php 将文件拆分为 $key=>$value 对，具有重复的键

Question

我一直在努力解决这个问题，但我只是大脑冻结了。

我有一个包含多行的文件，每行由“=”分隔成单独的数据：

// Example file. Syntax: <key>=<Value>

key1=value1

key1=value2

key1=value3

key2=value1

key2=value2

key3=value1

key3=value2

key3=value3

key3=value4

我需要将这个文件分解成单独的行，并将它们全部放入一个数组中，这样 key1 包含一个 value1、2、3 的数组，key2 有它的值，key3 有它的值，依此类推。有点像这样：

Array

(

    [key1] => Array

        (

        [0] => value1

        [1] => value2

        [2] => value3

        )

    [key2] => Array

        (

        [0] => value1

        [1] => value2

        )

    [key3] => Array

        (

        [0] => value1

        [1] => value2

        [2] => value3

        [3] => value4

        )

)

到目前为止，我有以下代码：

$loadFile = file('file.txt');

$returnArray = array();

foreach ($loadFile as $line) {

  $startWith = substr(trim($line), 0, 2);

    if (empty($line) || $startWith == '//') {

          continue;

  }

  list($key, $value) = explode('=', $line);

  $returnArray[$key] = $value;

}

return $returnArray;

然而，我得到的只是：

Array ( [key1] => value3 [key2] => value2 [key3] => value4 )

我也试过

$loadFile = file('file.txt');

$returnArray = array();

foreach ($loadFile as $line) {

  $startWith = substr(trim($line), 0, 2);

    if (empty($line) || $startWith == '//') {

          continue;

  }

  $exp = explode('=', $line);

  $returnArray[$exp[0]] = $exp[1];

}

return $returnArray;

这也给了我同样的结果。我还尝试了一个 array_merge，它只是将所有内容都推入一个以数值为键的数组中。

Answer 1

我认为您的问题是您覆盖了密钥的值。$returnArray[$key]&nbsp;=&nbsp;$value;所以你想要的是将你的值附加到一个以$key为父级的子数组。$returnArray[$key][]&nbsp;=&nbsp;$value;随着[]你追加$value到底层数组。

Answer 2

为了好玩，只需将它们转换为ini文件的数组语法并解析它：$result = parse_ini_string(str_replace('=', '[]=', file_get_contents('file.txt')));更有趣的是，把它们变成一个查询字符串并解析它：parse_str(str_replace('=', '[]=', implode('&', file('file.txt'))), $result);两者都产生：Array(&nbsp; &nbsp; [key1] => Array&nbsp; &nbsp; &nbsp; &nbsp; (&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [0] => value1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [1] => value2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [2] => value3&nbsp; &nbsp; &nbsp; &nbsp; )&nbsp; &nbsp; [key2] => Array&nbsp; &nbsp; &nbsp; &nbsp; (&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [0] => value1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [1] => value2&nbsp; &nbsp; &nbsp; &nbsp; )&nbsp; &nbsp; [key3] => Array&nbsp; &nbsp; &nbsp; &nbsp; (&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [0] => value1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [1] => value2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [2] => value3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [3] => value4&nbsp; &nbsp; &nbsp; &nbsp; ))

Answer 3

你应该将你的值附加到 $returnArray[$key] 的子数组中array_push($returnArray[$key],$value)&nbsp;;