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Streaming a large file using PHP（5个答案）
28天前关闭。
我构建PHP动态下载使用此代码

<?php
include '../wp-config.php';
global $wpdb;

$allowed=false;
$user_login=wp_get_current_user();
$usersn=explode(".",str_replace("http://","",$user_login->user_url));
$usermesin=$usersn[0];

if(strtoupper(trim($usermesin))=='ALLN' || strtoupper(trim($usermesin))=='TES'){
    $allowed=true;
}

// Define the directory where your files are stored
$fileDirectory = 'downloads/';

// Get the file name from a query parameter (e.g., ?file=example.txt)
$fileName = isset($_GET['file']) ? $_GET['file'] : '';

// Check if the file exists in the directory
if (!empty($fileName) && file_exists($fileDirectory . $fileName)) {
    $filePath = $fileDirectory . $fileName;
    
    // Set the appropriate headers for the download
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename="' . (($allowed)? basename($filePath) :'permission-denied.txt') . '"');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($filePath));
    
    // Output the file for download

    if($allowed){
        readfile($filePath);
    }else
    {
        echo"You don't have permission to download this file";
    }
    exit;
    // echo 'dapat file '.(($allowed)?'software' :'permission-denied.txt');
} else {
    // Handle file not found, e.g., display an error message
    echo 'File not found.';
}
?>

字符串
但这场演出
致命错误：/home/public_html/wp-includes/functions.php第5349行无法找到请求的URL所对应的网页
而不是downlod文件，当我运行这段代码在本地它的工作预期，因为我改变了内存限制，如何正确的方式来读取文件？