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
HTML
Newsletter Signup Form
A focused inline form: just an email + submit. Use `type="email"`, `autocomplete="email"`, `inputmode="email"` for the best mobile UX. Include an inline status/confirmation slot.
@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.
PHP
Validate Email (RFC-aware)
Use PHP's built-in FILTER_VALIDATE_EMAIL with the FILTER_FLAG_EMAIL_UNICODE flag for IDN domains, plus a length sanity check. Trust this over hand-rolled regex.
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.
JavaScript
Validate Email Address
Validates an email address using a battle-tested regex that covers the vast majority of real-world addresses without being overly strict. For server-side code, pair this with a confirmation email step — client-side regex alone is not a security measure. Returns a boolean for easy conditional use.