classkit_method_rename
简介
变量与类型相关扩展
PHP 手册
Character type checking
简介
安装/配置
需求
安装
运行时配置
资源类型
预定义常量
Ctype 函数
ctype_alnum
— Check for alphanumeric character(s)
ctype_alpha
— Check for alphabetic character(s)
ctype_cntrl
— Check for control character(s)
ctype_digit
— Check for numeric character(s)
ctype_graph
— Check for any printable character(s) except space
ctype_lower
— Check for lowercase character(s)
ctype_print
— Check for printable character(s)
ctype_punct
— Check for any printable character which is not whitespace or an alphanumeric character
ctype_space
— Check for whitespace character(s)
ctype_upper
— Check for uppercase character(s)
ctype_xdigit
— Check for character(s) representing a hexadecimal digit
classkit_method_rename
简介
变量与类型相关扩展
PHP 手册