JS Lab 3

2026-03-06 21:27:16 -05:00
parent 1fdfbb1b4f
commit 41ebd4ac62
21 changed files with 1018 additions and 43 deletions
@@ -0,0 +1,194 @@
+<?php
+
+/* Arrays */
+
+$months = array(
+  'January', // Index = 0
+  'February', // Index = 1
+  'March', // Index = 2
+);
+echo '<pre>';
+print_r($months);
+echo '</pre>';
+
+// Getting value from index
+echo '<pre>';
+print_r($months[1]);
+echo '</pre>';
+
+// Short hand
+$months = [
+  'January', // Index = 0
+  'February', // Index = 1
+  'March', // Index = 2
+];
+
+/* Associative Arrays */ 
+
+$months = [
+  'month1' => 'January',
+  'month2' => 'February',
+  'month3' => 'March'
+];
+echo '<pre>';
+print_r($months);
+echo '</pre>';
+echo '<pre>';
+print_r($months['month1']);
+echo '</pre>';
+
+/* Working with Arrays */
+
+// range()
+$numbers = range(1, 10); // Same as $numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+echo '<pre>';
+print_r($numbers);
+echo '</pre>';
+
+$numbers = range(1, 10, 2); // Same as $numbers = [1, 3, 5, 7, 9];
+echo '<pre>';
+print_r($numbers);
+echo '</pre>';
+
+// Adding to arrays
+$months = [
+  'January', // Index = 0
+  'February', // Index = 1
+  'March', // Index = 2
+];
+// Add to index 3
+$months[3] = 'April'; 
+// Change index 2
+$months[2] = 'May';
+// Add to end of array
+$months[] = 'June';
+echo '<pre>';
+print_r($months);
+echo '</pre>';
+
+/* Merging Arrays */
+$sem1grades = [
+  'math' => 90,
+  'chemistry' => 67,
+  'biology' => 88,
+  'history' => 45,
+  'gym' => 60,
+];
+$sem2grades = [
+  'philosophy' => 87,
+  'art' => 99,
+  'physics' => 71,
+  'gym' => 60,
+];
+
+// array_merge()
+$allGrades = array_merge($sem1grades, $sem2grades);
+echo '<pre>';
+print_r($allGrades);
+echo '</pre>';
+
+// Array Union
+$allGrades = $sem1grades + $sem2grades;
+echo '<pre>';
+print_r($allGrades);
+echo '</pre>';
+  
+/* Multidimensional arrays */
+$meats = [
+  'Pepperoni',
+  'Bacon',
+  'Ham',
+];
+$cheeses = [
+  'Mozzarella',
+  'Cheddar',
+  'Swiss',
+];
+$veggies = [
+  'Onions',
+  'Peppers',
+  'Mushrooms',
+];
+$toppings = [
+  'Meats' => $meats,
+  'Cheeses' => $cheeses,
+  'Veggies' => $veggies,
+  'Size' => 'Medium',
+];
+echo $toppings['Veggies'][1];
+echo '<br><br>';
+
+/* Printing Arrays */
+
+// foreach()
+foreach ($toppings as $type => $value) {
+  echo "{$type}:</br>";
+  if (is_array($value)) {
+    foreach ($value as $number => $topping) {
+      echo "Topping #{$number} is $topping</br>";
+    }
+  } 
+  else {
+    echo "{$type} is $value</br>";
+  }
+  echo "</br>";
+}
+
+$words = [
+  'The',
+  'cow',
+  'jumped',
+  'over',
+  'the',
+  'moon',
+];
+// implode()
+$sentence = implode(' ', $words);
+echo $sentence;
+echo '<br><br>';
+// explode()
+$words2 = explode(' ', $sentence);
+echo $words2;
+echo '<br><br>';
+
+/* Sorting Arrays */
+
+$array1 = [
+  3,
+  1,
+  4,
+  1,
+  5,
+  9,
+];
+// sort()
+sort($array1);
+echo '<pre>';
+print_r($array1);
+echo '</pre>';
+// rsort()
+rsort($array1);
+echo '<pre>';
+print_r($array1);
+echo '</pre>';
+
+$assocArray = [
+  'a' => 3,
+  'b' => 1,
+  'c' => 4,
+];
+// asort()
+asort($assocArray);
+echo '<pre>';
+print_r($assocArray);
+echo '</pre>';
+$assocArray = [
+  'a' => 3,
+  'b' => 1,
+  'c' => 4,
+];
+// ksort()
+ksort($assocArray);
+echo '<pre>';
+print_r($assocArray);
+echo '</pre>';