Darknetzz/php-rand v1.2.3 on GitHub

QR Code Generator – Generate QR codes from any text, URL, or data
Regex Tester – Test and debug regular expressions with match highlighting and capture groups
Brainfuck Converter – Convert text to Brainfuck code or execute Brainfuck programs
Security Hardening – Fixed critical code injection vulnerability in calculator
Improved IV Generation – Fixed OpenSSL IV length and format validation
Copy Button Fix – Fixed trailing whitespace issue when copying strings

📋 Detailed Changes (click to expand)

QR Code Generator (Generators menu)
- Generate QR codes with customizable size (200–500px)
- Error correction levels (L, M, Q, H)
- Download QR codes as PNG images
- Uses qr-server.com API (no dependencies required)
Regex Tester (Miscellaneous menu)
- Test regular expressions in real-time
- Display all matches with positions
- Show capture groups
- Regex replacement support (with $1, $2 for groups)
- Support for common flags (case-insensitive, multiline)
- Pattern validation with error messages
Brainfuck Converter (Convert menu)
- Text → Brainfuck: Convert any text to Brainfuck code that outputs that text
- Brainfuck → Text: Execute Brainfuck code and capture the output
- Full Brainfuck interpreter with 30,000 cell tape
- Bracket matching validation
- Safety limits to prevent infinite loops
- Statistics display (code length, compression ratio)

CRITICAL: Code Injection Fix – Replaced dangerous eval() in calculator with safe math parser
- Created safeMathEval() function using tokenization and operator precedence
- Eliminates arbitrary code execution vulnerability
- Maintains full calculator functionality
Information Disclosure Fix – Debug mode now disabled by default
- Requires DEBUG_MODE constant to enable
- Prevents exposure of sensitive $_REQUEST data
Input Validation – Added comprehensive validation to calculator function

OpenSSL IV Generation – Fixed IV length calculation and hex validation
- Removed incorrect division by 2 in IV length calculation
- Added hex format validation before conversion
- Properly converts hex IV to binary for OpenSSL functions
- Improved error messages for invalid IV formats
Cipher Selection – Fixed null cipher selection in dropdown
- Added default selected cipher (aes-256-cbc)
- Validates cipher before use to prevent errors
Random Data Generation – Fixed IV/Key random generation to use hex strings
- Context-aware detection for OpenSSL form
- Generates valid hexadecimal strings for IV and Key fields
Copy to Clipboard – Fixed trailing whitespace being copied
- Added .trim() to copyToClipboard() function
- Ensures clean text copying without extra spaces

Code Standardization – Converted all Null, True, False to lowercase
- Updated throughout codebase for consistency
- Follows PHP coding standards
Null Safety – Added null coalescing operators to prevent deprecation warnings
- Fixed htmlspecialchars() null parameter warnings
- Applied across all modules and handlers