<?php
/*
*
* @class Base_Char
* @author zhangys
* @date 2012/06/25
*/
class Base_Var_Char
{
public static function isUpper ( $char )
{
$ascii = ord ( $char );
if( $ascii > 64 and $ascii < 91 ) return true;
return false;
}
public static function isLower ( $char )
{
$ascii = ord ( $char );
if( $ascii > 96 and $ascii < 123 ) return true;
return false;
}
public static function toUpper ( $char )
{
if ( self::isUpper ( $char ) ) return $char;
$ascii = ord ( $char );
return chr ( $ascii - 32 );
}
public static function toLower ( $char )
{
if ( self::isLower ( $char ) ) return $char;
$ascii = ord ( $char );
return chr ( $ascii + 32 );
}
}
Statement:The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn