ctype函数_PHP ctype_print（）函数与示例

￡神魔★判官ぃ 2023-03-05 15:50 3阅读 0赞

ctype函数

## PHP ctype\_print()函数 **(**PHP ctype\_print() function**)** ##

**ctype\_print() function** is a character type (CType) function in PHP, it is used to check whether a given string contains all printable characters or not.

**ctype\_print()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所有可打印字符。

It returns true, if all characters of the given strings are printable. Else it returns false.

如果给定字符串的所有字符均可打印，则返回true 。 否则返回false 。

**Printable characters** are the characters that can be printed on the screen. The all alphabets, digits, whitespace and special characters are the printable characters.

**可打印字符**是可以在屏幕上**打印的字符** 。 所有字母，数字，空格和特殊字符均为可打印字符。

**Syntax:**

**句法：**

ctype_print(string) : bool

**Example:**

**例：**

Input: "Hello 123"
        Output: true
        Input: "I am [email protected]#!~*.()"
        Output: true
        Input: "Hello\r\nWorld"
        Output: false
        Input: "Hello\x41"
        Output: true

**PHP code:**

**PHP代码：**

<?php
        $str = "Hello 123";
        if(ctype_print($str))
            echo ("$str contains all printable characters.\n");
        else
            echo ("$str does not contain all printable characters.\n");
    
        $str = "I am [email protected]#!~*.()";
        if(ctype_print($str))
            echo ("$str contains all printable characters.\n");
        else
            echo ("$str does not contain all printable characters.\n");
    
        $str = "Hello\r\nWorld"; //"\r" and "\n" are not printable characters
        if(ctype_print($str))
            echo ("$str contains all printable characters.\n");
        else
            echo ("$str does not contain all printable characters.\n");
    
        $str = "Hello\x41"; //"\x41" is the ASCII value of "A"
        if(ctype_print($str))
            echo ("$str contains all printable characters.\n");
        else
            echo ("$str does not contain all printable characters.\n");	
    ?>

**Output**

**输出量**

Hello 123 contains all printable characters.
    I am [email protected]#!~*.() contains all printable characters.
    Hello
    World does not contain all printable characters.
    HelloA contains all printable characters.

> 翻译自: [https://www.includehelp.com/php/ctype\_print-function-with-example.aspx][https_www.includehelp.com_php_ctype_print-function-with-example.aspx]

ctype函数

[https_www.includehelp.com_php_ctype_print-function-with-example.aspx]: https://www.includehelp.com/php/ctype_print-function-with-example.aspx