PHP和Vue.js开发安全性最佳实践：防止恶意脚本注入攻击方法

$username = $_POST['username'];
$username = filter_var($username, FILTER_SANITIZE_STRING);
// 经过过滤的$username可以安全使用了

export default {
  data() {
    return {
      username: '',
    };
  },
  computed: {
    validatedUsername() {
      if (!this.username) return '';
      const regex = /^[a-zA-Z0-9]+$/;
      if (!regex.test(this.username)) {
        // 输入不合法，给出提示
        return '用户名只能含有字母和数字';
      }
      return this.username;
    },
  },
};

$username = $_POST['username'];
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");
$stmt->bindParam(':username', $username);
$stmt->execute();
// 处理查询结果

$username = $_POST['username'];
$username = htmlspecialchars($username, ENT_QUOTES, 'UTF-8');
// 经过转义的$username可以安全使用了

<template>
  <div v-html="content"></div>
</template>
<script>
export default {
  data() {
    return {
      content: '',
    };
  },
  methods: {
    setContent(html) {
      this.content = html;
    },
  },
};
</script>