diff --git a/Bicycle.php b/Bicycle.php
new file mode 100644
index 0000000..d67aa99
--- /dev/null
+++ b/Bicycle.php
@@ -0,0 +1,41 @@
+<?php
+class Bicycle
+{
+    var $brand;
+    var $model;
+    var $year;
+    var $description = "Used Bicycle";
+    var $weight_kg = 0.0;
+
+
+    function name()
+    {
+        return "{$this->brand}, {$this->model} ({$this->year})";
+    }
+
+    function weight_lbs()
+    {
+        return (floatval($this->weight_kg) * 2.2046226218) . " lbs";
+    }
+
+    function set_weight_lbs($value)
+    {
+        $this->weight_kg = floatval($value) / 2.2046226218;
+    }
+}
+
+$bicycle = new Bicycle;
+
+$bicycle->brand = "new";
+$bicycle->model = "SDN";
+$bicycle->year = 2019;
+$bicycle->weight_kg = 75;
+
+const BR = "<br>";
+
+echo "Bicycle Name: {$bicycle->name()}" . BR;
+echo "Bicycle Weight (lbs): {$bicycle->weight_lbs()}" . BR;
+echo "Bicycle Weight (kg): " . ($bicycle->weight_lbs() / 2.2046226218) . BR;
+echo "Bicycle set Weight to 200 lbs: " . ($bicycle->set_weight_lbs(200)) . BR;
+echo "Bicycle Weight (lbs): {$bicycle->weight_lbs()}" . BR;
+echo "Bicycle Weight (kg): {$bicycle->weight_kg}" . BR;
diff --git a/Customer.php b/Customer.php
new file mode 100644
index 0000000..03ac184
--- /dev/null
+++ b/Customer.php
@@ -0,0 +1,28 @@
+<?php
+include './Human.php';
+
+class Customer extends Human
+{ }
+
+echo "<title>PHP OOP Sandbox </title>";
+const BR = "<br>";
+
+
+
+
+
+
+$kamal = new Customer;
+$kamal->frist_name = "Kamal";
+$kamal->second_name = "Farouk";
+$kamal->birth_date['d'] = 23;
+$kamal->birth_date['m'] = 7;
+$kamal->birth_date['y'] = 1992;
+
+echo $kamal->full_name() . BR;
+
+// $omer = new Customer;
+// $omer->frist_name = "Omer";
+// $omer->second_name = "Ali";
+// echo $omer->full_name() . BR;
+
diff --git a/Human.php b/Human.php
new file mode 100644
index 0000000..6bcc69b
--- /dev/null
+++ b/Human.php
@@ -0,0 +1,19 @@
+<?php
+class Human
+{
+    var $first_name;
+    var $second_name;
+    var $birth_date = [];
+
+    function full_name()
+    {
+        return  "{$this->frist_name} {$this->second_name}";
+    }
+
+    function age()
+    {
+
+        return "";
+    }
+}
+
diff --git a/Product.php b/Product.php
new file mode 100644
index 0000000..c3f1267
--- /dev/null
+++ b/Product.php
@@ -0,0 +1,24 @@
+<?php
+class Product
+{ }
+const BR = "<br>";
+$tile = new Product;
+$facade = new Product;
+$classes = ['Product', 'Category', 'product'];
+
+echo "<title>PHP OOP Sandbox </title>";
+echo get_class($tile) .BR;
+
+foreach ($classes as $class) {
+    if (is_a($tile, $class)) {
+        echo "Tile is a {$class} instance" .BR;
+    } else {
+        echo "Tile is not a {$class} instance" .BR;
+    }
+
+    if (is_a($facade, $class)) {
+        echo "Facade is a {$class} instance" .BR;
+    } else {
+        echo "Facade is not a {$class} instance" .BR;
+    }
+}
diff --git a/Student.php b/Student.php
new file mode 100644
index 0000000..750c659
--- /dev/null
+++ b/Student.php
@@ -0,0 +1,4 @@
+<?php
+class Student{
+    
+}
\ No newline at end of file
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..85a73e1
--- /dev/null
+++ b/index.php
@@ -0,0 +1,3 @@
+<?php
+echo "<title>PHP OOP Sandbox </title>";
+echo "<h1> working </h1>";
diff --git a/object_basic.php b/object_basic.php
new file mode 100644
index 0000000..d897b87
--- /dev/null
+++ b/object_basic.php
@@ -0,0 +1,15 @@
+<?php
+
+class Product
+{ }
+$classes = get_declared_classes();
+echo "Classes: " . implode(",<br> ", $classes) . "<br>";
+
+$class_names = ['Product', 'Category', 'Project', 'product'];
+foreach ($class_names as $class_name) {
+    if (class_exists($class_name)) {
+        echo "{$class_name} is declared class.<br>";
+    } else {
+        echo "{$class_name} is not declared class.<br>";
+    }
+}