added learn php

Contributors.html

@@ -516,7 +516,6 @@
         <a class="box-item" href="https://github.com/YellowFoxH4XOR"><span>Akshat Katiyar</span></a>
         <a class="box-item" href="https://github.com/VivekBhand"><span>Vivek Bhand</span></a>
         <a class="box-item" href="https://github.com/Anmol55555"><span>Anmol Kesarwani</span></a>
-
         <a class="box-item" href="https://github.com/Aryan-Srivastava""><span>Aryan Srivastava</span></a>
         <a class=" box-item" href="https://github.com/Hackerrcracker"><span>Rahul Sharma</span></a>
         <a class="box-item" href="https://github.com/kindise"><span>Kindi Setiadi</span></a>
@@ -528,7 +527,7 @@
         <a class="box-item" href="https://github.com/mahatorakesh"><span>Rakesh Mahato</span></a>
         <a class="box-item" href="https://github.com/Palaksharma23"><span>Palak Sharma</span></a>
         <a class="box-item" href="https://github.com/Shivamdpandey"><span>Shivam Dhananjay Pandey</span></a>
-
+        <a class="box-item" href="https://github.com/fikriks"><span>Fikri Khairul Shaleh</span></a>
 
 
 

Program's_Contributed_By_Contributors/PHP_Programs/Attribute.php

@@ -0,0 +1,41 @@
+<?php
+
+#[Attribute]
+class Cart
+{
+
+}
+
+class Checkout
+{
+    #[NotEmpty]
+    public ?string $item;
+}
+
+// use reflaction
+function validate(object $object)
+{
+    $class = new ReflectionClass($object);
+    $properties = $class->getProperties();
+    foreach ($properties as $property) {
+        validateNotEmpty($property, $object);
+    }
+}
+
+// for get property
+function validateNotEmpty(ReflectionProperty $property, object $object)
+{
+    $attributes = $property->getAttributes(NotEmpty::class);
+    if (count($attributes) > 0) {
+        if (!$property->isInitialized($object))
+            throw new Exception("Property $property->name is null");
+        if ($property->getValue($object) == null)
+            throw new Exception("Property $property->name is null");
+    }
+}
+
+
+$request = new Checkout();
+// $request->item = "";
+$request->item = "1";
+validate($request);

Program's_Contributed_By_Contributors/PHP_Programs/ClassObject.php

@@ -0,0 +1,17 @@
+<?php
+
+// class
+class Order
+{
+
+}
+
+// create object
+$check_class = new Order();
+
+// pada php 7
+var_dump(get_class($check_class));
+var_dump(Order::class);
+
+// pada php 8
+var_dump($check_class::class);

Program's_Contributed_By_Contributors/PHP_Programs/ConsistentTypeError.php

@@ -0,0 +1,7 @@
+<?php
+
+strlen([]);
+// TypeError: strlen(): Argument #1 ($str) must be of type string, array given
+
+array_chunk([], -1);
+// ValueError: array_chunk(): Argument #2 ($length) must be greater than 0

Program's_Contributed_By_Contributors/PHP_Programs/ConstructorPropertyPromotion.php

@@ -0,0 +1,14 @@
+<?php
+
+class Order{
+
+    public function __construct(Public string $id, Public string $sender, Public string $receiver, Private int $quantity, Private string $item)
+    {}
+
+    public function getOrder(){
+        return "order id {$this->id} dengan pengirim bernama {$this->sender} dan penerimanya bernama {$this->receiver}";
+    }
+}
+
+$detail_order = new Order(id: "1", sender: "Fikri Khairul", receiver: "Shaleh", quantity: 2, item: "jajanan");
+var_dump($detail_order);

Program's_Contributed_By_Contributors/PHP_Programs/MatchExpression.php

@@ -0,0 +1,10 @@
+<?php
+$word = "Saya ingin berbelanja di shopee karena gratis ongkir";
+
+$result = match(true){
+    str_contains($word, "shopee") => "Kalimat anda mengandung kata sebuah aplikasi online store",
+    str_contains($word, "gojek") => "Kalimat anda mengandung kata sebuah aplikasi ojek online",
+    default => "Kalimat anda tidak mengandung kata apa pun"
+};
+
+echo $result;

Program's_Contributed_By_Contributors/PHP_Programs/MixedTypeV2.php

@@ -0,0 +1,16 @@
+<?php
+
+function funcMixed(mixed $param): mixed
+{
+    if (is_string($param)) {
+        return "String";
+    }else if(is_int($param)){
+        return 1;
+    }else if(is_array($param)){
+        return [];
+    }
+}
+
+var_dump(funcMixed('Ini adalah sebuah kalimat'));
+var_dump(funcMixed(120));
+var_dump(funcMixed(['array 1', 'array 2']));

