TheCoderRaman · October 5, 2023 10:38 · Aug 16, 2017 · Aug 9, 2017
diff --git a/downloader.php b/downloader.php
@@ -0,0 +1,128 @@
+#!/usr/bin/php
+<?php
+
+/**
+ * Usage:
+ * php downloader.php http://path.to/remote/file.ext /local/file/path
+ *
+ * Output:
+ * [###############################################################################################     ] 96%
+ */
+
+/**
+ * Class Downloader
+ */
+class Downloader
+{
+    /**
+     * @var string
+     */
+    private $url;
+    /**
+     * @var string
+     */
+    private $destination;
+
+    /**
+     * Downloader constructor.
+     * @param string $url
+     * @param string $destination
+     */
+    public function __construct(string $url, string $destination)
+    {
+        $this->url = $this->prepareUrl($url);
+        $this->destination = $this->prepareDestination($destination);
+    }
+
+    /**
+     * @param string $url
+     * @return string
+     */
+    private function prepareUrl(string $url): string
+    {
+        if (!filter_var($url, FILTER_VALIDATE_URL)) {
+            $this->stderr('Invalid URL');
+            die;
+        }
+
+        return $url;
+    }
+
+    /**
+     * @param string $output
+     */
+    private function stderr(string $output): void
+    {
+        fwrite(STDERR, $output);
+    }
+
+    /**
+     * @param string $destination
+     * @return string
+     */
+    private function prepareDestination(string $destination): string
+    {
+        $fileName = basename($destination);
+        $dirName = realpath(dirname($destination));
+        if (!$dirName) {
+            $this->stderr('Check the destination path of file');
+            die;
+        }
+
+        return $dirName . DIRECTORY_SEPARATOR . $fileName;
+    }
+
+    /**
+     *
+     */
+    public function download(): void
+    {
+        $ch = curl_init();
+        $fp = fopen($this->destination, 'wb');
+
+        curl_setopt_array($ch, [
+            CURLOPT_URL => $this->url,
+            CURLOPT_HEADER => false,
+            CURLOPT_FOLLOWLOCATION => true,
+            CURLOPT_FILE => $fp,
+            CURLOPT_PROGRESSFUNCTION => [$this, 'progress'],
+            CURLOPT_NOPROGRESS => false,
+            CURLOPT_SSL_VERIFYPEER => false,
+            CURLOPT_FAILONERROR => true
+        ]);
+
+        curl_exec($ch);
+
+        if (curl_errno($ch)) {
+            $this->stderr('Error: ' . curl_error($ch));
+            die;
+        }
+
+        curl_close($ch);
+        fclose($fp);
+    }
+
+    /**
+     * @param $resource
+     * @param int $download_size
+     * @param int $downloaded
+     * @param int $upload_size
+     * @param int $uploaded
+     */
+    private function progress($resource, $download_size = 0, $downloaded = 0, $upload_size = 0, $uploaded = 0): void
+    {
+        $percent = $download_size > 0 && $downloaded > 0 ? ceil($downloaded * 100 / $download_size) : 0;
+        $this->stdout('[' . str_pad('', $percent, '#') . str_pad('', 100 - $percent) . "] $percent%\r");
+    }
+
+    /**
+     * @param string $output
+     */
+    private function stdout(string $output): void
+    {
+        fwrite(STDOUT, $output);
+    }
+}
+
+$dw = new Downloader($argv[1], $argv[2]);
+$dw->download();