将文本拆分为多维数组php

时间：2016-09-18 01:45:39

标签： php

我很难做到这一点。所以我有一个带有以下文字的文件

The Boys in the Boat    Daniel James Brown  067002581X  19.99   5   16.99   9   16.99
Harry Potter and the Cursed Child   J. K. Rowling, Jack Thorne, John Tiffany    1338099133  18.95   25  17.98       0   17.98
Just Mercy  Bryan Stevenson 0812994520  17.50   8   16.25   10  16.25
Me Before You   Jojo Moyes  0670026603  18.95   2   17.50   1   17.25
A Thousand Splendid Suns    Khaled Hosseini 1594489505  19.00   7   15.50   4   14.95
The Wright Brothers David McCullough    1476728742  21.95   3   18.95   3   18.95

我需要以某种方式使用函数将其读入2维关联数组。 我从头开始创建数组没有问题，我已经完成了......数组应该看起来像

$books = array( 
        "The Boys in the Boat" => array (
           "author" => 'Daniel James Brown',
           "isbn" => '067002581X',  
           "hardcover" => 19.99,
            "quantity" => 5,
            "softcover" => 5.99,
            "e-book" => 6.99,
        ),
"Jungle" => array (
           "author" => 'Upton Sinclair',
           "isbn" => '067002581',   
           "hardcover" => 19.99,
            "quantity" => 5,
            "softcover" => 5.99,
            "e-book" => 6.99,
        ),



     );

我不知道如何创建一个逐行浏览文件文本的函数并创建一个二维数组...我知道我必须使用explode但我不知道要使用什么分隔符，因为如果我使用了空间它不起作用，文件中没有其他的分隔符。请帮助我整天花在这上面...

3 个答案:

答案 0 :(得分：0)

因为所有这些都是2个或更多空格：

//create books array
$books = array();

//$text to array by each line
$arr = explode("\n",$text);

//explode and store each line
foreach ($arr as $line){
$arr2 = explode('  ',$line);
$books[] = array (
                  'name'=>trim($arr2[0]),
                  'author'=>trim($arr2[1]),
                  'isbn'=>trim($arr2[2]),
                  'hardcover'=>trim($arr2[3]),
                  'quantity'=>trim($arr2[4]),
                  'softcover'=>trim($arr2[5]),
                  'e_book'=>trim($arr2[6])
                 );
}

//the array that you want
print_r($books);

PHP允许它，但我没有在数组键中使用name，因为它有空格。如果你坚持，你可以改变这一行

$books[] = array (

到

$books[$arr2[0]] = array (

答案 1 :(得分：0)

考虑每一行是一个子数组，每个书名都是一个索引，你可以使用preg_match分割2个或更多空格，返回数组的第一项是书名（索引），另一个是值在子阵列中。也就是说，你可以这样写：

<?php
$book_info_keys = array('author', 'isbn', 'hardcover', 'quantity', 'softcover', 'e-book');
$input_file = 'a.txt';

$result = array();
foreach (file($input_file) as $line) { // Read the file as an array
  // On each line, split items by 2 or more spaces
  $a = preg_split('/ {2,}/', $line);

  // Now we divide the line into two part: the first item is book name,
  // the rest is book info.
  $book_name = $a[0];
  $book_info = array();

  $i = 1; // $a[0] is book name, so the first info is at index 1
  foreach ($book_info_keys as $key) {
    $book_info[$key] = $a[$i++];
  }
  // Now insert the infos into the result array, with book name served as index
  $result[$book_name] = $book_info;
}

var_dump($result);
?>

并且，请记住，上面的代码不是为了在现实生活中使用而编写的。 在任何地方添加错误检查，永远不要假设输入文件始终有效（正如我在上面的代码中假设的那样）。也许在某些线路上有8个，9个或更多的项目，而在其他线路上只有6个，5个或更少的项目。在这些情况下，上面的代码会出现故障。

答案 2 :(得分：0)

这就是我想出来的。

请注意代码中的注释，并注意我发布的示例文件在此处发布时已更改（标签到空格）。

如果你有一定数量的空格作为分隔符，这会变得更加困难，因为我们在一个字段内可能有相同的空格集（例如，书名）。这可能会使脚本无法按预期运行。您可以将"\t"更改为" "（四个空格），如果这是您所拥有的，则需要测试要知道的文件/字符串。

标签很好，但您也无法在任何文本字段中添加标签，否则会失败。

由于此处的空格正在更改标签，因此我在下面的代码中将它们硬编码为\t。

<?php
# This is basically just exploding the elements 2 times
# and getting the elements in the right order

