PHP trait_exists() Function

 <?php

// Created trait Programming
trait Programming
{
    // Declared static instance
    private static $instance;
    protected $temp;
 
   // Defining static function in trait to Reuse
    public static function Designing()
    {
        self::$instance = new static();
        // Magic constant __TRAIT__ in PHP
        // It gets the class name for the static method called.
        self::$instance->temp = get_called_class().' '.__TRAIT__;
       
        return self::$instance;
    }

}
// Checking if 'Programming' Trait exists
if ( trait_exists( 'Programming' ) ) 
{
   
    class Initializing 
    {
        // Reusing trait 'Programming'
        use Programming;

        public function text( $strParam )
        {
            return $this->temp.$strParam;
        }
    }

}

echo Initializing::Designing()->text('!!!');

?>

<?php 

// Creating Base class
class Base 
{
    public function callBase()
     {
        echo 'This is base function!'."<br>";
     }
}

// Creating Trait
trait myTrait {
    public function callBase() 
    {
        parent::callBase();
         echo 'This is trait function!'."<br>";
    }
}

// Using myTrait
class myClass extends Base 
{
    use myTrait;
}

$myObject = new myClass();
$myObject->callBase();

// Checking if trait exists
if(trait_exists( "myTrait"))
{
    echo "\n myTrait exists! \n";
}
else
{
  echo "\n myTrait does not exists! \n";
    
}

?>