What should I do if the php download file is garbled?

Solution to garbled code when downloading files in php: First use the ob_clean() function to discard the contents of the output buffer; then use the ob_flush() function to flush out the contents of the output buffer; and finally download the file.

Function introduction:

The ob_clean() function is used to discard the contents of the output buffer.

ob_flush() flushes out (sends out) the contents of the output buffer.

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Solution:

Before downloading the file, use the above two functions for processing. Then download it again, so that there will be no garbled characters.

Code implementation:

<?php
/**
 * 强制下载文件
 * @param string $filename 变量
 * @param string $name 变量
 * @return mixed
 */
function download($filename,$name){
  if ((isset($filename))&&(file_exists($filename))){
     header("Content-length: ".filesize($filename));
     header(&#39;Content-Type: application/octet-stream&#39;);
     header(&#39;Content-Disposition: attachment; filename="&#39; . $name . &#39;"&#39;);
     ob_clean();  
     flush();
     readfile("$filename");
  } else {
     $info="Looks like file does not exist!";
     return $info;
  }
}
?>

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