Question

所以，我正在为我的网页创建一个调查，我正在使用一个文本文件来存储结果：

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28

我必须使用PHP从文本文件中提取结果并将其显示给用户。该调查仅包括单选按钮（用户可以选择的选项）。每个数字代表该单选按钮的结果。无论如何，我的问题是阅读文本文件。当它只是一个数字（12345678 ...）时，我可以使它工作，但如果需要，它不会将它们显示为两位数。问题是如何让php不包含“|”如果需要，还会将数字显示为两位数？我是php的新手。

此外，如果新用户提交表单，我最终将阅读该文件以更新结果，但是现在我只是想让它显示正确。这是我的代码：

<?php
    session_start();

    if ($_SERVER["REQUEST_METHOD"] == "POST") {
        setcookie("Submit", "yes");
    }
    // the file that will store the data
    $fileName = "data/results.txt";

    $republican = 0;
    $democratic = 0;
    $libertarian = 0;
    $right = 0;
    $wrong = 0;
    $undecided = 0;
    $trump = 0;
    $hilary = 0;
    $mucmullin = 0;
    $otherVote = 0;
    $wontVote = 0;
    $debateYes = 0;
    $debateNo = 0;
    $changeYes = 0;
    $changeNo = 0;
    $age1829 = 0;
    $age3044 = 0;
    $age4559 = 0;
    $age60 = 0;
    $cauc = 0;
    $afAm = 0;
    $his = 0;
    $natAm = 0;
    $other = 0;
    $male = 0;
    $female = 0;

    //$results = fopen($fileName, "a+") or die("Unable to save results of your survey.");

    //Check to see if we got here from POST
    if ($_SERVER["REQUEST_METHOD"] == "POST")
    {
        //open file
        //save file content as an int variable, or could save it as an array
        // close file

        // check all radio buttons and see if the it was selected,
        // if so then ++ the variable we got from text file.

        // save data to the text file

        //display results
        $formPost = TRUE;
    } else { /* This will only excute if the user did not submit the form */

        // delcare array that will store the contents of the text file
        $results = array();

        // open file and read it into the array
        $results = readTextFile($fileName);

    }

 /*********************************************
  * READ TEXT FILE FUNCTION
  * This section will get data from from the file.
  * It will simply read it, and won't be able to edit
  * the file at all. It will store the contents,
    * of the file into an array, and then close the
    * file.
  *********************************************/
    function readTextFile($fileName) {
        // declaring local array
        $results = array();

        // open file
        $file = fopen($fileName, "r");

        // read the file
        while (!feof($file)) {
             $results[] = fgetc($file);
        }

        // I wasn't born in a barn
        fclose($file);

        // make like a leaf
        return $results;
    }
?>

Answer 1

阅读整个文件，然后使用explode函数按如下方式将结果字符串拆分为|个字符。

$results = file_get_contents($fileName);
$results = explode("|", $results);

数组$results将包含原始字符串中由|分隔的所有数字（作为字符串）。

如果那时你需要找出数组是否包含数字 - 例如是否选择了单选按钮1 - 您可以创建第二个数组，如下所示：

$results2 = [];
foreach ($results as $num) {
    $results2[$num] = true;
}

然后，您应该能够检查$results2[1]，如果选择了单选按钮1，它将是true。

使用PHP形成文本文件读取两位数

1 个答案: