phpstudy所有软件,已经通过360安全检测认证,phpstudy linux web面板(docker),已发布安全检测与修复

ctype_alpha

ctype_alpha

(PHP 4 >= 4.0.4, PHP 5)

ctype_alphaCheck for alphabetic character(s)

说明

bool ctype_alpha ( string $text )

Checks if all of the characters in the provided string, text, are alphabetic. In the standard C locale letters are just [A-Za-z] and ctype_alpha() is equivalent to (ctype_upper($text) || ctype_lower($text)) if $text is just a single character, but other languages have letters that are considered neither upper nor lower case.

参数

text

The tested string.

返回值

Returns TRUE if every character in text is a letter from the current locale, FALSE otherwise.

范例

Example #1 A ctype_alpha() example (using the default locale)

<?php
$strings 
= array('KjgWZC''arf12');
foreach (
$strings as $testcase) {
    if (
ctype_alpha($testcase)) {
        echo 
"The string $testcase consists of all letters. ";
    } else {
        echo 
"The string $testcase does not consist of all letters. ";
    }
}
?>

以上例程会输出:

The string KjgWZC consists of all letters.
The string arf12 does not consist of all letters.

注释

Note:

If an integer between -128 and 255 inclusive is provided, it is interpreted as the ASCII value of a single character (negative values have 256 added in order to allow characters in the Extended ASCII range). Any other integer is interpreted as a string containing the decimal digits of the integer.

参见


  • ctype_alnum
  • ctype_alpha
  • ctype_cntrl
  • ctype_digit
  • ctype_graph
  • ctype_lower
  • ctype_print
  • ctype_punct
  • ctype_space
  • ctype_upper
  • ctype_xdigit
  • PHP MySQL HTML CSS JavaScript MSSQL AJAX .NET JSP Linux Mac ASP 服务器 SQL jQuery C# C++ java Android IOS oracle MongoDB SQLite wamp 交通频道

    无数据提示还没有评论,楼主喊你快去抢前排~~~我要评论
    微信扫码登陆

    打开 微信
    扫一扫登录