Sanitize HTML Output
Escapes browser-facing text with `htmlspecialchars()` at render time so names, notes, and labels cannot become executable HTML.
Open SnippetSnippet Library
Practical pure PHP patterns that are easy to study, adapt and use.
Send a JSON HTTP Header
Sets an HTTP status code and JSON content type header before encoding an API response payload.
Open SnippetRedirect to Another Page
Validates a local redirect target, sends a `Location` header, and exits before any accidental output can continue.
Open SnippetStart or Resume a Session
Starts a PHP session only when needed, sets safer cookie options before startup, and reports the resulting session status.
Open SnippetSet and Get a Session Variable
Sets one allowlisted session key, reads it back, and returns a clear status without storing credentials or raw sensitive data.
Open SnippetDestroy a Session
Destroys the active PHP session, clears the session array, and expires the session cookie for logout or reset workflows.
Open SnippetGet Server Information from $_SERVER
Reads an allowlisted subset of `$_SERVER`, normalizes common request values, and avoids dumping sensitive server internals.
Open SnippetBasic Form Handling with POST
Handles a basic `POST` form by checking the request method, trimming fields, validating email, and returning errors or clean data.
Open SnippetGet Last Insert ID
Inserts one mission-log row with procedural mysqli, then returns the exact auto-increment ID produced by that insert.
Open SnippetUpdate Data in MySQL
Updates one inventory row with procedural mysqli, validates the row ID, and reports whether a row actually changed.
Open SnippetDelete Data from MySQL
Deletes one confirmed row with procedural mysqli and returns a clear result without unsafe broad deletion.
Open SnippetGet Number of Affected Rows
Runs a targeted procedural mysqli update and returns the number of rows changed by that statement.
Open Snippet