Php terms
The engine behind the web's most-used server-side language
PHP powers an enormous portion of the web — from WordPress and Laravel to custom e-commerce platforms. This category covers the language internals, core functions, OOP features, type system, performance patterns, and PHP-specific quirks that every serious PHP developer should understand deeply. Whether you are writing procedural scripts or building full-stack applications with modern PHP 8.x features, these terms form the foundation.
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
Fibers — Cooperative Concurrency (PHP 8.1) PHP 8.1+
PHP 8.1 Fibers enable cooperative multitasking — suspending execution at yield points and resuming later — the foundation for async PHP frameworks without OS threads.
2mo ago
php advanced
File Permissions PHP 4.0+
Unix permission bits (owner/group/world read-write-execute) that control which processes can read, write, or execute files — misconfigured permissions are a common PHP deployment and security issue.
2mo ago
php beginner
Fatal Errors vs Errors vs Warnings PHP 5.0+
PHP has three error levels that behave very differently: fatal errors halt execution, warnings continue but signal problems, and notices are advisory only.
2mo ago
php beginner
Fiber-Based Task Scheduler PHP 8.1+
Building a cooperative multitasking scheduler with PHP Fibers — suspending and resuming tasks at I/O wait points to run multiple tasks concurrently in a single thread.
2mo ago
php advanced
Fibers (PHP 8.1) PHP 8.1+ Fibers provide cooperative concurrency primitives — lightweight coroutines that can pause and resume execution within a single thread.
2mo ago
php advanced
Fibers in Practice (Revolt / Amp) PHP 8.1+
Using PHP 8.1 Fibers with event-loop libraries like Revolt or Amp to write non-blocking concurrent code in a synchronous, readable style.
2mo ago
php advanced
filter_var() PHP 5.2+
PHP's built-in input validation and sanitisation function supporting email, URL, IP, int, and float validators.
2mo ago
php beginner
First Class Callable Syntax (PHP 8.1) PHP 8.1+
Creates a Closure from any callable using func(...) syntax, replacing the verbose Closure::fromCallable() boilerplate.
2mo ago
php intermediate
First-Class Callable Syntax (PHP 8.1) PHP 8.1+
PHP 8.1's Closure::fromCallable() shorthand — strlen(...) creates a Closure from any callable without verbose wrapper syntax.
2mo ago
php intermediate
Fluent Interface / Method Chaining PHP 5.0+
An API design style where methods return $this, enabling readable chains of calls that resemble natural language.
2mo ago
php intermediate