呼叫时间传递引用已弃用？

Question

I read in many forums to remove the ampersand (&) before any $ listed in a variable, and I did, but doing so removes the functionality of the code I'm using. What should I do?

Demo here.

Code here:

<?php 

$val = $_GET['name'];
$path = "./images/".$val."/";
$file_array = array ();
readThisDir ( $path, &$file_array );

echo '<div class="gallery" style="display:block;" id="'.$val.'">';
echo '<ul>';
foreach ( $file_array as $file )
{
  if (strstr($file, "png")||strstr($file, "jpg")||strstr($file, "bmp")||strstr($file, "gif"))
  {
   list($width, $height) = getimagesize($file);
   $info = exif_read_data($file);           
   echo '<li><a href="javascript:void(0);"><img src="'.$file.'" width="'.$width.'" height="'.$height.'" alt="'.$file.'"/></a><span>'.$info['Title'].'<div class="gallerynav"><a href="javascript:void(0);" class="prevproject">&laquo;</a><a href="javascript:void(0);" class="nextproject">&raquo;</a></div></span></li>';
  }
}

echo '</ul>';
echo '</div>';

  function readThisDir ( $path, $arr )
  {
    if ($handle = opendir($path)) 
    {
        while (false !== ($file = readdir($handle))) 
        {
            if ($file != "." && $file != "..") 
            {
              if (is_dir ( $path."/".$file ))
              {
                readThisDir ($path."/".$file, &$arr);
              } else {
                $arr[] = $path."/".$file;
              }  
            }
        }
        closedir($handle);
    }
  }
?>

Answer 1

You are supposed to mark the pass-by-reference in the function declaration, not where the function is called.

...
function readThisDir ( $path, &$arr )
{ ...