HTML CSS JavaScript PHP MySQL Bootstrap 5
PHP Developer

Practice & Master Your Skills

10
Exercises
5
Challenges
0
Total Points
Fill in the Blank
Code Challenges
Certificate
Exercise 1
10 pts
Start a PHP block.
echo "Hello"; ?>
Standard PHP opening tag
Exercise 2
10 pts
Access form data sent via POST method.
$name = ["username"];
Superglobal array for POST variables
Exercise 3
10 pts
Prepare and bind parameters in MySQLi.
$stmt = $conn->("SELECT * FROM users WHERE id=?");\n$stmt->("i", $id);
Prevents SQL injection
Exercise 4
10 pts
Securely hash a password.
$hash = ($password, PASSWORD_DEFAULT);
Creates a password hash using a strong one-way hashing algorithm
Exercise 5
10 pts
Start a session and set a session variable.
();\n["user_id"] = 5;
Used to manage user sessions across pages
Exercise 6
10 pts
Connect to a MySQL database.
$conn = ("localhost", "root", "", "mydb");
Function to open a new connection to the MySQL server
Exercise 7
10 pts
Sanitize output to prevent XSS.
echo ( $_POST["comment"] );
Converts special characters to HTML entities
Exercise 8
10 pts
Include a file and stop execution if missing.
"config.php";
Similar to include but produces a fatal error
Exercise 9
10 pts
Loop through an associative array.
($user as $key => $value) {\n echo "$key: $value";\n}
Provides an easy way to iterate over arrays
Exercise 10
10 pts
Redirect to another page.
("Location: login.php");\nexit;
Sends a raw HTTP header

1. Echo Variables

echo, strings

2. Form Handling

$_SERVER, $_POST

3. Session Login

session_start, heade

4. Database Query

query, fetch_assoc /

5. File Upload Check

$_FILES, UPLOAD_ERR_

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