مرجع PHP

$arr = [1, 2, 3, 4, 5];
echo count($arr); // الناتج: 5

$arr = [1, 2, 3];
array_push($arr, 4, 5);
print_r($arr); // الناتج: [1, 2, 3, 4, 5]

$arr = [1, 2, 3];
$last = array_pop($arr);
echo $last; // الناتج: 3

$arr = [1, 2, 3];
$first = array_shift($arr);
echo $first; // الناتج: 1

$arr = [2, 3, 4];
array_unshift($arr, 1);
print_r($arr); // الناتج: [1, 2, 3, 4]

$arr = ["apple", "banana", "orange"];
echo in_array("banana", $arr) ? "Yes" : "No"; // الناتج: Yes

$arr1 = [1, 2, 3];
$arr2 = [4, 5, 6];
$result = array_merge($arr1, $arr2);
print_r($result); // الناتج: [1, 2, 3, 4, 5, 6]

$keys = ["name", "age"];
$values = ["Ahmed", 25];
$result = array_combine($keys, $values);
print_r($result); // الناتج: ["name" => "Ahmed", "age" => 25]

$arr = ["name" => "Ahmed", "age" => 25];
print_r(array_keys($arr)); // الناتج: ["name", "age"]

$arr = ["name" => "Ahmed", "age" => 25];
print_r(array_values($arr)); // الناتج: ["Ahmed", 25]

$arr = ["Ahmed" => "name", 25 => "age"];
print_r(array_flip($arr)); // الناتج: ["name" => "Ahmed", "age" => 25]

$arr = [1, 2, 3, 4, 5];
print_r(array_reverse($arr)); // الناتج: [5, 4, 3, 2, 1]

$arr = [1, 2, 2, 3, 4, 4, 5];
print_r(array_unique($arr)); // الناتج: [1, 2, 3, 4, 5]

$arr = [1, 2, 3, 4, 5];
print_r(array_slice($arr, 1, 3)); // الناتج: [2, 3, 4]

$arr = [1, 2, 3, 4, 5];
array_splice($arr, 2, 2, [99, 100]);
print_r($arr); // الناتج: [1, 2, 99, 100, 5]

$arr = [1, 2, 3, 4, 5];
$result = array_map(fn($n) => $n * 2, $arr);
print_r($result); // الناتج: [2, 4, 6, 8, 10]

$arr = [1, 2, 3, 4, 5, 6];
$result = array_filter($arr, fn($n) => $n % 2 == 0);
print_r($result); // الناتج: [2, 4, 6]

$arr = [1, 2, 3, 4, 5];
$sum = array_reduce($arr, fn($carry, $n) => $carry + $n, 0);
echo $sum; // الناتج: 15

$arr1 = [1, 2, 3, 4];
$arr2 = [2, 4];
$diff = array_diff($arr1, $arr2);
print_r($diff); // [1, 3]

$arr1 = [1, 2, 3, 4];
$arr2 = [2, 4, 5];
$common = array_intersect($arr1, $arr2);
print_r($common); // [2, 4]

$arr = ["a" => 1, "b" => 2, "c" => 3];
$values = array_values($arr);
print_r($values); // [1, 2, 3]

$arr = [1, 2, 3, 4];
$reversed = array_reverse($arr);
print_r($reversed); // [4, 3, 2, 1]

$arr = [1, 2, 2, 3, 4, 4, 5];
$unique = array_unique($arr);
print_r($unique); // [1, 2, 3, 4, 5]

$arr = [1, 2, 3, 4];
$first = array_shift($arr);
echo $first; // 1

$arr = [2, 3, 4];
array_unshift($arr, 1);
print_r($arr); // [1, 2, 3, 4]

$arr = [4, 2, 8, 1];
sort($arr);
print_r($arr); // [1, 2, 4, 8]

$arr = [4, 2, 8, 1];
rsort($arr);
print_r($arr); // [8, 4, 2, 1]

$arr = [1, 2, 3, 4, 5];
$slice = array_slice($arr, 1, 3);
print_r($slice); // [2, 3, 4]

$arr = [1, 2, 3, 4, 5];
array_splice($arr, 1, 2, [99, 100]);
print_r($arr); // [1, 99, 100, 4, 5]

$conn = mysqli_connect("localhost", "root", "", "database_name");
if (!$conn) {
    die("فشل الاتصال: " . mysqli_connect_error());
}

$sql = "SELECT * FROM users";
$result = mysqli_query($conn, $sql);

$row = mysqli_fetch_assoc($result);
echo $row["username"];

$row = mysqli_fetch_array($result);
echo $row[0];

$row = mysqli_fetch_row($result);
echo $row[0];

$num_rows = mysqli_num_rows($result);
echo "عدد المستخدمين: " . $num_rows;

$affected_rows = mysqli_affected_rows($conn);
echo "عدد الصفوف المتأثرة: " . $affected_rows;

$safe_input = mysqli_real_escape_string($conn, $_POST["username"]);

mysqli_close($conn);

$pdo = new PDO("mysql:host=localhost;dbname=database_name", "root", "");

$stmt = $pdo->prepare("SELECT * FROM users WHERE id = ?");

$stmt->execute([1]);

$row = $stmt->fetch(PDO::FETCH_ASSOC);
echo $row["username"];

$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
foreach ($rows as $row) {
    echo $row["username"] . "<br>";
}

