Question

考虑像这样的txt文件

@[111:a]@[222:a]@[333:a]
@[444:a]@[555:a]@[666:a]
@[777:a]@[888:a]@[999:a]

我想以这样的方式加扰它：@ [和：a]之间的值随机重新排序，如下例所示：

@[777:a]@[555:a]@[999:a]
@[444:a]@[222:a]@[888:a]
@[111:a]@[666:a]@[333:a]

Answer 1

$file = <<<EOF
@[111:a]@[222:a]@[333:a]
@[444:a]@[555:a]@[666:a]
@[777:a]@[888:a]@[999:a]
EOF;

preg_match_all('/@\[[^\]]+\]/', $file, $matches);
shuffle($matches[0]);
echo join(PHP_EOL, array_map('join', array_chunk($matches[0], 3)));

它基本上只是将所有项目解析为一个数组，对数组进行混洗，然后每行再输出三个。

Answer 2

<?php

$content = '';
preg_match_all("/@\[[0-9]+\:a\]/", file_get_contents("file.txt"), $matches);
$matches = $matches[0];

shuffle($matches); //shuffle array's order

foreach($matches as $match) {
     $content .= $match;
}

file_put_contents("file.txt", $content);
?>

请注意，您可能会收到权限错误。

Answer 3

您可以使用]在explode()上拆分整个内容，但需要将]追加到每个元素上。将数组洗牌然后再次输出。

$string = file_get_contents('file.txt');

// Split into an array on the right bracket, and strip out line breaks.
$array = explode("]", str_replace("\n", "", $string));

// Shuffle it
shuffle($array);

$output = "";

// Iterate over the array assembling it back into a string
$len = count($array);
for ($i = 0; $i < $len; $i++) {
  // Don't forget to add the right bracket back on
  $output .= $array[$i] . "]";
  // Linebreak every 3rd element.
  if ($i % 3 == 0) $output .= "\n";
}

// Write out to file
file_put_contents("output.txt", $output);

Answer 4

如何分解并随机化订单？

$contents = file_get_contents('thefile.txt'); //read file contents
$parts = explode('@', $contents); //split it into an array by its @ character
shuffle($parts); //shuffle the array
$result = ""; //create a base string
$i = 0; //counter
foreach($parts as $part)
{
   $part = trim($part); //Remove any spaces before or after string part.
   $result .= '@'.$part; //add it to the result with the @ again.
   $i++;
   if($i % 3 >= 3) //If we are over a 3rd one we insert a new line
         $result .="\r\n";
}
file_put_contents('destination.txt', $result); //Save the file

Answer 5

$input = '@[111:a]@[222:a]@[333:a]
@[444:a]@[555:a]@[666:a]
@[777:a]@[888:a]@[999:a]';

// parse input
preg_match_all('/@\[[0-9]+:a]/', $input, $matches);
$matches = $matches[0];

// randomise
shuffle($matches);

// create output
$output = '';
$columns = 0;
foreach ($matches as $match) {
  $output .= $match;

  $columns++;
  if ($columns == 3) {
    $output .= "\n";
    $columns = 0;
  }
}

// print output as html
print nl2br($output);

PHP加密txt文件，同时保持一些部分相同

5 个答案: