PHP怎么实现文件自动压缩 文件自动压缩功能实现教程

<?php

/**
 * 自动压缩文件或目录到ZIP文件
 *
 * @param string $sourcePath 要压缩的文件或目录路径
 * @param string $zipFilePath 压缩后的ZIP文件路径
 * @return bool 成功返回true，失败返回false
 */
function zipFiles($sourcePath, $zipFilePath) {
    $zip = new ZipArchive();

    if ($zip->open($zipFilePath, ZipArchive::CREATE) !== TRUE) {
        return false; // 打开ZIP文件失败
    }

    $sourcePath = rtrim($sourcePath, '/'); // 移除路径末尾的斜杠

    if (is_dir($sourcePath)) {
        // 如果是目录，则递归添加文件
        $files = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator($sourcePath),
            RecursiveIteratorIterator::LEAVES_ONLY
        );

        foreach ($files as $name => $file) {
            // 忽略点文件和目录
            if ($file->isDir()) continue;

            $filePath = $file->getRealPath();
            $relativePath = substr($filePath, strlen($sourcePath) + 1);

            $zip->addFile($filePath, $relativePath);
        }
    } else if (is_file($sourcePath)) {
        // 如果是单个文件，则直接添加
        $zip->addFile($sourcePath, basename($sourcePath));
    } else {
        return false; // 源路径既不是文件也不是目录
    }

    $zip->close();

    return file_exists($zipFilePath); // 检查ZIP文件是否成功创建
}

// 示例用法
$source = '/path/to/your/file_or_directory';
$destination = '/path/to/your/archive.zip';

if (zipFiles($source, $destination)) {
    echo "文件压缩成功！";
} else {
    echo "文件压缩失败。";
}

?>

<?php

function zipLargeFile($sourceFile, $zipFilePath) {
    $zip = new ZipArchive();
    if ($zip->open($zipFilePath, ZipArchive::CREATE) !== TRUE) {
        return false;
    }

    $handle = fopen($sourceFile, 'rb');
    if ($handle === false) {
        $zip->close();
        return false;
    }

    $zip->addEmptyDir('temp'); // 创建一个临时目录，用于存放文件内容
    $zip->addFromString('temp/' . basename($sourceFile), ''); // 添加一个空文件

    $chunkSize = 1024 * 1024; // 1MB的块大小
    $offset = 0;

    while (!feof($handle)) {
        $chunk = fread($handle, $chunkSize);
        if ($chunk === false) {
            fclose($handle);
            $zip->close();
            return false;
        }

        $zip->addFromString('temp/' . basename($sourceFile), file_get_contents('zip://' . realpath($zipFilePath) . '#temp/' . basename($sourceFile)) . $chunk);
        $offset += strlen($chunk);
    }

    fclose($handle);
    $zip->deleteName('temp/' . basename($sourceFile));
    $zip->renameName('temp', basename($sourceFile));
    $zip->close();

    return file_exists($zipFilePath);
}

// 示例用法
$source = '/path/to/your/large_file.txt';
$destination = '/path/to/your/archive.zip';

if (zipLargeFile($source, $destination)) {
    echo "大文件压缩成功！";
} else {
    echo "大文件压缩失败。";
}

?>

<?php

function gzipFile($sourceFile, $destinationFile) {
    $content = file_get_contents($sourceFile);
    if ($content === false) {
        return false;
    }

    $compressed = gzencode($content, 9); // 9是最佳压缩级别
    if ($compressed === false) {
        return false;
    }

    if (file_put_contents($destinationFile, $compressed) === false) {
        return false;
    }

    return file_exists($destinationFile);
}

// 示例用法
$source = '/path/to/your/file.txt';
$destination = '/path/to/your/file.txt.gz';

if (gzipFile($source, $destination)) {
    echo "文件gzip压缩成功！";
} else {
    echo "文件gzip压缩失败。";
}

?>

<?php

function gzipFileShell($sourceFile, $destinationFile) {
    $command = "gzip -c " . escapeshellarg($sourceFile) . " > " . escapeshellarg($destinationFile);
    $output = shell_exec($command);

    return file_exists($destinationFile);
}

// 示例用法
$source = '/path/to/your/file.txt';
$destination = '/path/to/your/file.txt.gz';

if (gzipFileShell($source, $destination)) {
    echo "文件gzip压缩成功！";
} else {
    echo "文件gzip压缩失败。";
}

?>

crontab -e

0 0 * * * /usr/bin/php /path/to/your/compress.php