Initial

system/Commands/Server/Serve.php

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+<?php
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Commands\Server;
+
+use CodeIgniter\CLI\BaseCommand;
+use CodeIgniter\CLI\CLI;
+
+/**
+ * Launch the PHP development server
+ *
+ * Not testable, as it throws phpunit for a loop :-/
+ *
+ * @codeCoverageIgnore
+ */
+class Serve extends BaseCommand
+{
+    /**
+     * Group
+     *
+     * @var string
+     */
+    protected $group = 'CodeIgniter';
+
+    /**
+     * Name
+     *
+     * @var string
+     */
+    protected $name = 'serve';
+
+    /**
+     * Description
+     *
+     * @var string
+     */
+    protected $description = 'Launches the CodeIgniter PHP-Development Server.';
+
+    /**
+     * Usage
+     *
+     * @var string
+     */
+    protected $usage = 'serve';
+
+    /**
+     * Arguments
+     *
+     * @var array
+     */
+    protected $arguments = [];
+
+    /**
+     * The current port offset.
+     *
+     * @var int
+     */
+    protected $portOffset = 0;
+
+    /**
+     * The max number of ports to attempt to serve from
+     *
+     * @var int
+     */
+    protected $tries = 10;
+
+    /**
+     * Options
+     *
+     * @var array
+     */
+    protected $options = [
+        '--php'  => 'The PHP Binary [default: "PHP_BINARY"]',
+        '--host' => 'The HTTP Host [default: "localhost"]',
+        '--port' => 'The HTTP Host Port [default: "8080"]',
+    ];
+
+    /**
+     * Run the server
+     */
+    public function run(array $params)
+    {
+        // Collect any user-supplied options and apply them.
+        $php  = escapeshellarg(CLI::getOption('php') ?? PHP_BINARY);
+        $host = CLI::getOption('host') ?? 'localhost';
+        $port = (int) (CLI::getOption('port') ?? 8080) + $this->portOffset;
+
+        // Get the party started.
+        CLI::write('CodeIgniter development server started on http://' . $host . ':' . $port, 'green');
+        CLI::write('Press Control-C to stop.');
+
+        // Set the Front Controller path as Document Root.
+        $docroot = escapeshellarg(FCPATH);
+
+        // Mimic Apache's mod_rewrite functionality with user settings.
+        $rewrite = escapeshellarg(__DIR__ . '/rewrite.php');
+
+        // Call PHP's built-in webserver, making sure to set our
+        // base path to the public folder, and to use the rewrite file
+        // to ensure our environment is set and it simulates basic mod_rewrite.
+        passthru($php . ' -S ' . $host . ':' . $port . ' -t ' . $docroot . ' ' . $rewrite, $status);
+
+        if ($status && $this->portOffset < $this->tries) {
+            $this->portOffset++;
+
+            $this->run($params);
+        }
+    }
+}

system/Commands/Server/rewrite.php

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+<?php
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+/*
+ * CodeIgniter PHP-Development Server Rewrite Rules
+ *
+ * This script works with the CLI serve command to help run a seamless
+ * development server based around PHP's built-in development
+ * server. This file simply tries to mimic Apache's mod_rewrite
+ * functionality so the site will operate as normal.
+ */
+
+// @codeCoverageIgnoreStart
+// Avoid this file run when listing commands
+if (PHP_SAPI === 'cli') {
+    return;
+}
+
+$uri = urldecode(parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH));
+
+// Front Controller path - expected to be in the default folder
+$fcpath = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR;
+
+// Full path
+$path = $fcpath . ltrim($uri, '/');
+
+// If $path is an existing file or folder within the public folder
+// then let the request handle it like normal.
+if ($uri !== '/' && (is_file($path) || is_dir($path))) {
+    return false;
+}
+
+// Otherwise, we'll load the index file and let
+// the framework handle the request from here.
+require_once $fcpath . 'index.php';
+// @codeCoverageIgnoreEnd