PHP和Vue.js开发安全性最佳实践：防止文件上传漏洞方法

$allowedExtensions = ['jpg', 'jpeg', 'png'];
$uploadedFile = $_FILES['file'];
$uploadedFileExtension = pathinfo($uploadedFile['name'], PATHINFO_EXTENSION);

if (!in_array($uploadedFileExtension, $allowedExtensions)) {
    // 非法的文件扩展名
    // 处理错误逻辑
}

$uploadedFile = $_FILES['file'];
$fileName = uniqid() . '.' . pathinfo($uploadedFile['name'], PATHINFO_EXTENSION);
$filePath = '/path/to/save/' . $fileName;

if (!move_uploaded_file($uploadedFile['tmp_name'], $filePath)) {
    // 保存文件失败
    // 处理错误逻辑
}

$maxFileSize = 2097152; // 2MB
$uploadedFile = $_FILES['file'];

if ($uploadedFile['size'] > $maxFileSize) {
    // 文件大小超过限制
    // 处理错误逻辑
}

$uploadDirectory = '/path/to/upload/directory';
$expirationTime = strtotime('-1 day'); // 过期时间为一天之前

foreach (glob($uploadDirectory . '/*') as $file) {
    if (filemtime($file) < $expirationTime) {
        unlink($file);
    }
}

<template>
    <input type="file" @change="checkFileType">
</template>

<script>
export default {
    methods: {
        checkFileType(event) {
            const file = event.target.files[0];
            const allowedExtensions = ['jpg', 'jpeg', 'png'];
            const fileExtension = file.name.split('.').pop();

            if (!allowedExtensions.includes(fileExtension.toLowerCase())) {
                alert('非法的文件类型');
                event.target.value = null;
            }
        }
    }
}
</script>