$last_id = $pdo->lastInsertId();
echo "آخر ID تم إدخاله: " . $last_id;

$pdo->beginTransaction();

$pdo->commit();

$pdo->rollBack();

echo time(); // مثال: 1707825600

echo date("Y-m-d H:i:s"); // مثال: 2025-02-13 14:30:00

$timestamp = strtotime("next Monday");
echo date("Y-m-d", $timestamp); // مثال: 2025-02-19

$timestamp = mktime(14, 30, 0, 2, 13, 2025);
echo date("Y-m-d H:i:s", $timestamp); // الناتج: 2025-02-13 14:30:00

$date_info = getdate();
print_r($date_info);

echo checkdate(2, 29, 2024) ? "Valid" : "Invalid"; // الناتج: Valid

date_default_timezone_set("Asia/Riyadh");
echo date("Y-m-d H:i:s"); // الزمن في الرياض

echo date_default_timezone_get(); // مثال: UTC

echo gmdate("Y-m-d H:i:s"); // مثال: 2025-02-13 12:30:00

error_reporting(E_ALL);
ini_set("display_errors", 1);

function checkAge($age) {
    if ($age < 18) {
        trigger_error("العمر أقل من 18!", E_USER_WARNING);
    }
}
checkAge(16);

function myErrorHandler($errno, $errstr) {
    echo "خطأ [$errno]: $errstr";
}
set_error_handler("myErrorHandler");
echo $undefinedVar; // سيتسبب في خطأ وسيتم التعامل معه

set_error_handler("myErrorHandler");
// تنفيذ بعض الأكواد...
restore_error_handler();

try {
    throw new Exception("حدث خطأ!");
} catch (Exception $e) {
    echo "تم التقاط الاستثناء: " . $e->getMessage();
}

function divide($a, $b) {
    if ($b == 0) {
        throw new Exception("لا يمكن القسمة على الصفر!");
    }
    return $a / $b;
}
try {
    echo divide(10, 0);
} catch (Exception $e) {
    echo "خطأ: " . $e->getMessage();
}

try {
    echo "المحاولة...";
} catch (Exception $e) {
    echo "خطأ!";
} finally {
    echo "تم التنفيذ!";
}

function myExceptionHandler($exception) {
    echo "استثناء: " . $exception->getMessage();
}
set_exception_handler("myExceptionHandler");
throw new Exception("حدث خطأ غير متوقع!");

set_exception_handler("myExceptionHandler");
// تنفيذ بعض الأكواد...
restore_exception_handler();

var_dump(error_get_last());

$file = fopen("example.txt", "r");

$file = fopen("example.txt", "r");
fclose($file);

$file = fopen("example.txt", "w");
fwrite($file, "Hello, world!");
fclose($file);

$file = fopen("example.txt", "r");
$content = fread($file, filesize("example.txt"));
fclose($file);
echo $content;

$content = file_get_contents("example.txt");
echo $content;

file_put_contents("example.txt", "Hello, PHP!");

$file = fopen("example.txt", "r");
$line = fgets($file);
fclose($file);
echo $line;

$file = fopen("example.txt", "r");
while (!feof($file)) {
    echo fgets($file);
}
fclose($file);

unlink("example.txt");

if (file_exists("example.txt")) {
    echo "الملف موجود";
} else {
    echo "الملف غير موجود";
}

echo filesize("example.txt");

rename("oldname.txt", "newname.txt");

copy("source.txt", "destination.txt");

if (is_readable("example.txt")) {
    echo "الملف قابل للقراءة";
}

if (is_writable("example.txt")) {
    echo "الملف قابل للكتابة";
}

mkdir("new_folder");

rmdir("new_folder");

$files = scandir("some_directory");
print_r($files);

if (move_uploaded_file($_FILES["file"]["tmp_name"], "uploads/" . $_FILES["file"]["name"])) { 
    echo "تم رفع الملف بنجاح!"; 
}

$file_type = mime_content_type($_FILES["file"]["tmp_name"]); 
if (!in_array($file_type, ["image/jpeg", "image/png", "application/pdf"])) { 
    die("نوع الملف غير مسموح!"); 
}

if ($_FILES["file"]["size"] > 2 * 1024 * 1024) { 
    die("حجم الملف كبير جدًا!"); 
}

$new_file_name = uniqid() . "_" . $_FILES["file"]["name"];
move_uploaded_file($_FILES["file"]["tmp_name"], "uploads/" . $new_file_name);

$extension = pathinfo($_FILES["file"]["name"], PATHINFO_EXTENSION); 
if (!in_array($extension, ["jpg", "png", "pdf"])) { 
    die("امتداد الملف غير مسموح!"); 
}

$image = imagecreatefromjpeg($_FILES["file"]["tmp_name"]); 
imagejpeg($image, "uploads/compressed.jpg", 70);

$image = imagecreatefromjpeg($_FILES["file"]["tmp_name"]); 
$resized = imagescale($image, 500, 500);
imagejpeg($resized, "uploads/resized.jpg");

ini_set("upload_max_filesize", "10M"); 
ini_set("post_max_size", "12M");

$sql = "INSERT INTO uploaded_files (file_name, file_type, file_size, file_path) 
        VALUES ('$new_file_name', '$file_type', '".$_FILES["file"]["size"]."', 'uploads/$new_file_name')";
mysqli_query($conn, $sql);

$data = ["name" => "Ahmed", "age" => 25];
$json = json_encode($data);
echo $json; // {"name":"Ahmed","age":25}

$json = '{"name":"Ahmed","age":25}';
$array = json_decode($json, true);
print_r($array);

$json = "{invalid json}";
json_decode($json);
echo json_last_error(); // تعرض نوع الخطأ

$xml = "<person><name>Ahmed</name><age>25</age></person>";
$person = simplexml_load_string($xml);
echo $person->name;

$person = simplexml_load_file("data.xml");
echo $person->name;

$xml = simplexml_load_string("<root><item>Hello</item></root>");
$dom = dom_import_simplexml($xml);
echo $dom->nodeName;

$parser = xml_parser_create();
xml_parse($parser, "<root><item>Hello</item></root>");
xml_parser_free($parser);

$parser = xml_parser_create();

$parser = xml_parser_create();
xml_parser_free($parser);

$ip = gethostbyname("example.com");
echo $ip;

$host = gethostbyaddr("8.8.8.8");
echo $host;

$socket = fsockopen("www.example.com", 80, $errno, $errstr, 30);
if ($socket) {
    echo "تم الاتصال بنجاح!";
    fclose($socket);
}

$socket = pfsockopen("www.example.com", 80);
if ($socket) {
    echo "تم إنشاء اتصال دائم!";
}

$client = stream_socket_client("tcp://www.example.com:80", $errno, $errstr, 30);
if ($client) {
    fwrite($client, "GET / HTTP/1.1
Host: example.com

");
    echo stream_get_contents($client);
    fclose($client);
}

$server = stream_socket_server("tcp://0.0.0.0:8080", $errno, $errstr);
if ($server) {
    while ($client = stream_socket_accept($server)) {
        fwrite($client, "مرحبًا بك في الخادم!");
        fclose($client);
    }
}

if (checkdnsrr("example.com", "A")) {
    echo "السجل موجود!";
}

$records = dns_get_record("example.com", DNS_A);
print_r($records);

$port = getservbyname("http", "tcp");
echo $port; // 80

$protocol = getprotobyname("tcp");
echo $protocol;

$number = 142.02454678964;
$rounded = round($number, 1); // التقريب إلى منزل عشرية واحدة
echo $rounded; // الناتج: 142.0

$number = 142.02454678964;
$rounded = round($number, 1); // التقريب إلى منزل عشرية واحدة
echo $rounded; // الناتج: 142.0

$number = 5.3;
$rounded = ceil($number);
echo $rounded; // الناتج: 6

$number = 5.9;
$rounded = floor($number);
echo $rounded; // الناتج: 5

$number = -10;
echo abs($number); // الناتج: 10

$base = 2;
$exp = 3;
echo pow($base, $exp); // الناتج: 8

$number = 16;
echo sqrt($number); // الناتج: 4

echo max(5, 10, 25, 8); // الناتج: 25

echo min(5, 10, 25, 8); // الناتج: 5

echo rand(1, 100); // ناتج عشوائي بين 1 و 100

echo mt_rand(1, 100); // ناتج عشوائي بين 1 و 100

$number = 12345.6789;
echo number_format($number, 2); // الناتج: 12,345.68

$hash = md5("password");
echo $hash;

$hash = sha1("password");
echo $hash;

$hash = hash("sha256", "password");
echo $hash;

$hashed_password = password_hash("my_password", PASSWORD_DEFAULT);
echo $hashed_password;

$password = "my_password";
$hashed_password = password_hash($password, PASSWORD_DEFAULT);
if (password_verify($password, $hashed_password)) {
    echo "كلمة المرور صحيحة!";
} else {
    echo "كلمة المرور غير صحيحة!";
}

$data = "Hello, World!";
$key = "mysecretkey";
$encrypted = openssl_encrypt($data, "AES-128-ECB", $key);
echo $encrypted;

$encrypted = "encrypted_text";
$key = "mysecretkey";
$decrypted = openssl_decrypt($encrypted, "AES-128-ECB", $key);
echo $decrypted;

$bytes = random_bytes(16);
echo bin2hex($bytes);

$number = random_int(1, 100);
echo $number;

$email = "[email protected]";
if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
    echo "البريد الإلكتروني صالح!";
} else {
    echo "بريد إلكتروني غير صالح!";
}

session_start();
$_SESSION["username"] = "Ahmed";

session_start();
session_destroy();

session_start();
session_unset();

session_start();
echo session_id();

session_start();
session_regenerate_id(true);

setcookie("user", "Ahmed", time() + 3600, "/");

echo $_COOKIE["user"];

echo $_SESSION["username"];

session_name("MySession");
echo session_name();

session_start();
session_write_close();

switch (session_status()) {
    case PHP_SESSION_DISABLED:
        echo "الجلسات غير مفعلة";
        break;
    case PHP_SESSION_NONE:
        echo "لم يتم بدء جلسة";
        break;
    case PHP_SESSION_ACTIVE:
        echo "الجلسة نشطة";
        break;
}

echo session_cache_limiter();

session_set_cookie_params(3600, "/", "", true, true);
session_start();

$params = session_get_cookie_params();
print_r($params);

$text = "Hello World!";
echo strlen($text); // الناتج: 12

$text = "hello";
echo strtoupper($text); // الناتج: HELLO

$text = "HELLO";
echo strtolower($text); // الناتج: hello

$text = "hello world";
echo ucfirst($text); // الناتج: Hello world

$text = "Hello World";
echo lcfirst($text); // الناتج: hello World

$text = "hello world";
echo ucwords($text); // الناتج: Hello World

$text = "  hello world  ";
echo trim($text); // الناتج: "hello world"

$text = "  hello world  ";
echo ltrim($text); // الناتج: "hello world  "

$text = "  hello world  ";
echo rtrim($text); // الناتج: "  hello world"

$text = "Hello World";
echo strpos($text, "World"); // الناتج: 6

$text = "Hello World";
echo str_replace("World", "PHP", $text); // الناتج: Hello PHP

$text = "Hello World";
echo substr($text, 6, 5); // الناتج: World

$text = "Hello";
echo strrev($text); // الناتج: olleH

$text = "apple,banana,orange";
$array = explode(",", $text);
print_r($array); // الناتج: Array ( [0] => apple [1] => banana [2] => orange )

$array = ["apple", "banana", "orange"];
$text = implode(", ", $array);
echo $text; // الناتج: apple, banana, orange

$text = "Hello ";
echo str_repeat($text, 3); // الناتج: Hello Hello Hello 

$text = "<script>alert('Hacked!');</script>";
echo htmlspecialchars($text); 
// الناتج: &lt;script&gt;alert('Hacked!');&lt;/script&gt;

$text = "<h1>Hello</h1>";
echo html_entity_decode($text); // الناتج: <h1>Hello</h1>

$text = "مرحبا بالعالم";
$newText = str_replace("العالم", "Ahmed", $text);
echo $newText; // مرحبا بـ Ahmed

$text = "Ahmed AlaaEldein";
$sub = substr($text, 0, 5);
echo $sub; // Ahmed

$text = "apple,banana,orange";
$fruits = explode(",", $text);
print_r($fruits); // [ "apple", "banana", "orange" ]

$fruits = ["apple", "banana", "orange"];
$text = implode(", ", $fruits);
echo $text; // apple, banana, orange

$text = "   Ahmed   ";
echo trim($text); // "Ahmed"

$html = "<script>alert('Hack!');</script>";
$safeHtml = htmlspecialchars($html);
echo $safeHtml; // &lt;script&gt;alert('Hack!');&lt;/script&gt;

$html = "<b>مرحبا</b> بالعالم!";
echo strip_tags($html); // مرحبا بالعالم!

$text = "AHMED ALAAELDEIN";
echo strtolower($text); // ahmed alaaeldein

$text = "ahmed alaaeldein";
echo strtoupper($text); // AHMED ALAAELDEIN

$text = "ahmed alaaeldein";
echo ucwords($text); // Ahmed AlaaEldein

$text = "Ahmed";
echo strrev($text); // demhA

$text = "Ahmed";
echo strlen($text); // 5

$text = "مرحبا بالعالم";
$pos = strpos($text, "العالم");
echo $pos; // 7

$text = "Ahmed";
echo str_shuffle($text); // قد ينتج "mAdhe" أو غيره

$text = "Hello ";
echo str_repeat($text, 3); // Hello Hello Hello 

$text = "This is a long text that needs wrapping.";
echo wordwrap($text, 10, "
");

$text = "Hello
World!";
echo nl2br($text); // Hello<br>World!

phpinfo();

$path = getenv("PATH");
echo $path;

putenv("MY_VAR=Hello");
echo getenv("MY_VAR");

$output = exec("ls -l");
echo $output;

$output = shell_exec("ls -l");
echo "<pre>$output</pre>";

system("ls -l");

passthru("ls -l");

$max_upload = ini_get("upload_max_filesize");
echo $max_upload;

ini_set("display_errors", 1);

echo memory_get_usage() . " bytes";

echo gethostname();

echo getcwd();

chdir("/var/www/html");
echo getcwd();

unlink("file.txt");

$file = "/var/www/html/index.php";
echo basename($file); // index.php

$file = "/var/www/html/index.php";
echo dirname($file); // /var/www/html

echo disk_free_space("/");

echo disk_total_space("/");

class Car {
    public $brand;
    public function __construct($brand) {
        $this->brand = $brand;
    }
}
$car = new Car("Toyota");
echo $car->brand; // Toyota

class Test {
    public function __destruct() {
        echo "تم تدمير الكائن!";
    }
}
$obj = new Test();
unset($obj); // سيتم طباعة "تم تدمير الكائن!"

if (class_exists("Car")) {
    echo "الفئة موجودة!";
} else {
    echo "الفئة غير موجودة!";
}

class Test {
    public function sayHello() {
        return "Hello!";
    }
}
$obj = new Test();
if (method_exists($obj, "sayHello")) {
    echo $obj->sayHello();
}

class Person {
    public $name = "Ahmed";
}
$person = new Person();
if (property_exists($person, "name")) {
    echo "المتغير name موجود!";
}

class Animal {}
$dog = new Animal();
echo get_class($dog); // Animal

class Animal {}
class Dog extends Animal {}
$dog = new Dog();
echo get_parent_class($dog); // Animal

class Animal {}
class Dog extends Animal {}
$dog = new Dog();
if (is_subclass_of($dog, "Animal")) {
    echo "Dog يرث من Animal!";
}

interface Logger {}
if (interface_exists("Logger")) {
    echo "الإنترفيس موجود!";
}

