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ctype函数

PHP ctype_space()函数 (PHP ctype_space() function)

ctype_space() function is a character type (CType) function in PHP, it is used to check whether a given string contains whitespace or not.

ctype_space()函数是PHP中的字符类型(CType)函数，用于检查给定的字符串是否包含空格。

Note: Whitespace contains some of the other things like "tabs" (horizontal, vertical), "line feed", "carriage return", and "form feed".

注意：空格包含其他一些内容，例如“制表符”(水平，垂直)，“换行符”，“回车”和“换页符”。

It returns true – if the string contains whitespaces, else it returns false.

它返回true –如果字符串包含空格，则返回false 。

Syntax:

句法：

ctype_space(string) : bool

Example:

例：

Input: "rn" Output: true Input: " " Output: true Input: "Hello world" Output: false

PHP code:

PHP代码：

<?php $str = " "; if(ctype_space($str)) echo ("$str contains whitespaces.n"); else echo ("$str does not contain whitespaces.n"); $str = "rn"; if(ctype_space($str)) echo ("$str contains whitespaces.n"); else echo ("$str does not contain whitespaces.n"); $str = "Hello world123"; if(ctype_space($str)) echo ("$str contains whitespaces.n"); else echo ("$str does not contain whitespaces.n"); $str = "[email protected]&a"; if(ctype_space($str)) echo ("$str contains whitespaces.n"); else echo ("$str does not contain whitespaces.n");?>

Output

输出量

contains whitespaces. contains whitespaces.Hello world123 does not contain whitespaces.[email protected]&a does not contain whitespaces.

翻译自: https://www.includehelp.com/php/ctype_space-function-with-example.aspx

ctype函数