Program's_Contributed_By_Contributors/PHP_Programs/NamedArgument.php

@@ -0,0 +1,6 @@
+<?php
+function funcTest($box_one = "", $box_two = "kambing", $box_three = "", $box_four = "sapi"){
+    echo $box_one .' '. $box_two .' '. $box_three .' '. $box_four;
+}
+
+return funcTest(box_one: "ikan", box_three: "kerbau");

Program's_Contributed_By_Contributors/PHP_Programs/NewStringFunction.php

@@ -0,0 +1,10 @@
+<?php
+
+// contains - mengandung kata kata yang kita cari
+var_dump(str_contains("Saya ingin Belanja Online di Shopee", "Shopee"));
+
+//  start with - mengandung kata kata yang kita cari di awal kata / kalimat
+var_dump(str_starts_with("PHP 8 adalah versi terbaru saat ini dari PHP", "PHP"));
+
+//  end with - mengandung kata kata yang kita cari di akhir kata / kalimat
+var_dump(str_ends_with("Hari Jumat", "Jumat"));

Program's_Contributed_By_Contributors/PHP_Programs/NullsafeOperator.php

@@ -0,0 +1,15 @@
+<?php
+class Order{
+    public ?string $item;
+}
+
+class Transaction{
+    public ?Order $order;
+}
+
+function getItem(?Transaction $transaction): ?string
+{
+    return $transaction?->order?->item;
+}
+
+echo getItem(null);

Program's_Contributed_By_Contributors/PHP_Programs/SanerStringToNumberComparison.php

@@ -0,0 +1,15 @@
+<?php 
+
+$compare_1 = 0 == "0";                        //   PHP 7 or earlier (TRUE) | PHP 8 (TRUE)
+$compare_2 = 0 == "0.0";                      //   PHP 7 or earlier (TRUE) | PHP 8 (TRUE)
+$compare_3 = 0 == "kata";                  //   PHP 7 or earlier (TRUE) | PHP 8 (FALSE)
+$compare_4 = 0 == "";                         //   PHP 7 or earlier (TRUE) | PHP 8 (FALSE)
+$compare_5 = 12 == "     60     ";            //   PHP 7 or earlier (TRUE) | PHP 8 (TRUE)
+$compare_6 = 12 == "ini adalah string60";     //   PHP 7 or earlier (TRUE) | PHP 8 (FALSE)
+
+var_dump($compare_1);
+var_dump($compare_2);
+var_dump($compare_3);
+var_dump($compare_4);
+var_dump($compare_5);
+var_dump($compare_6);

Program's_Contributed_By_Contributors/PHP_Programs/TrailingCommaInParameterList.php

@@ -0,0 +1,30 @@
+<?php
+
+function orderFood(string $store, string $item)
+{
+
+}
+
+orderFood(
+    "KFC",
+    "Paket Hemat 1",
+);
+
+$listOrder = [
+    "store" => "KFC",
+    "item" => "Paket Hemat 1",
+    "delivery_price" => "15.000",
+    "discount" => "5.000",
+    "total" => "50.000",
+    "driver" => "Fikri Khairul Shaleh",
+    "driver" => "Fikri Khairul Shaleh",
+    "driver" => "Fikri Khairul Shaleh",
+    "driver" => "Fikri Khairul Shaleh",
+    "driver" => "Fikri Khairul Shaleh",
+    "driver" => "Fikri Khairul Shaleh",
+    "driver" => "Fikri Khairul Shaleh",
+    "driver" => "Fikri Khairul Shaleh",
+    "driver" => "Fikri Khairul Shaleh",
+];
+
+print_r($listOrder);

Program's_Contributed_By_Contributors/PHP_Programs/UnionType.php

@@ -0,0 +1,24 @@
+<?php
+
+// Union Type Pada Property
+class word{
+    public float|string $data;
+}
+
+$get_word = new word();
+echo $get_word->data = "tipe string ini adalah kalimat";
+
+// Union Type Pada Value
+function funcTest(float|string|int $data): float|string|int {
+    if(is_int($data)) {
+        return 10;
+    } else if(is_float($data)) {
+        return 1.5;
+    } else if(is_string($data)) {
+        return 'ini adalah return string';
+    }
+}
+
+var_dump(funcTest("masukan string"));
+var_dump(funcTest(80));
+var_dump(funcTest(5.0));