[Basic grammar] Differences between Ruby / Python / PHP

Introduction

A summary of personal learning! I learned the basic grammar of 3 languages, so I summarized it!

1. Output

Ruby

   puts "Hello, world"

Python

   print("Hello, world")

PHP

   echo "Hello, world";

2. Variables

Ruby

   variable = "variable"

Python

   variable = "variable"

PHP

  $variable = "variable";

3. Output of property value

Ruby

   # attr_accessor :Define getters by name etc.
   puts person.name

Python

   # def __init__Define getters with etc.
   print(person.name)

PHP

  echo $person->name();

4. If statement

Ruby

   if number % 15 == 0
     puts "FizzBuzz" 
   elsif number % 3 == 0
     puts "Fizz"
   elsif number % 5 == 0
     puts "Buzz"
   else 
     puts number
   end  

Python

   if number % 15 == 0:
     print("FizzBuzz") 
   elif number % 3 == 0:
     print("Fizz")
   elif number % 5 == 0:
     print("Buzz")
   else:
     print(number)  

PHP

  if (number % 15 == 0){
     echo "FizzBuzz";
   } elseif (number % 3 == 0){
     echo "Fizz";
   } elseif (number % 5 == 0){
     echo "Buzz";
   } else {
     echo $number;
   }

5. Array / hash edition

Ruby

   #Array
   array = ["Red", "Blue", "yellow"]
   #hash
   hash = {"Osaka": "Osaka", "Aichi prefecture": "Nagoya", "Tokyo": "Tokyo?"}

Python

   #list
   lists = ["Red", "Blue", "yellow"]
   #dictionary
   dict = {"Osaka": "Osaka", "Aichi prefecture": "Nagoya", "Tokyo": "Tokyo?"}

PHP

    //Array
   $array = ["Red", "Blue", "yellow"];
   //Associative array
   $associative_array = [
           "Osaka" => "Osaka",
           "Aichi prefecture" => "Nagoya",
           "Tokyo" => "Tokyo?"
   ];

6. Repeat syntax

6-1. Loop processing

Ruby

   i = 1
   while i <= 100 do
     #processing
     i += 1
   end

Python

   i = 1
   while i <= 100:
    #processing
    i += 1

   for i in range(1, 101):
    #processing

PHP

  for ($i = 1;$i <= 100;$i++){
  //processing
  }

6-2. Iterative processing (?)

Ruby

   array.each do |value|
     #processing
   end

   hash.each {|key, value|
    #processing
   }

Python

  for value in lists:
    #processing

  for key in dict:
     #processing

PHP

  foreach($array as $value){
    //processing
  }

  foreach($associativeArray as $key => $value){
    //processing
  }

7. Function definition

Ruby

  def hello
   #processing
  end   

Python

   def hello():
     #processing
     return #Return value

PHP

  function hello() {
    //processing
    return //Return value
  }

8. Classes and instances

Ruby

   class Person
     @@number = 0

     def self.classmethod
      #processing
     end
     
     def initialize(name)
        @name = name
     end

     person = Person.new("Yamada")
   end   

Python

　　class Person:
     number = 0

     @classmethod
     def classmethod(cls):
       #processing

     def __init__(self, name):
       self.name = name
     end
     
     person = Person("Yamada")
   end   

PHP

  class Person {
    private static $number;
    private $name;
 
    public function static function classmethod(){
      echo self::$number;
    }

    public function __construct($name){
      $this->name = $name;
    }
    $person = new Person();
  }

9. Getters and setters

Ruby

   def setName(name)
     @name = name
   end
 
   def getName
    @name
   end
   #Or
   attr_accessor :name

Python

   def __init__(self, name):
        self._name = name

    @property
    def name(self):
        return self.__name

    @name.setter
    def name(self, name):
        self.__name = name

PHP

  public function setName($name) {
    $this->name = $name;
  }

  public function getName() {
    return $this->name;
  }

10. Finally

It feels like there is a personality in how (end / indent / {}) one block is specified! Thank you for reading! : relaxed: