网站root不是php安装root

Question

This is section of code that I have put in /pgen/admin

<h1><b>List of saved text files:</b></h1>
<?php
$directory = "/pgen/saves/";
$phpfiles = glob($directory . "*.html");
$id = 1;

foreach ($phpfiles as $phpfile) {
    $date = " last modified/date created: " . date ("F d Y H:i:s.", filemtime($phpfile));
    echo $id.". <a href=$phpfile>".basename($phpfile)."</a>" .$date."<br>";
    $id ++;
}
?>

The $directory variable is supposed to be the root of the webpage plus /pgen/saves/. I have tried using $_SERVER["DOCUMENT_ROOT"]."/pgen/saves". Also, if I browse using a ftp client, it shows this page is located at /public_html/pgen/admin/ because I am using a 3rd party hosting service. The code is supposed to list the files in the /pgen/saves folder but the code itself is in the /pgen/admin folder. I've searched everywhere and since I'm new at php, I don't know what to do.

Answer 1

You would be better off to add some error checking/validation to your efforts. When using a foreach() method on an array, you must be aware that it is trusting you to pass it a legit array. If the value passed is not an array, it will try to use it and fail.

$directory = "/pgen/saves/";
$phpfiles = glob($directory . "*.html");
$id = 1;

// Error if no files are found
if (!is_array($phpfiles) && count($phpfiles) <= 0) {
    die('no files found');
}

// Otherwise, continue on
foreach ($phpfiles as $phpfile) {
    $date = " last modified/date created: " . date ("F d Y H:i:s.", filemtime($phpfile));
    echo $id.". <a href=$phpfile>".basename($phpfile)."</a>" .$date."<br>";
    $id ++;
}