php 获取文件大小

<?php
$file_path = 'path/to/your/file.txt';

if (file_exists($file_path)) {
    $size = filesize($file_path);
    echo "文件大小为: " . $size . " 字节";
} else {
    echo "文件不存在";
}
?>

if (file_exists($file_path)) {
    $size = filesize($file_path);
    echo "文件大小为: " . $size . " 字节";
} else {
    echo "文件不存在";
}

<?php
function getDirectorySize($dir) {
    $size = 0;
    if ($dh = opendir($dir)) {
        while (($file = readdir($dh)) !== false) {
            if ($file != "." && $file != "..") {
                $path = $dir . "/" . $file;
                if (is_dir($path)) {
                    $size += getDirectorySize($path);
                } else {
                    if (file_exists($path)) {
                        $size += filesize($path);
                    }
                }
            }
        }
        closedir($dh);
    }
    return $size;
}

$dir_path = 'path/to/your/directory';
echo "目录大小为: " . getDirectorySize($dir_path) . " 字节";
?>