trait ExampleTrait {}
if (trait_exists("ExampleTrait")) {
    echo "التريت موجود!";
}

class Test {
    public function __call($name, $arguments) {
        return "تم استدعاء الدالة غير الموجودة: " . $name;
    }
}
$obj = new Test();
echo $obj->missingMethod();

class Test {
    public static function __callStatic($name, $arguments) {
        return "تم استدعاء الدالة غير الموجودة: " . $name;
    }
}
echo Test::missingStaticMethod();

class Test {
    private $data = [];
    public function __get($name) {
        return "القيمة الافتراضية للخاصية: " . $name;
    }
}
$obj = new Test();
echo $obj->unknownProperty;

class Test {
    private $data = [];
    public function __set($name, $value) {
        echo "تم تعيين القيمة: $value للخاصية $name";
    }
}
$obj = new Test();
$obj->newProperty = "Hello";

class Test {
    private $data = [];
    public function __isset($name) {
        return false;
    }
}
$obj = new Test();
var_dump(isset($obj->unknownProperty));

class Test {
    private $data = [];
    public function __unset($name) {
        echo "تم حذف الخاصية: $name";
    }
}
$obj = new Test();
unset($obj->someProperty);

class Test {
    public function __toString() {
        return "تم استدعاء __toString()";
    }
}
$obj = new Test();
echo $obj;

class Test {
    public function __invoke($param) {
        return "تم استدعاء الكائن مع المعامل: " . $param;
    }
}
$obj = new Test();
echo $obj("Hello");

class Test {
    public $value;
    public function __clone() {
        $this->value = "تم استنساخه";
    }
}
$obj1 = new Test();
$obj2 = clone $obj1;
echo $obj2->value;

class Base {
    final public function sayHello() {
        echo "مرحبًا من Base";
    }
}
class Derived extends Base {
    // لا يمكن إعادة تعريف sayHello() هنا
}

abstract class Animal {
    abstract public function makeSound();
}
class Dog extends Animal {
    public function makeSound() {
        return "Woof!";
    }
}
$dog = new Dog();
echo $dog->makeSound();

interface Logger {
    public function log($message);
}
class FileLogger implements Logger {
    public function log($message) {
        echo "Logging to file: " . $message;
    }
}
$logger = new FileLogger();
$logger->log("Hello World!");

trait Logger {
    public function log($message) {
        echo "Log: " . $message;
    }
}
class User {
    use Logger;
}
$user = new User();
$user->log("User created!");

class Math {
    public static function add($a, $b) {
        return $a + $b;
    }
}
echo Math::add(5, 10);

$img = imagecreate(200, 100);
$bg_color = imagecolorallocate($img, 255, 255, 255);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(300, 200);
$bg_color = imagecolorallocate($img, 0, 0, 0);
imagefill($img, 0, 0, $bg_color);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 200);
$red = imagecolorallocate($img, 255, 0, 0);
imagefill($img, 0, 0, $red);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 200);
$blue = imagecolorallocate($img, 0, 0, 255);
imagefill($img, 0, 0, $blue);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 200);
$white = imagecolorallocate($img, 255, 255, 255);
imageline($img, 0, 0, 200, 200, $white);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 200);
$green = imagecolorallocate($img, 0, 255, 0);
imageellipse($img, 100, 100, 100, 100, $green);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 200);
$yellow = imagecolorallocate($img, 255, 255, 0);
imagerectangle($img, 50, 50, 150, 150, $yellow);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 200);
$purple = imagecolorallocate($img, 128, 0, 128);
imagearc($img, 100, 100, 150, 150, 0, 180, $purple);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 200);
$orange = imagecolorallocate($img, 255, 165, 0);
imagefilledrectangle($img, 50, 50, 150, 150, $orange);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 200);
$cyan = imagecolorallocate($img, 0, 255, 255);
imagefilledellipse($img, 100, 100, 100, 100, $cyan);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 100);
$white = imagecolorallocate($img, 255, 255, 255);
imagestring($img, 5, 50, 40, "Hello GD", $white);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(300, 150);
$white = imagecolorallocate($img, 255, 255, 255);
$font = "arial.ttf"; // ضع المسار الصحيح للخط
imagettftext($img, 20, 0, 50, 80, $white, $font, "Hello GD!");
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img1 = imagecreatefrompng("image1.png");
$img2 = imagecreatefrompng("image2.png");
imagecopy($img1, $img2, 50, 50, 0, 0, imagesx($img2), imagesy($img2));
header("Content-Type: image/png");
imagepng($img1);
imagedestroy($img1);
imagedestroy($img2);

$img = imagecreatetruecolor(200, 100);
$bg = imagecolorallocate($img, 255, 255, 255);
imagefill($img, 0, 0, $bg);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 100);
$bg = imagecolorallocate($img, 255, 255, 255);
imagefill($img, 0, 0, $bg);
header("Content-Type: image/jpeg");
imagejpeg($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 100);
$bg = imagecolorallocate($img, 255, 255, 255);
imagefill($img, 0, 0, $bg);
header("Content-Type: image/gif");
imagegif($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 100);
imagedestroy($img);

$src = imagecreatefromjpeg("source.jpg");
$dst = imagecreatetruecolor(100, 100);
imagecopyresampled($dst, $src, 0, 0, 0, 0, 100, 100, imagesx($src), imagesy($src));
header("Content-Type: image/jpeg");
imagejpeg($dst);
imagedestroy($src);
imagedestroy($dst);

