如何保存 Base64 图像服务器端

Question

如何保存图像服务器端 我有此代码，但由于某种原因，我上传到服务器的图像被保存为文本/x 通用。 我该怎么做才能解决这个问题？

<?php
  function base64_to_image($base64_string) {
      $data = explode(',', $base64_string);
      $ext = "";
      switch ($data[0]) {
          case "data:image/png;base64";
              $ext = "png";
              break;
          case "data:image/jpg;base64";
              $ext = "jpg";
              break;
          case "data:image/jpeg;base64";
              $ext = "jpg";
              break;
          case "data:image/gif;base64";
              $ext = "gif";
              break;
      }
      $milli = round(microtime(true) * 1000);
      $output_file = "img/" . date('Y-m-d_H:i:s') . "." . $milli . "." . $ext; 
      $ifp = fopen($output_file, "wb"); 
    
      fwrite($ifp, base64_decode($data[1])); 
      fclose($ifp); 
      return $ifp; 
  }
  $file = base64_to_image($_POST['file']);
  var_dump($file);
?>

Answer 1

我使用此功能保存 base64 图像，它工作正常。试试这个——

function saveBase64ImagePng($base64Image, $imageDir)
{
    //set name of the image file
    $fileName =  'test.png';
    $base64Image = trim($base64Image);
    $base64Image = str_replace('data:image/png;base64,', '', $base64Image);
    $base64Image = str_replace('data:image/jpg;base64,', '', $base64Image);
    $base64Image = str_replace('data:image/jpeg;base64,', '', $base64Image);
    $base64Image = str_replace('data:image/gif;base64,', '', $base64Image);
    $base64Image = str_replace(' ', '+', $base64Image);
    $imageData = base64_decode($base64Image);
    //Set image whole path here 
    $filePath = $imageDir . $fileName;

   file_put_contents($filePath, $imageData);

}

希望这对您有所帮助。