用一个列子来读解成员方法:大家可以自己动手写一写,加深理解。
这样一个需求; 希望人可以说话, 做算术题.......,这样就需要使用到成员方法:
1、添加speak 成员方法,输出 我是小明
2、添加jisuan 成员方法,可以计算从 1+..+1000的结果
3、修改jisuan 成员方法,该方法可以接收一个数n,计算 1+..+n 的结果
4、添加add 成员方法,可以计算两个数的和
参考代码:
class Person{
public $name;
public $age;
//添加成员方法
public function speak(){
echo "我是小明";
}
public function jisuan(){
//计算从 1+..+1000的结果
$result =0;
for($i=1;$i $result+=$i;
}
//把计算结果ruturn 返回
return $result;
}
public function jisuan2($n){
//计算从 1+..+n的结果
$result=0;
for($i=1;$i $result+=$i;
}
//return
return $result;
}
//计算2个数的和
public function add($num1,$num2){
return $num1+$num2;
}
}
$person1=new Person;
//人说话
$person1->speak().'
';
//计算
echo '
'.$person1->jisuan();
//echo '
'.$person1->jisuan(100);
//带参数的
echo '计算的结果是:'.$person1->jisuan2(5);
//计算2个数的和
echo "
50+50=".$person1->add(50,51);
?>

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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