$src = imagecreatefrompng("image1.png");
$dst = imagecreatefrompng("image2.png");
imagecopymerge($dst, $src, 50, 50, 0, 0, imagesx($src), imagesy($src), 50);
header("Content-Type: image/png");
imagepng($dst);
imagedestroy($src);
imagedestroy($dst);

$img = imagecreatefromjpeg("image.jpg");
imagefilter($img, IMG_FILTER_GRAYSCALE);
header("Content-Type: image/jpeg");
imagejpeg($img);
imagedestroy($img);

$img = imagecreatefromjpeg("image.jpg");
imageflip($img, IMG_FLIP_HORIZONTAL);
header("Content-Type: image/jpeg");
imagejpeg($img);
imagedestroy($img);

$img = imagecreatefrompng("image.png");
$resized = imagescale($img, 200, 200);
header("Content-Type: image/png");
imagepng($resized);
imagedestroy($img);
imagedestroy($resized);

$img = imagegrabscreen();
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$windowID = 12345; // يجب تحديد معرف النافذة
$img = imagegrabwindow($windowID);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$img = imagecreatefromjpeg("image.jpg");
$matrix = [[1, 1, 1], [1, -7, 1], [1, 1, 1]];
imageconvolution($img, $matrix, 1, 0);
header("Content-Type: image/jpeg");
imagejpeg($img);
imagedestroy($img);

$img = imagecreatetruecolor(200, 200);
imagealphablending($img, false);
imagelayereffect($img, IMG_EFFECT_OVERLAY);
header("Content-Type: image/png");
imagepng($img);
imagedestroy($img);

$to = "[email protected]";
$subject = "اختبار البريد";
$message = "هذا بريد اختبار تم إرساله من PHP!";
$headers = "From: [email protected]";
mail($to, $subject, $message, $headers);

// تثبيت المكتبة عبر Composer: composer require phpmailer/phpmailer
use PHPMailerPHPMailerPHPMailer;
use PHPMailerPHPMailerException;
require "vendor/autoload.php";

$mail = new PHPMailer(true);
$mail->isSMTP();
$mail->Host = "smtp.example.com";
$mail->SMTPAuth = true;
$mail->Username = "[email protected]";
$mail->Password = "password";
$mail->SMTPSecure = "tls";
$mail->Port = 587;

$mail->setFrom("[email protected]", "Sender Name");
$mail->addAddress("[email protected]");
$mail->Subject = "اختبار PHPMailer";
$mail->Body = "هذا هو نص البريد المرسل عبر PHPMailer!";
$mail->send();

$mail = new PHPMailer();
$mail->isSMTP();
$mail->Host = "smtp.example.com";
$mail->SMTPAuth = true;
$mail->Username = "[email protected]";
$mail->Password = "password";
$mail->SMTPSecure = "tls";
$mail->Port = 587;

$mail->setFrom("[email protected]", "Sender Name");
$mail->addAddress("[email protected]");
$mail->Subject = "إرسال ملف مرفق";
$mail->Body = "يرجى العثور على المرفق.";
$mail->addAttachment("file.pdf"); // إضافة ملف
$mail->send();

$mail = new PHPMailer();
$mail->isSMTP();
$mail->Host = "smtp.example.com";
$mail->SMTPAuth = true;
$mail->Username = "[email protected]";
$mail->Password = "password";
$mail->SMTPSecure = "tls";
$mail->Port = 587;

$mail->setFrom("[email protected]", "Sender Name");
$mail->addAddress("[email protected]");
$mail->Subject = "بريد HTML";
$mail->isHTML(true);
$mail->Body = "<h1>مرحبا!</h1><p>هذا بريد بصيغة HTML.</p>";
$mail->send();

$mail = new PHPMailer();
$mail->isSMTP();
$mail->SMTPDebug = 2; // تمكين التصحيح
$mail->Host = "smtp.example.com";
$mail->SMTPAuth = true;
$mail->Username = "[email protected]";
$mail->Password = "password";
$mail->SMTPSecure = "tls";
$mail->Port = 587;
$mail->setFrom("[email protected]", "Sender Name");
$mail->addAddress("[email protected]");
$mail->Subject = "اختبار التصحيح";
$mail->Body = "هذا بريد مع تمكين التصحيح.";
$mail->send();

$mail = new PHPMailer();
$mail->isSMTP();
$mail->Host = "smtp.example.com";
$mail->SMTPAuth = true;
$mail->Username = "[email protected]";
$mail->Password = "password";
$mail->SMTPSecure = "tls";
$mail->Port = 587;

$mail->setFrom("[email protected]", "Sender Name");
$mail->addAddress("[email protected]");
$mail->addCC("[email protected]"); // نسخة إلى
$mail->addBCC("[email protected]"); // نسخة مخفية
$mail->Subject = "CC & BCC Test";
$mail->Body = "هذا البريد يحتوي على CC و BCC.";
$mail->send();

$mail = new PHPMailer();
$mail->isSMTP();
$mail->Host = "smtp.example.com";
$mail->SMTPAuth = true;
$mail->Username = "[email protected]";
$mail->Password = "password";
$mail->SMTPSecure = "tls";
$mail->Port = 587;

