes	0644
PhpExecutableFinder.php	2311 bytes	0644
PhpProcess.php	2445 bytes	0644
PhpSubprocess.php	6064 bytes	0644
Process.php	52711 bytes	0644
ProcessUtils.php	1753 bytes	0644
README.md	472 bytes	0644
composer.json	671 bytes	0644
File Content: PhpSubprocess.php

File Content: `PhpSubprocess.php`
