Added Tutorial 7 code and made some fixes to practice assignments && solutions

Author: dima_los

tutorial-007-operators/complex-conditions.php

@@ -0,0 +1,11 @@
+<?php
+
+$myCoins = 55;
+$shieldPrice = 50;
+$isShieldAvailable = false;
+
+if (($myCoins > $shieldPrice || $myCoins === $shieldPrice) && $isShieldAvailable) {
+    echo 'You have enough coins to buy the shield!';
+} else {
+    echo 'You cannot buy the shield.';
+}

tutorial-007-operators/identical.php

@@ -0,0 +1,10 @@
+<?php
+
+$key = 'Obsidian';
+$entranceLock = 'Arcane';
+
+if ($key !== $entranceLock) {
+    echo 'You may enter the dungeon';
+} else {
+    echo 'You have the wrong key';
+}

tutorial-007-operators/logical-and.php

@@ -0,0 +1,14 @@
+<?php
+
+$hasSword = true;
+$hasShield = false;
+
+if ($hasSword && $hasShield) {
+    echo 'You have defeated the dragon!';
+} else {
+    echo 'Game over!';
+}
+
+// 1) pass 1,2,3 as an input to an operator
+// 2) the operator does some work
+// 3) then it returns a result

tutorial-007-operators/logical-not.php

@@ -0,0 +1,9 @@
+<?php
+
+$isHealingPotionExpired = true;
+
+if (!$isHealingPotionExpired) {
+    echo 'You have restored 7 hit points.';
+} else {
+    echo 'You health is low!';
+}

tutorial-007-operators/logical-or.php

@@ -0,0 +1,10 @@
+<?php
+
+$stoneBridgeSafe = false;
+$woodenBridgeSafe = false;
+
+if ($stoneBridgeSafe || $woodenBridgeSafe) {
+    echo 'You can cross the river!';
+} else {
+    echo 'You need to find another path!';
+}

tutorial-007-operators/practice-assignments/1-potion-brewer.php

@@ -1,8 +1,11 @@
 <?php
 /**
- **Description:**
+ **Potion Brewer: Mixing Ingredients**
 
-You are an alchemist in a fantasy world. You have four variables: $herb, $flower, $mushroom, and $crystal, each of which can be true (available) or false (not available).
+You are an alchemist in a fantasy world.
+
+You have four variables: $herb, $flower, $mushroom, and $crystal,
+each of which can be true (available) or false (not available).
 
 - You need both $herb and $flower to brew a healing potion.
 - You need either $mushroom or $crystal to brew a mana potion.
@@ -20,7 +23,7 @@
 $crystal = true;
 
 if ($herb && $flower) {
-    echo 'Healing potion brewed!';
+    echo 'Healing potion brewed!🍔';
 } elseif ($mushroom || $crystal) {
     echo 'Mana potion brewed!';
 } else {

tutorial-007-operators/practice-assignments/2-castle-gatekeeper.php

@@ -1,26 +1,27 @@
 <?php
 /**
- **Description:**
+ **Castle Gatekeeper: Granting Entry**
 
 You are the guardian of a magical castle.
+
 There are three variables: $password, $royalSeal, and $nightTime. 
 The $password can be a string, while $royalSeal and $nightTime are booleans.
 
-- Anyone with the correct $password ("OpenSesame") can enter during the day.
+- Anyone with the correct $password ("Castle Lord") can enter during the day.
 - If it's $nightTime, even with the correct password, they need to have the $royalSeal as well.
 
  **What to Do:**
 - If it's daytime and the password is correct, echo 'Welcome to the castle!'
 - If it's nighttime, they have the password and the royal seal, echo 'Welcome, noble guest!'
 - Otherwise, echo 'Entry denied!'
  */
-$password = 'OpenSesame';
+$password = 'Castle Lord';
 $royalSeal = true;
 $nightTime = true;
 
-if ($password === 'OpenSesame' && !$nightTime) {
+if ($password === 'Castle Lord' && !$nightTime) {
     echo 'Welcome to the castle!';
-} elseif ($nightTime && $password === 'OpenSesame' && $royalSeal) {
+} elseif ($nightTime && $password === 'Castle Lord' && $royalSeal) {
     echo 'Welcome, noble guest!';
 } else {
     echo 'Entry denied!';

tutorial-007-operators/practice-assignments/3-wizards-challenge.php

@@ -2,7 +2,8 @@
 /**
  **Wizard's Challenge: Spell Casting**
 
- **Description:** You are a wizard apprentice.
+You are a wizard apprentice.
+
 You have a variable $mana (a number) and two booleans, $hasSpellbook and $fullMoon.
 - You need at least 50 $mana and the $hasSpellbook to cast a basic spell.
 - If it's a $fullMoon, even with lower mana (let's say 30), you can still cast the basic spell with the spellbook.

tutorial-007-operators/practice-assignments/4-treasure-hunter.php

@@ -1,6 +1,9 @@
 <?php
 /**
- **Description:** You are on a quest for treasure.
+ **Treasure Hunter: Finding Loot**
+
+You are on a quest for treasure.
+
 You have three booleans: $hasMap, $hasCompass, and $foundXMark.
 
 - If you have both $hasMap and $foundXMark, you can locate the buried treasure.