Installation
Beginning with PHP 4.2.0 these functions are enabled by default. For older versions you have to configure and compile PHP with --enable-ctype . You can disable ctype support with --disable-ctype .
The Windows version of PHP has built-in support for this extension. You do not need to load any additional extensions in order to use these functions.
Note: Builtin support for ctype is available with PHP 4.3.0.
Коментарии
On FreeBSD, this library is NOT included automatically. It must be manually installed. This can be done with the following command:
pkg install php70-ctype