Category: PHP

Validate and normalize incoming PHP values before passing them to array_map instead of letting a string reach the array parameter.

Create a Closure for a private method inside its class scope before passing it to external callback consumers.

Read each completed cURL multi message to find its transfer result instead of relying on the multi-handle error code.

Treat PDOException codes as SQLSTATE strings and use errorInfo for the database driver code and diagnostic message.

Distinguish PHP Error and Exception objects, catch expected failures specifically, and reserve Throwable for application boundaries.

Use PHP HTML escaping flags deliberately to replace malformed UTF-8 and document-type-disallowed code points without hiding input problems.

Initialize a SimpleXML iterator before reading its key, or let foreach manage rewind, validity checks, and movement automatically.

Keep PHP finally blocks limited to cleanup so they do not replace a return value or suppress an exception already in flight.

Understand how PHP stores named arguments in a variadic array and choose named or positional calls based on whether keys matter.

Check the result of grapheme_strlen(), report ICU failures safely, and distinguish grapheme clusters from bytes and code points.