چیت‌شیت PHP

1<?php2$firstName = "Ava";3$lastName = "Rostami";4$fullName = $firstName . " " . $lastName;5$message = "Hello, $firstName";

1<?php2$isAllowed = $role === "editor"3    && $isActive === true;

1<?php2echo htmlspecialchars(3    $userInput,4    ENT_QUOTES | ENT_SUBSTITUTE,5    "UTF-8"6);

1<?php2$scores = [18, 16, 20];3$scores[] = 17;45foreach ($scores as $score) {6    echo $score . PHP_EOL;7}

1<?php2$user = [3    "name" => "Ava",4    "active" => true,5];67echo $user["name"];

1<?php2$numbers = [1, 2, 3, 4];3$even = array_filter(4    $numbers,5    fn (int $number): bool => $number % 2 === 06);

1<?php2if ($score >= 18) {3    $result = "excellent";4} elseif ($score >= 10) {5    $result = "passed";6} else {7    $result = "retry";8}

1<?php2function add(int $first, int $second): int3{4    return $first + $second;5}

1<?php2function greet(string $name, string $prefix = "Hello"): string3{4    return "$prefix, $name";5}67greet(name: "Ava");

1<?php2require_once __DIR__ . "/bootstrap.php";

1<?php2$path = __DIR__ . "/data/config.json";3$contents = file_get_contents($path);45if ($contents === false) {6    throw new RuntimeException("Could not read configuration.");7}

1composer install2composer require vendor/package3composer dump-autoload

1<?php2final class User3{4    public function __construct(5        public readonly int $id,6        public string $name,7    ) {}8}

1<?php2try {3    $result = performOperation();4} catch (RuntimeException $error) {5    error_log($error->getMessage());6    throw $error;7}

1<?php2$statement = $pdo->prepare(3    "SELECT id, email FROM users WHERE id = :id"4);5$statement->execute(["id" => $userId]);6$user = $statement->fetch();