下载远程文件

src/functions.php

@@ -813,4 +813,40 @@ if (!function_exists('get_images_url')) {
         preg_match('/<img.+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i',$str,$match);
         return $match;
     }
+}
+
+
+if (!function_exists('download_file')) {
+    /**
+     * 下载远程文件
+     * @param $url 远程文件路径
+     * @param null $path 系统保存路径
+     * @return string
+     */
+    function download_file($url, $path = null)
+    {
+        $filename = trim(pathinfo($url, PATHINFO_FILENAME));
+        $ext = strtolower(pathinfo($url, PATHINFO_EXTENSION));
+        $filename = "$filename.$ext";
+        $root = config('server.settings.document_root', BASE_PATH . '/public');
+        $path = $path ? $path : '/download/files';
+        $savePath = $root . $path;
+        if (!is_dir($savePath)) {
+            // 判断路径是否存在,不存在,则创建
+            mkdir($savePath, 0777, true);
+        }
+        $filePath = $savePath . '/' . $filename;
+        if (!file_exists($filePath)) {
+            $ch = curl_init();
+            curl_setopt($ch, CURLOPT_URL, $url);
+            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
+            $file = curl_exec($ch);
+            curl_close($ch);
+            $resource = fopen($filePath, 'a');
+            fwrite($resource, $file);
+            fclose($resource);
+        }
+        return $path . '/' . $filename;;
+    }
 }
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