Tag: advanced
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FFI — Foreign Function Interface (PHP 7.4) PHP 7.4+
PHP 7.4 FFI allows calling C functions and accessing C data structures directly from PHP — enabling Python-like ctypes integration for native libraries without writing C extensions.
2mo ago
php advanced
infer Keyword in Conditional Types 2.8
The infer keyword inside conditional types lets TypeScript extract and name a type from within a generic structure — enabling ReturnType<T>, Awaited<T>, and custom type extraction.
2mo ago
typescript advanced
Lock-Free Programming
Lock-free algorithms guarantee system-wide progress without mutexes — using atomic CPU instructions (CAS) so at least one thread always makes forward progress even if others are delayed.
2mo ago
concurrency advanced
Memory Barriers & Visibility
Memory barriers (fences) force the CPU and compiler to complete memory operations in order — ensuring changes made by one thread are visible to others at the right time.
2mo ago
concurrency advanced
Socket Programming with PHP PHP 5.0+
PHP supports raw socket programming via the Sockets extension (socket_create) and stream sockets (stream_socket_client) — used for custom protocols, WebSocket servers, and network tools.
2mo ago
php advanced
Template Literal Types 4.1
TypeScript template literal types combine string literals with type interpolation — type EventName = `on${Capitalize<string>}` — enabling precise string-pattern type constraints.
2mo ago
typescript advanced
Conditional Types & infer 2.8
Types that choose between two types based on a condition — T extends U ? X : Y — enabling type-level branching. The infer keyword extracts types from within a conditional.
2mo ago
typescript advanced
Mapped Types & Template Literal Types 2.1
Mapped types transform existing types by iterating over their keys. Template literal types create string union types from combinations — together they enable powerful type-level transformations.
2mo ago
typescript advanced
Symbol & the Iterator Protocol ES2015
Symbol.iterator makes objects iterable with for...of — implementing the iterator protocol enables custom data structures to participate in all iteration contexts.
2mo ago
javascript advanced
HTTP Request Smuggling
Desynchronising front-end and back-end HTTP parsing via conflicting Content-Length and Transfer-Encoding headers to poison request queues.
CWE-444 OWASP A5:2021
2mo ago
security advanced
9.8
Lookahead & Lookbehind
Zero-width assertions that match a position based on what precedes or follows — without consuming characters, enabling context-sensitive matching.
2mo ago
regex advanced
PHP FFI PHP 7.4+
Foreign Function Interface — allows PHP to call C library functions and use C data structures directly, enabling integration with native libraries without writing a PHP extension.
2mo ago
php advanced
PHP Stream Wrappers PHP 5.0+
PHP's I/O abstraction layer — built-in wrappers like file://, php://, phar://, and http:// let file functions operate over any protocol.
2mo ago
php advanced
Reflection API PHP 5.0+
PHP's built-in introspection system for examining classes, methods, properties, and parameters at runtime.
2mo ago
php advanced
Side-Channel Attack
Information is leaked through observable characteristics of a system — timing, power consumption, or cache behaviour — rather than via direct data access.
CWE-208 OWASP A2:2021
2mo ago
security advanced
5.9
Weak References (WeakReference, WeakMap) PHP 7.4+
References to objects that don't prevent garbage collection — useful for caches and observer registries that shouldn't extend object lifetimes.
2mo ago
php advanced