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Comprobación del tipo de carácter
Introducción
Instalación/Configuración
Requerimientos
Instalación
Configuración en tiempo de ejecución
Tipos de recursos
Constantes predefinidas
Funciones de Ctype
ctype_alnum
— Chequear posibles caracteres alfanuméricos
ctype_alpha
— Chequear posibles caracteres alfabéticos
ctype_cntrl
— Chequear posibles caracteres de control
ctype_digit
— Chequear posibles caracteres numéricos
ctype_graph
— Chequear posibles caracteres imprimibles, con excepción de los espacios
ctype_lower
— Chequear posibles caracteres en minúscula
ctype_print
— Chequear posibles caracteres imprimibles
ctype_punct
— Chequear posibles caracteres imprimibles que no son ni espacios en blanco ni caracteres alfanuméricos
ctype_space
— Chequear posibles caracteres de espacio en blanco
ctype_upper
— Chequear posibles caracteres en mayúscula
ctype_xdigit
— Chequear posibles caracteres que representen un dígito hexadecimal
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