$mail->setFrom("[email protected]", "Sender Name");
$mail->addAddress("[email protected]");
$mail->Subject = "بديل HTML";
$mail->isHTML(true);
$mail->Body = "<h1>مرحبا!</h1><p>هذا البريد يحتوي على HTML.</p>";
$mail->AltBody = "مرحبا! هذا هو النص البديل إذا كان HTML غير مدعوم.";
$mail->send();

$mail = new PHPMailer();
$mail->setLanguage("ar"); // تعيين اللغة إلى العربية

$mail = new PHPMailer();
$mail->addAddress("[email protected]");
$mail->ClearAllRecipients(); // حذف جميع المستلمين

$mail = new PHPMailer();
$mail->DKIM_domain = "example.com";
$mail->DKIM_private = "path/to/private.key";
$mail->DKIM_selector = "default"; 
$mail->DKIM_passphrase = "";
$mail->DKIM_identity = $mail->From;

$mail = new PHPMailer();
$mail->SMTPAutoTLS = false; // تعطيل التشفير التلقائي TLS

$mail = new PHPMailer();
$mail->isSendmail(); // استخدام sendmail بدلاً من SMTP

$ch = curl_init("https://example.com");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
echo $response;

$ch = curl_init("https://example.com");
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
$response = curl_exec($ch);
curl_close($ch);

$ch = curl_init("https://example.com");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
echo $response;

$ch = curl_init("https://example.com");
$response = curl_exec($ch);
if (curl_errno($ch)) {
    echo "Error: " . curl_error($ch);
}
curl_close($ch);

$html = file_get_contents("https://example.com");
echo $html;

libxml_use_internal_errors(true);
$doc = new DOMDocument();
$doc->loadHTML($html);
libxml_clear_errors();

$doc = new DOMDocument();
$doc->loadHTML($html);
$xpath = new DOMXPath($doc);
$nodes = $xpath->query("//h1");
foreach ($nodes as $node) {
    echo $node->nodeValue;
}

$doc = new DOMDocument();
$doc->loadHTML($html);
$xpath = new DOMXPath($doc);
$nodes = $xpath->query("//a/@href");
foreach ($nodes as $node) {
    echo $node->nodeValue . "\n";
}

$html = file_get_contents("https://example.com");
preg_match_all('/<a href="(.*?)">/i', $html, $matches);
print_r($matches[1]);

$context = stream_context_create([
    "http" => ["header" => "User-Agent: Mozilla/5.0"]
]);
$html = file_get_contents("https://example.com", false, $context);
echo $html;

$ch = curl_init("https://api.example.com/data");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
echo $response;

$ch = curl_init();
$options = [
    CURLOPT_URL => "https://api.example.com/data",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ["Accept: application/json"]
];
curl_setopt_array($ch, $options);
$response = curl_exec($ch);
curl_close($ch);
echo $response;

$json = '{"name": "Ahmed", "age": 25}';
$data = json_decode($json, true);
echo $data["name"]; // Ahmed

$data = ["name" => "Ahmed", "age" => 25];
$json = json_encode($data);
echo $json;

$params = ["name" => "Ahmed", "age" => 25];
$query = http_build_query($params);
echo $query; // name=Ahmed&age=25

$context = stream_context_create([
    "http" => ["method" => "GET", "header" => "Accept: application/json"]
]);
$response = file_get_contents("https://api.example.com/data", false, $context);
echo $response;

$client = new SoapClient("https://api.example.com/service?wsdl");
$response = $client->getData(["param" => "value"]);
print_r($response);

require "vendor/autoload.php";
use GuzzleHttp\Client;

$client = new Client();
$response = $client->get("https://api.example.com/data");
echo $response->getBody();

$headers = get_headers("https://example.com");
print_r($headers);

$url = "https://example.com?name=Ahmed&age=25";
$parts = parse_url($url);
print_r($parts);

http_response_code(404);
echo "Page not found";

<?php
print_r(opcache_get_status());
?>

<?php
opcache_reset();
?>

<?php
opcache_compile_file("script.php");
?>

<?php
opcache_invalidate("script.php");
?>

<?php
apcu_store("key", "value");
?>

<?php
$value = apcu_fetch("key");
echo $value;
?>

<?php
if (apcu_exists("key")) {
    echo "Key exists!";
} else {
    echo "Key does not exist.";
}
?>

<?php
apcu_delete("key");
?>

<?php
apcu_clear_cache();
?>

<?php
$handle = popen("ls -l", "r");
while (!feof($handle)) {
    echo fread($handle, 1024);
}
pclose($handle);
?>

<?php
$descriptorspec = [
    0 => ["pipe", "r"], // STDIN
    1 => ["pipe", "w"], // STDOUT
    2 => ["pipe", "w"]  // STDERR
];
$process = proc_open("php", $descriptorspec, $pipes);
if (is_resource($process)) {
    fwrite($pipes[0], "<?php echo 'Hello from process!'; ?>");
    fclose($pipes[0]);
    echo stream_get_contents($pipes[1]);
    fclose($pipes[1]);
    proc_close($process);
}
?>

<?php
$output = shell_exec("ls -l");
echo "<pre>$output</pre>";
?>

<?php
exec("ls -l", $output);
print_r($output);
?>

<?php
$pid = pcntl_fork();
if ($pid == -1) {
    die("فشل في إنشاء العملية");
} elseif ($pid) {
    echo "أنا العملية الرئيسية (Parent)
";
} else {
    echo "أنا العملية الفرعية (Child)
";
}
?>

