add this to git finally

2025-05-19 12:51:46 +03:00
parent 7a8e69d87d
commit 11b7696c19
13 changed files with 760 additions and 0 deletions
--- a/tutorial.php
+++ b/tutorial.php
@ -0,0 +1,167 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Vulnerability testing</title>
+</head>
+<body>
+    <h1>Welcome to vulnerability testing! Powered by PHP!</h1>
+    <?= 'Hello world!' ?>
+    <?php 
+        // datatypes are inferred at runtime
+        $name = "John";
+        $age = 30;
+        $height = 1.85;
+        $isActive = true;
+        $skills = ["PHP", "JS"];
+        $person = null;
+
+        echo nl2br("\n\n");
+        var_dump($skills);
+    ?>
+ 
+    <?php
+        // type juggling
+        $a = "5";
+        $b = 2;
+
+        $c = $a+$b;
+
+        echo nl2br("\n\ntype juggling:\n");
+        var_dump($c); // whaddaya think? of course, it's int(7)
+    ?>
+
+    <?php
+        if ($age > 18) {
+            echo "Adult";
+        } elseif ($age > 12) {
+            echo "Teenager";
+        } else {
+            echo "Child";
+        }
+        echo nl2br("\n\n");
+
+        switch($day) {
+            case "Monday":
+                echo "Start of week";
+                break;
+            case "Friday":
+                echo "End of week";
+                break;
+            default:
+                echo "Mid-week";
+        }
+        echo nl2br("\n\n");
+
+        for ($i = 0; $i < 5; $i++) {
+            echo $i;
+        }
+        echo nl2br("\n\n");
+
+        $fruits = ["apple", "banana", "orange"];
+
+        foreach($fruits as $fruit) {
+            echo $fruit;
+        }
+        echo nl2br("\n\n");
+
+        foreach($fruits as $index => $fruit) {
+            echo "$index: $fruit";
+        }
+        echo nl2br("\n\n");
+
+        $i = 0;
+        while ($i < 5) {
+            echo $i++;
+        }
+        echo nl2br("\n\n");
+    ?>
+
+    <?php
+        $name = "John";
+        $age = 20;
+
+        echo "Hello, $name! You are $age years old!";
+
+        // for complex, use squirly braces {}
+        /* echo "Hello, {$name}! In 5 years, you'll be {$age + 5} years old."; */ // HACK: doesn't work for some way?
+
+        // NOTE: single quote strings don't interpolate!!!
+        echo nl2br("\n\n");
+    ?>
+
+    <?php
+        function greet($name, $greeting = "Hello") {
+            return "$greeting, $name!";
+        }
+
+        echo greet("John");
+        echo greet("Mary", "Hi");
+
+        $multiply = function($a, $b) {
+            return $a * $b;
+        };
+
+        echo $multiply(3,4);
+        echo nl2br("\n\n");
+    ?>
+
+    <?php
+        class Person {
+            public $name;
+            private $age;
+
+            public function __construct($name, $age) {
+                $this->name = $name;
+                $this->age = $age;
+            }
+
+            public function greet() {
+                return "Hello, my name is {$this->name} and I'm {$this->age} years old.";
+            }
+
+            public function getAge() {
+                return $this->age;
+            }
+        }
+
+        $person = new Person("John", 30);
+        echo $person->greet();
+        echo $person->getAge();
+        echo nl2br("\n\n");
+    ?>
+
+    <?php
+        $fruits = ["apple", "banana", "orange"];
+        echo $fruits[0];
+        echo nl2br("\n");
+
+        $person = [
+            "name" => "John",
+            "age" => 30,
+            "city" => "NewYork"
+        ];
+        echo $person["name"];
+        echo nl2br("\n");
+
+        $users = [
+            ["name" => "John", "age" => 30],
+            ["name" => "Mary", "age" => 25],
+        ];
+        echo $users[1]["name"];
+        echo nl2br("\n");
+
+        $fruits[] = "grape"; // add item to the end
+        $person["job"] = "developer"; // add new K-V pair
+
+        $count = count($fruits);
+        $exists = in_array("apple", $fruits);
+        sort($fruits);
+        $keys = array_keys($person);
+        $values = array_values($person);
+
+        echo nl2br("\n\n");
+    ?>
+</body>
+</html>