how can i make my delete function work in php

my code was working but i don’t know how to create a delete function i tried my best to search some but it doesn’t fit in this code im still learning the basics and i will really appreciate the help, thank you very much in advance

<?php
    $straw = [];
    $index = 0;
    class Fruit {
      private $name;
      private $color;
    
      public function describe($name, $color) {
        $this->name = $name;
        $this->color = $color;
      }
    
      public function intro() {
         echo "{$this->name}"."\n";
        echo "{$this->color}"."\n";
      }
    }
    
    // Strawberry is inherited from Fruit
    class Strawberry extends Fruit {
      
      public function getfruit() {
        echo $this->intro();
       }
       public function assignfruit($name, $color){
      $this->describe($name, $color);
      }
      public function deletePatient($index){
            unset($this->intro[$index]);
        }
    }
    $strawberry1 = new Strawberry();
    $strawberry1->assignfruit("Strawberry", "red");
    $straw[$index]= $strawberry1;
    $index++;
    $strawberry2 = new Strawberry();
    $strawberry2->assignfruit("Strawberry", "red");
    $straw[$index]= $strawberry2;
    $index++;
    $strawberry2->deletePatient(1);
    
    foreach ($straw as $star){
      echo $star->getfruit();
      
    }

>Solution :

Seems like you want to delete a fruit?

You store the fruits in an array called $straw. So if you want to delete one, you need to delete it from that array.

Try this:

unset($straw[0]);
foreach ($straw as $star) {
    echo $star->getfruit();
      
}

That should delete the first entry into the array, and therefore your first fruit.