Fundamentals
<form>Predefined Variables
$_GET$_POST$_COOKIE$_SESSION$_SERVERRelevant HTML tags/att.
<form>
method="POST"action="index.php?id=1"Built-in Functions
header()include()session_start()session_destroy()password_hash()password_verify()json_encode()isset()intval()file_get_contents()json_decode()Wrappers
php://Connecting to a DBMS
mysqli_connect()mysqli_construct()mysqli_query()mysqli_close()mysqli_num_rows()mysqli_fetch_assoc()Classes / Objects
publicprotectedprivateSQLite3PDOPDOStatementOperators
->::Glossary
Bug encounters
Fatal error: 8 attempt to write a readonly database