# This will hold the array with info
$finalResult = array();

# Your input text to be parsed
# I am supposing you have TABS as delimiters and the order never changes
$inputText = <<<EOF
The Boys in the Boat\tDaniel James Brown\t067002581X\t19.99\t5\t16.99\t9\t16.99
Harry Potter and the Cursed Child\tJ. K. Rowling, Jack Thorne, John Tiffany\t1338099133\t18.95\t25\t17.98\t0\t17.98
Just Mercy\tBryan Stevenson\t0812994520\t17.50\t8\t16.25\t10\t16.25
Me Before You\tJojo Moyes\t0670026603\t18.95\t2\t17.50\t1\t17.25
A Thousand Splendid Suns\tKhaled Hosseini\t1594489505\t19.00\t7\t15.50\t4\t14.95
The Wright Brothers\tDavid McCullough\t1476728742\t21.95\t3\t18.95\t3\t18.95
EOF;

# First break each line into array of lines
# If you are sure this file comes from *nix you can use \n as newline
# If you are sure this comes from Windows you can use \r\n
# Or you can use PHP_EOL but this use the current system as a basis for what to use
$textLines = explode("\n", $inputText);

# Now we go through each line getting all data
foreach($textLines as $line) {
    # Get each tab-separated field
    $expLine  = explode("\t", $line);
    # Sanity check
    if (count($expLine) < 8) {
        # The line does not have enough items, deal with error
        echo "Item " . (isset($expLine[0]) ? $expLine[0]." " : "") . "ignored because of errors\n";
        continue;
    }
    # new item
    # I have changed this a bit as it seems you have more fields to get than
    # what shows on your example (2 quantities, for hard and softcovers)
    $finalResult[$expLine[0]] = array(
        "author"      => $expLine[1],
        "isbn"        => $expLine[2],  
        "hardcover"   => $expLine[3],
        "hc-quantity" => $expLine[4],
        "softcover"   => $expLine[5],
        "sc-quantity" => $expLine[6],
        "e-book"      => $expLine[7],
    );
}

# Just show the data structure
var_dump($finalResult);

?>

然后结果：

array(6) {
  ["The Boys in the Boat"]=>
  array(7) {
    ["author"]=>
    string(18) "Daniel James Brown"
    ["isbn"]=>
    string(10) "067002581X"
    ["hardcover"]=>
    string(5) "19.99"
    ["hc-quantity"]=>
    string(1) "5"
    ["softcover"]=>
    string(5) "16.99"
    ["sc-quantity"]=>
    string(1) "9"
    ["e-book"]=>
    string(5) "16.99"
  }
  ["Harry Potter and the Cursed Child"]=>
  array(7) {
    ["author"]=>
    string(40) "J. K. Rowling, Jack Thorne, John Tiffany"
    ["isbn"]=>
    string(10) "1338099133"
    ["hardcover"]=>
    string(5) "18.95"
    ["hc-quantity"]=>
    string(2) "25"
    ["softcover"]=>
    string(5) "17.98"
    ["sc-quantity"]=>
    string(1) "0"
    ["e-book"]=>
    string(5) "17.98"
  }
  ["Just Mercy"]=>
  array(7) {
    ["author"]=>
    string(15) "Bryan Stevenson"
    ["isbn"]=>
    string(10) "0812994520"
    ["hardcover"]=>
    string(5) "17.50"
    ["hc-quantity"]=>
    string(1) "8"
    ["softcover"]=>
    string(5) "16.25"
    ["sc-quantity"]=>
    string(2) "10"
    ["e-book"]=>
    string(5) "16.25"
  }
  ["Me Before You"]=>
  array(7) {
    ["author"]=>
    string(10) "Jojo Moyes"
    ["isbn"]=>
    string(10) "0670026603"
    ["hardcover"]=>
    string(5) "18.95"
    ["hc-quantity"]=>
    string(1) "2"
    ["softcover"]=>
    string(5) "17.50"
    ["sc-quantity"]=>
    string(1) "1"
    ["e-book"]=>
    string(5) "17.25"
  }
  ["A Thousand Splendid Suns"]=>
  array(7) {
    ["author"]=>
    string(15) "Khaled Hosseini"
    ["isbn"]=>
    string(10) "1594489505"
    ["hardcover"]=>
    string(5) "19.00"
    ["hc-quantity"]=>
    string(1) "7"
    ["softcover"]=>
    string(5) "15.50"
    ["sc-quantity"]=>
    string(1) "4"
    ["e-book"]=>
    string(5) "14.95"
  }
  ["The Wright Brothers"]=>
  array(7) {
    ["author"]=>
    string(16) "David McCullough"
    ["isbn"]=>
    string(10) "1476728742"
    ["hardcover"]=>
    string(5) "21.95"
    ["hc-quantity"]=>
    string(1) "3"
    ["softcover"]=>
    string(5) "18.95"
    ["sc-quantity"]=>
    string(1) "3"
    ["e-book"]=>
    string(5) "18.95"
  }
}
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