some excercises

Koterov-php-training/methods_of_classes/index.php

@@ -44,12 +44,12 @@ if (method_exists($point,'say')) {
 
 $greeting = new Greeting;
 
-$greeting->x = 5;
+// $greeting->x = 5;
 if (method_exists($greeting,'x')) {
 echo $greeting->x;
 }
 
-$point->z = 5;
+// $point->z = 5;
 
 echo '<pre>';
 print_r($point->listVariables());
@@ -63,4 +63,52 @@ echo "</br>";
 echo $rainbow->red;
 echo "</br>";
 echo $rainbow->unknown;
-echo "</br>";
+echo "</br>";
+
+// require_once ('object.php');
+
+// $objectConf = new Config;
+
+// $objectConf->title = 'Название сайта';
+// $objectConf->keywords = ['PHP', 'Phyton', 'Ruby', 'JavaScript' ];
+// $objectConf->per_page = 20;
+
+// echo '<pre>';
+// print_r( $objectConf );
+// echo '</pre>';
+
+require_once ('settings.php');
+
+$settings = new Settings;
+
+$settings->title = 'Название сайта';
+$settings->keywords = ['PHP', 'Phyton', 'Ruby', 'JavaScript' ];
+$settings->per_page = 20;
+
+echo '<pre>';
+print_r( $settings );
+echo '</pre>';
+
+require_once ('static_greeting.php');
+
+echo StaticGreeting::say('Kitty');
+
+require_once ('page.php');
+
+Page::render();
+
+require_once ('static.php');
+
+for ($objs = [], $i = 0; $i < 6; $i++) {
+    $objs[$i] = new Counter();
+}
+
+echo "Сейчас существует {$objs[0]->getCount()} объектов.<br/>";
+
+$objs[5] = null;
+
+echo"А теперь - {$objs[0]->getCount()} объекстов.<br/>";
+
+$objs = [];
+
+echo 'Под конец осталось - '. Counter::getCount() .'  Объектов. <br/><br/>';

Koterov-php-training/methods_of_classes/object.php

@@ -0,0 +1,5 @@
+<?php
+
+class Config {
+    
+}

Koterov-php-training/methods_of_classes/page.php

@@ -0,0 +1,23 @@
+<?php
+
+class Page
+{
+    static $content = 'about<br/>';
+
+    public static function footer()
+    {
+        return 'footer<br/>';
+    }
+    public static function header()
+    {
+        return 'header<br/>';
+    }
+
+    public static function render()
+    {
+        echo self::header() .
+            self::$content .
+            self::footer();
+        echo '<br/>';
+    }
+}

Koterov-php-training/methods_of_classes/settings.php

@@ -0,0 +1,23 @@
+<?php
+class Settings
+{
+    private array $properties;
+
+    public function __get(string $key): string
+    {
+        if (array_key_exists($key, $this->properties)) {
+            return $this->properties[$key];
+        } else {
+            return null;
+        }
+    }
+
+    public function __set(string $key, $value): void
+    {
+        $this->properties[$key] = $value;
+    }
+    public function list(): array
+    {
+        return $this->properties;
+    }
+}

Koterov-php-training/methods_of_classes/static.php

@@ -0,0 +1,25 @@
+<?php
+
+class Counter
+{
+    private static $count = 0;
+
+    public function __construct()
+    {
+        self::$count++;
+    }
+
+    public function __destruct()
+    {
+        self::$count--;
+    }
+    public static function getCount(): int   
+    {
+        return self::$count;
+    }
+}
+
+
+
+
+

Koterov-php-training/methods_of_classes/static_greeting.php

@@ -0,0 +1,9 @@
+<?php
+
+class StaticGreeting 
+{
+    public static function say(string $who) :string
+     {
+        return "Hello, $who!</br></br>";
+    }
+}

cristmass-tree/index.php

@@ -2,5 +2,5 @@
 
 include_once ('tree.php');
 
-$cristmassTree = new Tree(50);
+$cristmassTree = new Tree(25);
 $cristmassTree->drawTree();