Is PHP Relevant In 2021?

The focus has long since moved from PHP to JavaScript and Python. Nevertheless, new versions are coming out, and the performance tests indicate good progress. How relevant is PHP today? Under the cut - the thoughts of the developer, who continues to give preference to him.

A brief history of PHP

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— PHP 8.0.

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7.4 PHP :

class Person {
    public string $firstName;

    public string $lastName;

    public int $age;

    public ?string $job;
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

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• : $value = $array['key'] ?? 'default value';
  
  
  
  

  
  
  
  
  

• : return $cache['key'] ??= computeSomeValue('key');
  
  
  
  

  
  
  
  
  

• : $first = ['a', 'b']; $second = ['c', 'd']; $final= […$first, …$second];
  
  
  
  

  
  
  
  
  

• : array_fill(start_index: 0, num: 100, value: 50);
  
  
  
  

  
  
  
  
  

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Constructor promotion

Person



:

class Person {
    private string $firstName;

    private string $lastName; 

    protected int $age;

    public ?string $job;

    public function __construct(
        string $firstName,
        string $lastName,
        int $age,
        ?string $job
    ){
        $this->firstName = $firstName;
        $this->lastName = $lastName;
        $this->age = $age;
        $this->job = $job;
    }
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

PHP 8 :

class Person {
    public function __construct(
        private string $firstName,
        private string $lastName,
        protected int $age,
        public ?string $job
    ){}
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

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Nullsafe-

JavaScript, PHP . , PHP:

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if (is_null($repository)) {
    $result = null;
} else {
    $user = $repository->getUser(5);
    if (is_null($user)) {
        $result = null;
    } else {
        $result = $user->name;
    }
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

PHP null. nullsafe- :

$result = $repository?->getUser(5)?->name;

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function doSomething(int|string $value): bool|array {}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

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Kinsta WordPress. WordPress 5.3.

:

• WordPress 5.3 PHP 5.6: 97,71 /

  
  
  
  
  

• WordPress 5.3 PHP 7.0: 256,81 /

  
  
  
  
  

• WordPress 5.3 PHP 7.1: 256,99 /

  
  
  
  
  

• WordPress 5.3 PHP 7.2: 273,07 /

  
  
  
  
  

• WordPress 5.3 PHP 7.3: 305,59 /

  
  
  
  
  

• WordPress 5.3 PHP 7.4: 313,42 /

  
  
  
  
  

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