PHP 手册
后退 |  | 前进

# ctype_punct

(PHP 4 >= 4.0.4, PHP 5)

ctype_punct -- Check for any printable character which is not whitespace or an alphanumeric character

## 说明

bool ctype_punct ( string text )

Checks if all of the characters in the provided string, text, are punctuation character.

## 参数

text

  The tested string.

## 返回值

Returns `TRUE` if every character in text is printable, but neither letter, digit or blank, `FALSE` otherwise.

## 范例

例子 1. A ctype_punct() example

`<?php $strings = array('ABasdk!@!$#', '!@ # $', '*&$()'); foreach ($strings as $testcase) { if (ctype_punct($testcase)) { echo "The string $testcase consists of all punctuation.\n"; } else { echo "The string $testcase does not consist of all punctuation.\n"; } } ?>`

上例将输出：

    The string ABasdk!@!$# does not consist of all punctuation.
    The string !@ # $ does not consist of all punctuation.
    The string *&$() consists of all punctuation.

## 参见

ctype_cntrl()
ctype_graph()

后退 | 起点 | 前进
ctype_print | 上一级 | ctype_space