JSON 循环给出的数组比预期的多一个

Question

我的 PHP 代码有一个奇怪的情况。
基本上我想输出我在一个目录中所有 JSON 文件的 JSON，但由于一个意想不到的原因，它给了我 两个 JSON 数组，一个是错误的，一个是正确的。
代码如下：

$files = glob("players/*");
$nFiles = count($files);

foreach($files as $file){

  $jsonArray[] = array(

    "name" => "a name",
    "reason" => "a reason",
    "date" => "a date"

  );

  echo json_encode($jsonArray);
}

输出：

[{"name":"a name","reason":"a reason","date":"a date"}] -- here the loop stops (idk why) and it begins again -- [{"name":"a name","reason":"a reason","date":"a date"},{"name":"a name","reason":"a reason","date":"a date"}]

Answer 1

您应该将 echo 语句放在 foreach 循环之外：

$files = glob("players/*");
$nFiles = count($files);

foreach($files as $file){

  $jsonArray[] = array(

    "name" => "a name",
    "reason" => "a reason",
    "date" => "a date"

  );
}
  echo json_encode($jsonArray);