Question

我不确定为什么这不起作用，有人可以帮忙吗？我想看看是否 $ lines [$ y] 与“../../ Files / Person / $ username / files / $ share_person_post”相同，但即使是，它也是没有运行代码。

if (file_exists("../../Files/Person/$username/shared.txt")) {
  $lines = file("../../Files/Person/$username/shared.txt");
  $size = sizeof($lines);
  $size = $size - 1;

  $shared_location = "Unknown";
  for($y = 0; $y <= $size; $y++) {
    echo $lines[$y];
    if ($lines[$y] == "../../Files/Person/$username/files/$share_person_post") {
      echo "Here";
      $z = $y + 1;
      $shared_location = $lines[$z];
      $fmsg = "<p>This file is already shared at $shared_location</p>";
      $ex = "0";
    }
  }
}

Answer 1

尝试使用explode，我知道当我抓取文本文件时，它们都是一个长字符串。它可能是我的服务器或php版本，但值得一试。

if (file_exists("../../Files/Person/$username/shared.txt"))
{
    $data = file("../../Files/Person/$username/shared.txt");
    $lines = explode("\n",$data);
    $size = count($lines);
    $size = $size - 1;

    $shared_location = "Unknown";
    for($y = 0; $y <= $size; $y++)
    {
        echo $lines[$y];
        if($lines[$y] == "../../Files/Person/$username/files/$share_person_post")
        {
            echo "Here";
            $z = $y + 1;
            $shared_location = $lines[$z];
            $fmsg = "<p>This file is already shared at 
            $shared_location</p>";
            $ex = "0";
        }
   }

}

为什么这个if语句不能处理数组中的item？

1 个答案: