recode
Introducción
Human Language and Character Encoding Support
PHP Manual

# Unicode

- Introducción
- Installing/Configuring
  - Requisitos
  - Instalación
  - Configuración en tiempo de ejecución
  - Tipos de recursos
- Constantes predefinidas
- Unicode Functions
  - unicode_decode — Convert a binary string into a Unicode string
  - unicode_encode — Convert a unicode string in any encoding
  - unicode_get_error_mode — Get the error mode for strings conversions
  - unicode_get_subst_char — Get the substitution character for string conversion errors
  - unicode_set_error_mode — Set the error mode for strings conversions
  - unicode_set_subst_char — Set the substitution character for string conversion errors

recode
Introducción
Human Language and Character Encoding Support
PHP Manual