function smartEncodingDetect(string $string, array $priorities = ['UTF-8', 'ISO-8859-1', 'Windows-1252']) foreach ($priorities as $encoding) // For UTF-8, validate it strictly if ($encoding === 'UTF-8' && mb_check_encoding($string, 'UTF-8')) return 'UTF-8'; // For others, attempt detection if (mb_detect_encoding($string, $encoding, true) === $encoding) return $encoding; return 'UTF-8'; // safe fallback
PHP gives us tools to handle this, but they aren't magic. Let’s look at how to reliably detect encoding—and when you shouldn't rely on detection at all. PHP’s Multibyte String extension (mbstring) provides mb_detect_encoding() . It scans a string and tries to guess the character set. detect encoding php
The root cause?
We’ve all been there. You import a CSV from a client, scrape a legacy website, or process an old text file, and suddenly your output looks like é instead of é . Garbage characters. Mojibake. It scans a string and tries to guess the character set