Question

问题：

我有一个包含13个xml文件的zip文件。除第一个文件外，每个文件都包含一个测验问题和几个答案。当我将文件上传到下面的脚本时，它会正确地打印出问题和答案，但不是按顺序。每次上传zip文件时，问题的顺序都会随机移动。

问题：

有没有办法可以利用文件名告诉脚本每次都按顺序打印问题？

Zip文件包含：

imsmanifest.xml
item101008.xml
item101009.xml
item101010.xml
item101011.xml
item101012.xml
item101013.xml
item101014.xml
item101015.xml
item101016.xml
item101017.xml
item101018.xml
item101019.xml

PHP脚本（警告，长脚本）：

<?php
    //Initialize counter
    $i = 0;

    //Go through each file
    while (($file = readdir($dh)) !== false) 
    {
        //Skipt the first loop
        if ($i > 1)
        {
            //Ignore misc file      
            if ($file != 'imsmanifest.xml')
            {
                //Create new DOM document
                $dom= new DOMDocument();

                //Load XML file
                $dom->load('uploads/' . $file);

                //Do not preserve white space
                $dom->preserveWhiteSpace = false;

                //Check if correct answers should be displayed
                if (isset($_POST['XMLAnswers']))
                {
                    //Get correct answer
                    $correct = $dom->getElementsByTagName( "correctResponse" )->item(0)->nodeValue;

                    //Get question
                    $questions = $dom->getElementsByTagName('p')->item(0)->nodeValue;

                    //Print out question
                    echo '<h4>' . htmlspecialchars($questions) . '</h4>' . "\n";

                    //Get answers
                    $domTable = $dom->getElementsByTagName("simpleChoice");

                    //Loop through each answer
                    foreach ($domTable as $answers)
                    {
                        //Delete potential unnecessary tags
                        $pattern = array(
                                            '<p xmlns="http://www.imsglobal.org/xsd/imsqti_v2p1">', 
                                            '</p>'
                                    );

                        //Check if answer is correct one
                        if ($correct == $answers->getAttribute('identifier'))
                        {
                            //Print out correct answer
                            echo '<span style="color:red;">' . utf8_decode(str_replace($pattern, '', innerHTML($answers))) . '</span><br />' . "\n";
                        }
                        else
                        {
                            //Print out answer
                            echo utf8_decode(str_replace($pattern, '', innerHTML($answers))) . '<br />' . "\n";
                        }
                    } 
                }
            }
        }
        //Increment counter
        $i++;
    }
?>

Answer 1

使用scandir而不是使用opendir / readdir。见http://www.php.net/manual/en/function.scandir.php。 scandir返回目录中已排序的文件数组。除了用readdir循环替换外部时，您应该能够放入此代码并让代码以最小的更改工作：

$files = scandir($dir);
foreach ($files as $file) {
   //your current code
}

在PHP中按顺序打印问题

1 个答案: