"Solution: Javier Fernández"

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "abusaidm.html-snippets"
+    ]
+}

README.md

@@ -49,3 +49,8 @@ To deliver this project you must follow the steps indicated in the document:
 - [How to install XAMPP on Windows](https://www.youtube.com/watch?v=h6DEDm7C37A)
 - [What is a web server?](https://www.youtube.com/watch?v=Yt1nesKi5Ec)
 - [Web server basics](https://www.youtube.com/watch?v=3VqfpVKvlxQ)
+
+
+
+Note:
+All the comments are spanish/english just to save this code and use it in the future.

Transaction.php

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+<?php
+/*
+ Single class per file is the recomended
+
+
+$amount y $description daran NULL si no le asignamos un valor.Es el modo default
+
+declare(strict_types=1);
+
+class Transaction
+{
+
+public float $amount;
+public string $description;
+
+
+public function __construct(float $amount, $description)
+{
+    $this-> amount = $amount;
+    $this-> description = $description;
+}
+
+public function addTax(float $rate) 
+{
+    $this->amount += $this->amount * $rate / 100;
+}
+
+
+
+
+public function applyDiscount(float $rate)
+{
+    $this->amount += $this->amount * $rate / 100;
+}
+
+}
+
+
+
+ Construction method or magic method y se escribe asi:    __ 
+
+
+Definicion rapida :   class comoSeLlame {var $propiedad y  function method()};
+*/
+
+
+
+
+
+
+?>

arrays.php

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+<?php
+
+
+/* $array = array('Paco', 'Pepe', 'Raul');
+print_r($array);
+
+$array = array(1, 1, 1, 1,  1, 8 => 1,  4 => 1, 19, 3 => 13);
+print_r($array); */
+
+
+/* Multidimensional array
+$data = array(
+    array(1, 2, 3),
+     "John", 
+     "Jane"
+    );
+
+ print_r($data);
+
+echo $data[0][1]; */
+
+
+
+
+
+/* Lo que metemos dentro del corchete se llama index o key, pero si no se definen las keys, PhP lo hara automaticamente,empezando en 0,  */
+
+/* $progranmingLanguages = ['PHP', 'Java', 'Python'];
+
+$name = 'Gio';
+ */
+/* echo $name[1];
+
+echo $progranmingLanguages[0]; */
+
+
+/* Para ver si el item existe y envitar errores podemos usar por ejemplo: 
+la funcion isset . ideal para saber si existe*/
+
+/* var_dump(isset($programingLanguages[0]));
+var_dump(isset($programingLanguages[3])); */
+
+
+/* Y si queremos cambiar pro ejemplo 'Java' por C++? */
+
+
+/* $progranmingLanguages[1] = 'C++'; */
+/* echo $progranmingLanguages[1]; */
+/* var_dump($progranmingLanguages);
+print_r($progranmingLanguages); */
+
+/* la mejor manera de verlo seria asi:
+ echo '<pre';
+ print_r($programingLanguages);
+ echo '</pre>';
+ */
+
+
+
+/*$progranmingLanguages = ['PHP', 'Java', 'Python'];
+
+$progranmingLanguages[] = 'C++';   /* Esta es la forma mas sencilla */
+/*array_push($progranmingLanguages, 'C++', 'C', 'GO');  /* Esta es mas complicada */
+/* estas son las dos formas de agreganrelementos al array como el push() de javascript
+ */
+
+
+
+/* array_pad() - Rellena un array a la longitud especificada con un valor
+list() - Asignar variables como si fueran un array
+count() - Cuenta todos los elementos de un array o algo de un objeto
+range() - Crear un array que contiene un rango de elementos
+foreach
+El tipo array
+
+https://www.php.net/manual/es/function.array.php
+https://www.youtube.com/watch?v=wLoPGWwMamc */
+?>
+
+
+
+
+
+<?php
+
+
+$programingLanguages = ['PHP', 'Java', 'Python'];
+
+
+var_dump($progranmingLanguages['php']);
+
+
+
+$progranmingLanguages = [
+    'php ' => '8.0',
+    'python' > '3.9'
+];
+
+
+
+/* echo '<pre';
+print_r($programingLanguages);
+echo '</pre>';
+
+echo $progranmingLanguages['php'];
+
+
+$programingLanguages['go'] = '1.15';
+
+echo $programingLanguages;
+
+
+
+https://www.youtube.com/watch?v=C8ZFLq24g_A
+https://www.php.net/manual/es/function.array.php */
+
+?>

