PHP 阅读文件后取消链接

Question

我读取文件夹中的文件。

现在我想让每个文件都有一个 "edit"、"start" 和 "delete" 按钮。

问题是当我点击"delete"时，PHP会删除最后读取的文件，而不是我点击"delete"

的文件

我知道这是 While 循环，它不会为取消链接函数提供任何信息，但我没弄对。

感谢帮助！ :)

<?php 
if ($handle = opendir('rezepte/')) {
    while (false !== ($entry = readdir($handle))) {
        if ($entry != "." && $entry != "..") {
            #Entfernt der Datei das ".txt"
            $replacer = str_replace(".txt","",$entry);
            echo "
                <div class='eintrag'>$replacer</div><br>
                <a href='$replacer.txt'>edit</a>
                <a href='$replacer'> start</a>

                <form method='post'>
                    <input type='submit' name='delete' value='delete'/>
                </form>";       
        }       
    }
    closedir($handle);
}   

if(isset($_POST['delete'])) {
    echo "
        <div class='warning'>";
    echo $replacer;
    echo "Do you really want to delete?>
        <form method='post'>
            <input type='submit' name='really_delete' value='delete it'/>
        </form>

        <form method='post'>
            <input type='submit' name='not_delete' value='cancel'/>
        </form></div>";
}   

if(isset($_POST['really_delete'])) {
    unlink("rezepte/".$replacer.".txt");
}

if(isset($_POST['not_delete'])) {
}

?>

Answer 1

忽略上面代码中的一些语法错误，您可以将文件名 ($replacer) 放入删除提交按钮的值中，如下所示：

<input type='submit' name='delete' value='" . $replacer . "'/>

这会将 $replacer 的值发送到您似乎需要它的地方。

不过，理想情况下，像这样放置一个带有名称的隐藏表单字段会更有意义：

'<input type="hidden" name="filename" value="' . $replacer . '"/>'

并更改您的表单处理器以查找 $_POST['filename']。

Answer 2

嗯，根据你的编码风格，你必须编写如下代码：

<?php 

if(isset($_POST['delete'])) {
    $replacer = $_POST['delete'];
    echo "
        <div class='warning'>";
    echo $replacer;
    echo "Do you really want to delete?>
        <form method='post'>
            <input type='submit' name='really_delete' value='$replacer'/>
        </form>

        <form method='post'>
            <input type='submit' name='not_delete' value='cancel'/>
        </form></div>";
}   

if(isset($_POST['really_delete'])) {
    $replacer = $_POST['really_delete'];
    unlink("rezepte/".$replacer.".txt");
}

if(isset($_POST['not_delete'])) {
}

if ($handle = opendir('rezepte/')) {
    while (false !== ($entry = readdir($handle))) {
        if ($entry != "." && $entry != "..") {
            #Entfernt der Datei das ".txt"
            $replacer = str_replace(".txt","",$entry);
            echo "
                <div class='eintrag'>$replacer</div><br>
                <a href='$replacer.txt'>edit</a>
                <a href='$replacer'> start</a>

                <form method='post'>
                    <input type='submit' name='delete' value='$replacer'/>
                </form>";       
        }       
    }
    closedir($handle);
}

PHP 阅读文件后取消链接

PHP unlink files after read them

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