Beginner terms
Fetch API
ES2015
The browser-native Promise-based API for making HTTP requests — replacing XMLHttpRequest with a cleaner interface supporting streaming, CORS, and request/response objects.
2mo ago
javascript beginner
File Permissions
PHP 4.0+
1
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.
3mo 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.
3mo 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.
3mo 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.
3mo ago
style beginner
Facade Pattern
PHP 5.0+
Provides a simplified, unified interface to a complex subsystem, hiding its internal complexity from clients.
3mo ago
quality beginner
Fail Fast Principle
Detect and report errors at the earliest possible point rather than allowing invalid state to propagate and cause confusing failures elsewhere.
3mo ago
quality beginner
Feature Flag / Feature Toggle
PHP 5.0+
A runtime switch that enables or disables features without deploying new code, decoupling deployment from release.
3mo ago
quality beginner
Fetch API & HTTP Requests
ES2015 The modern browser API for HTTP requests — Promise-based, streaming-capable, and replacing XMLHttpRequest in all new code.
3mo ago
javascript beginner
filter_var()
PHP 5.2+
PHP's built-in input validation and sanitisation function supporting email, URL, IP, int, and float validators.
3mo 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.
3mo 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
3mo ago
security beginner
7.5
Functional Array Methods (JS)
ES2015 map, filter, reduce, find, flatMap, every, some — JavaScript's built-in higher-order array methods for expressive data transformation.
3mo ago
javascript beginner