conditionals.php

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+<?php
+
+
+/* CONDITIONAL STATEMENTS */
+/* $Monday = 1;
+$Tuesday = 2;
+$Wednesday = 3;
+$Thursday = 4;
+$Friday = 5;
+$Saturday = 6;
+$Sunday = 7; */
+
+/* $date  = date("d");
+$dayinweek = date("w"); */
+
+/* $Monday = 5;
+$Tuesday = 2;
+
+if ($Monday > $Tuesday) {
+    echo "We are on Monday";
+  }
+
+
+$date1 = "10";
+$date2 = "05";
+
+if ($date1 > $date2)
+    echo "We are in October $date1";
+else
+    echo " We are in May $date2";
+ */
+
+
+
+
+/* elseif/else if */
+/* $a = 10;
+$b = 15;
+
+
+if ($a < $b) {
+    echo "The current minute is less than 10";
+} elseif ($a > $b) {
+    echo "The current minute is more than 15";
+} else {
+    echo "Does not meet any conditions";
+}
+
+
+Switch: */
+
+
+$x = 8;
+
+
+switch ($x) {
+    case 1:
+    echo "The answer is 1";
+    break;
+    case 2:
+        echo "This answer is 2";
+        break;
+        case 3:
+            echo "The answer is 3";
+            break;
+            case 4:
+                echo "The answer is 4";
+                break;
+                case 5:
+                    echo "The answer is 5";
+                    break;
+                    default:
+                    echo "There is no answer";
+}
+
+
+
+
+?>

dates.php

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+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Document</title>
+</head>
+
+<body>
+
+
+  <!--    importante :
+  'tomorrow'
+  'next tuesday'
+  'last day of month'
+  'tomorrow noon'
+  '10/10/2021 7:00' 
+ -->
+
+
+  <?php
+/*  Date & Time */
+
+$currentTime = time();
+
+echo $currentTime . '<br />' ; 
+
+/* echo $currentTime + 5 * 24 * 60 *60;       los dias dentro de 5 dias, 5 dias, 24horas..etc */
+
+/* echo $currentTime - 60 * 60 * 24;   el tiempo de ayer */
+
+/* Importante */
+echo date('m/d/Y g:ia ') . '<br />';  
+
+/* la g nos da el formato 24h sin ceros, la i los minutos sin ceros y la a nos dice si es A.M o P.M */
+
+
+/* Otro ejemplo */
+echo date('m/d/Y g:ia ', $currentTime + 5 * 24 * 60 *60 ) . '<br />';  
+
+/* Y para cambiar la franja horaria, seria algo asi: */
+date_default_timezone_set('UTC');
+
+echo date('m/d/Y g:ia ') . '<br />'; 
+
+
+echo date_default_timezone_get()  .  '<br />';
+
+
+/* Otra cosa importante para convertir 'parse dates' string representation en unidades de tiempo, ejemplo: */
+
+echo date('m/d/Y g:ia', mktime(0, 0, 0, 4, 10, null)) . '<br />';   
+/* String to time function */
+echo strtotime('2021-01-18 07:00:00') . '<br />';
+
+/* Mola poder ponerle por ejemplo el tomorrow asi: */
+/*  o 'las day of february'  o 'second friday of January'  etc */
+echo date('m/d/Y g:ia', strtotime('tomorrow'));
+
+
+?>
+
+  <!--   Info importante por si se me olvida algo :
+  https://www.php.net/manual/en/datetime.format.php
+  https://www.php.net/manual/en/timezones.php
+  https://www.php.net/manual/en/datetime.formats.relative.php -->
+</body>
+
+</html>