Tags
#php
#kotlin
#bash
#go
#sql
#rust
#typescript
#html
#java
#python
#files
#utils
#strings
#http
#concurrency
#async
#json
#arrays
#security
#types
#crypto
#database
#dates
#format
PHP
Normalize Phone Number to E.164
A minimal E.164 normalizer for US/CA numbers — strips formatting, prepends "+1" if missing, and validates the digit count. For full international support, reach for giggsey/libphonenumber-for-php.
@admin
PHP
Send Plain Email via mail()
A thin wrapper around PHP's mail() with proper headers (From, Reply-To, Content-Type with UTF-8). For anything serious reach for PHPMailer or Symfony Mailer — this is fine for transactional one-offs.
Bash
URL-Encode and URL-Decode
Encode and decode URL-safe strings entirely in bash — no python or external tool required. Useful in pure-shell deployment scripts that need to build query strings.
Java
Text Blocks (Java 15+)
Multi-line string literals with proper indentation handling. Stop concatenating newlines by hand. The compiler removes the common leading whitespace automatically.
Bash
Run on Multiple Hosts via SSH (with progress)
Iterate a host list, run the same command on each, show colored OK/FAIL summary at the end. Useful for ad-hoc fleet operations without setting up Ansible.
HTML
Textarea with Character Counter
Combine `maxlength` (hard cap) with a small JS-driven live counter. Browsers won't let users paste past `maxlength`, so this is purely UX feedback.
Go
iter.Seq — Range-Over-Func (Go 1.23+)
Go 1.23 added "range over func" — your own functions can produce values that work with `for v := range fn`. Cleaner than channels for in-process iteration without goroutine overhead.
Kotlin
repeat, also lateinit and isInitialized
`repeat(n) { i -> ... }` for N-times loops where you don't care about index naming. `lateinit var` lets you declare a non-null var without initializing it — common for DI / framework injection.
Rust
unsafe — When and How
Most Rust is safe. `unsafe` only lets you do 5 things the compiler can't check (raw pointer deref, mutable static, unsafe fn / trait, FFI, union access). Wrap unsafe operations in safe abstractions.
Go
JSON Marshal / Unmarshal
`encoding/json` is the standard library JSON parser. `Marshal` produces compact JSON; `MarshalIndent` produces pretty-printed. `Unmarshal` decodes into a typed value (struct, map, or any).
PHP
Email Address Obfuscator
Render an email address as HTML that is human-readable but resistant to naive scraping bots. Uses entity encoding and an optional Caesar-style ROT for the mailto link.
TypeScript
Slugify (Unicode-aware)
Turn any string into a URL-safe slug. Uses Intl normalize + diacritic stripping so "Café" becomes "cafe". No external dependency.
Python
Producer / Consumer Queue (threading)
Classic producer / multi-consumer pattern using queue.Queue. Producers put work onto the queue; consumers pull and process; a sentinel value signals shutdown.
PHP
CSRF Token Generate + Verify
Per-session CSRF token helpers using hash_equals for constant-time comparison. Token is regenerated on logout but persists across requests within a session.
PHP
Secure Session Bootstrap
Start a session with all the security flags you should always set: HttpOnly, SameSite=Strict, Secure on HTTPS, custom name, and an idle-timeout regeneration.
Go
UUID Generation (google/uuid)
`github.com/google/uuid` is the standard UUID library. v4 (random) for IDs, v7 (time-ordered) when you want UUIDs that sort chronologically and play nicely with B-tree indexes.
TypeScript
Shuffle (Fisher-Yates)
Uniformly shuffle an array in place using the modern Fisher-Yates algorithm. Returns the same array for chaining. Use crypto.getRandomValues for cryptographic uses.