Beginner terms
Fetch API
ES2015
2
The browser-native Promise-based API for making HTTP requests — replacing XMLHttpRequest with a cleaner interface supporting streaming, CORS, and request/response objects.
6mo ago
JavaScript beginner
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.
6mo ago
PHP beginner
Four Golden Signals
Google SRE's Four Golden Signals — Latency, Traffic, Errors, Saturation — are the four metrics that, if monitored and alerted on, cover most production reliability concerns.
6mo ago
Observability beginner
Fatal Errors vs Errors vs Warnings
PHP 5.0+
3
PHP has three error levels that behave very differently: fatal errors halt execution, warnings continue but signal problems, and notices are advisory only.
6mo ago
PHP beginner
Function & Method Naming Convention
PHP functions and methods use camelCase per PSR-1 — lowercase first word, each subsequent word capitalised, verb-noun pairs for actions.
6mo ago
Style beginner
Facade Pattern
PHP 5.0+
Provides a simplified, unified interface to a complex subsystem, hiding its internal complexity from clients.
6mo ago
Code Quality beginner
Fail Fast Principle
1
Detect and report errors at the earliest possible point rather than allowing invalid state to propagate and cause confusing failures elsewhere.
6mo ago
Code Quality beginner
Feature Flag / Feature Toggle
PHP 5.0+
1
A runtime switch that enables or disables features without deploying new code, decoupling deployment from release.
6mo ago
Code Quality beginner
Fetch API & HTTP Requests
ES2015
11
The modern browser API for HTTP requests — Promise-based, streaming-capable, and replacing XMLHttpRequest in all new code.
6mo ago
JavaScript beginner
filter_var()
PHP 5.2+
2
PHP's built-in input validation and sanitisation function supporting email, URL, IP, int, and float validators.
6mo ago
PHP beginner
Fluent Naming for Boolean Methods
1
Prefix boolean-returning methods with is, has, can, should, or was so conditionals read as natural English sentences.
6mo ago
Style beginner
Forced Browsing
PHP 5.0+
Accessing resources at predictable URLs that are not linked from the application's UI but lack proper authorisation checks.
CWE-425 OWASP A1:2021
6mo ago
Security beginner
7.5
Functional Array Methods (JS)
ES2015
2
map, filter, reduce, find, flatMap, every, some — JavaScript's built-in higher-order array methods for expressive data transformation.
6mo ago
JavaScript beginner