<?php
$pid = pcntl_fork();
if ($pid) {
    pcntl_wait($status); // انتظار إنهاء العملية الفرعية
    echo "تم إنهاء العملية الفرعية.
";
} else {
    sleep(2);
    echo "العملية الفرعية انتهت.
";
}
?>

<?php
function signalHandler($signo) {
    echo "تم استقبال الإشارة: $signo
";
}
pcntl_signal(SIGTERM, "signalHandler");
posix_kill(posix_getpid(), SIGTERM);
?>

<?php
$sockets = [stream_socket_server("tcp://127.0.0.1:8000")];
$write = $except = null;
if (stream_select($sockets, $write, $except, 0)) {
    echo "تم اكتشاف نشاط على منفذ 8000.
";
}
?>

<?php
use parallelRuntime;
$runtime = new Runtime();
$future = $runtime->run(function() {
    return "Hello from thread!";
});
echo $future->value();
?>

* * * * * php /var/www/html/fetch_data.php

0 0 * * * php /var/www/html/cleanup.php

0 8 * * * php /var/www/html/send_email.php

exec("php long_task.php > /dev/null 2>&1 &");

$hashed_password = password_hash("mypassword", PASSWORD_BCRYPT);

if (password_verify($input_password, $stored_hashed_password)) { echo "كلمة المرور صحيحة!"; }

session_start();
$_SESSION["user_id"] = $user["id"];
$_SESSION["username"] = $user["username"];

session_start();
session_destroy();
header("Location: login.php");

if (!isset($_SESSION["user_id"])) { 
    header("Location: login.php");
    exit;
}

$reset_token = bin2hex(random_bytes(32));

$to = $user_email;
$subject = "استعادة كلمة المرور";
$message = "اضغط هنا لإعادة تعيين كلمة المرور: https://example.com/reset.php?token=$reset_token";
mail($to, $subject, $message);

if ($_SESSION["role"] !== "admin") { 
    die("ليس لديك صلاحية للوصول إلى هذه الصفحة!");
}

require("fpdf.php");
$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont("Arial", "B", 16);
$pdf->Cell(40, 10, "Hello, PDF!");
$pdf->Output("report.pdf", "D");

require("tcpdf.php");
$pdf = new TCPDF();
$pdf->AddPage();
$pdf->writeHTML("<h1>Report</h1><p>This is a TCPDF generated report</p>");
$pdf->Output("report.pdf", "D");

$file = fopen("report.csv", "w");
fputcsv($file, ["ID", "Title", "Description"]);
fclose($file);

require "PHPExcel.php";
$objPHPExcel = new PHPExcel();
$objPHPExcel->setActiveSheetIndex(0)->setCellValue("A1", "Report Title");
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, "Excel2007");
$objWriter->save("report.xlsx");

$stmt = $conn->prepare("SELECT * FROM users WHERE email = ?"); 
$stmt->bind_param("s", $email); 
$stmt->execute(); 
$result = $stmt->get_result();

$stmt = $pdo->prepare("SELECT * FROM users WHERE email = :email"); 
$stmt->bindParam(":email", $email); 
$stmt->execute(); 
$result = $stmt->fetchAll();

$safe_input = htmlspecialchars($_GET["input"], ENT_QUOTES, "UTF-8");

$clean_text = strip_tags($user_input);

$hashed_password = password_hash("mySecurePass123", PASSWORD_BCRYPT);

if (password_verify($user_input_password, $hashed_password)) { 
    echo "كلمة المرور صحيحة!"; 
} else { 
    echo "كلمة المرور خاطئة!"; 
}

session_start();
session_regenerate_id(true);

if ($_SESSION["role"] !== "admin") { 
    die("ليس لديك صلاحيات الوصول إلى هذه الصفحة."); 
}

$key = "my_secret_key"; 
$encrypted = openssl_encrypt("Hello World", "AES-256-CBC", $key, 0, "1234567812345678");

$decrypted = openssl_decrypt($encrypted, "AES-256-CBC", $key, 0, "1234567812345678");

$hash = hash("sha256", "my_secure_data");

session_set_cookie_params(["secure" => true, "httponly" => true, "samesite" => "Strict"]);

ini_set("session.cookie_httponly", 1);

ini_set("session.cookie_secure", 1);

$jwt = JWT::encode(["user_id" => 123, "exp" => time() + 3600], "secret_key");

$decoded = JWT::decode($jwt, "secret_key", ["HS256"]);

Authorization: Bearer YOUR_ACCESS_TOKEN

CREATE TABLE notifications (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    message TEXT NOT NULL,
    status ENUM("unread", "read") DEFAULT "unread",
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

$stmt = $pdo->prepare("INSERT INTO notifications (user_id, message) VALUES (?, ?)");
$stmt->execute([$user_id, "لديك رسالة جديدة"]);

$stmt = $pdo->prepare("SELECT * FROM notifications WHERE user_id = ? AND status = 'unread' ORDER BY created_at DESC");
$stmt->execute([$user_id]);
$notifications = $stmt->fetchAll();

$stmt = $pdo->prepare("UPDATE notifications SET status = 'read' WHERE id = ?");
$stmt->execute([$notification_id]);

$stmt = $pdo->prepare("DELETE FROM notifications WHERE created_at < NOW() - INTERVAL 30 DAY");
$stmt->execute();