在 php 面试中,考官会考察你对编程基础和语言特性的掌握程度。以下是一些常见的必考问题,旨在全面考察你的 PHP 技能。
php
php
name = $name;$this->age = $age;}public function get_info() {return "Name: {$this->name}, Age: {$this->age}";}
}// 继承
class Student extends Person {public $grade;public function __construct($name, $age, $grade) {parent::__construct($name, $age);$this->grade = $grade;}public function get_info() {return parent::get_info() . ", Grade: {$this->grade}";}
}// 多态
$person = new Person('John Doe', 30);
$student = new Student('Jane Doe', 20, 'A');echo $person->get_info() . '
'; // 输出: Name: John Doe, Age: 30
echo $student->get_info() . '
'; // 输出: Name: Jane Doe, Age: 20, Grade: A
?>
php getMessage(); } ?>
php
php
query('SELECT FROM users');// 遍历查询结果
while ($row = $result->fetch_assoc()) {echo $row['name'] . '
';
}// 关闭数据库连接
$mysqli->close();
?>
php real_escape_string($_POST['username']);// 防范 XSS 攻击 $output = htmlspecialchars($_POST['comment']); ?>
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