Question

I want create a helper class that containing method like cleanArray, split_char, split_word, etc.

The helper class it self will be used with many class. example :

Class A will user Helper, Class B, Class C, D, E also user Helper Class

what the best way to write and use helper class in PHP ?

what i know is basic knowledge of OOP that in every Class that use Helper class must create a helper object.

$helper = new Helper();

It that right or may be some one can give me best way to do that.

I also will create XXX Class that may use Class A, B, C, etc.

UPDATE : ->FIXED my fault in split_word method 😀

Based on Saul, Aram Kocharyan and alex answer, i modified my code, but its dont work, i dont know why.

<?php
class Helper {
    static function split_word($text) {
        $array =  mb_split("\s", preg_replace( "/[^\p{L}|\p{Zs}]/u", " ", $text ));
        return $this->clean_array($array);
    }
    static function split_char($text) {
        return preg_split('/(?<!^)(?!$)/u', mb_strtolower(preg_replace( "/[^\p{L}]/u", "", $text )));
    }
}
?>

and i use in other Class

<?php
include "Helper.php";
class LanguageDetection {
    public function detectLanguage($text) {
        $arrayOfChar = Helper::split_char($text);
        $words = Helper::split_word($text);
        return $arrayOfChar;
    }
}
$i = new Detection();
print_r($i->detectLanguage("ab  cd    UEEef   する ح      خهعغ فق  12  34   ٢ ٣  .,}{ + _"));
?>

Answer 1

As a rule of thumb, helpers should contain functionality that is common but has no special designation under the overall architecture of the application.

• Suffix the classname with Helper
• Use static methods whenever possible

In short:

// Helper sample
//
class ConversionHelper {

   static function helpThis() {
      // code
   }

   static function helpThat() {
      // code
   }
}

// Usage sample
//
class User {

   function createThings() {
      $received = ConversionHelper::helpThis();
   }
}