PHP 全角转半角实现代码

文章导读：在新的一年中，各位网友都进入紧张的学习或是工作阶段。网学的各位小编整理了PHP-PHP 全角转半角实现代码的相关内容供大家参考，祝大家在新的一年里工作和学习顺利！

复制代码 代码如下:
/**
* 将一个字串中含有全角的数字字符、字母、空格或''%+-()''字符转换为相应半角字符
* @access public
* @param string $str 待转换字串
* @return string $str 处理后字串
*/
function make_semiangle($str)
{
$arr = array(''０'' => ''0'', ''１'' => ''1'', ''２'' => ''2'', ''３'' => ''3'', ''４'' => ''4'',''５'' => ''5'', ''６'' => ''6'', ''７'' => ''7'', ''８'' => ''8'', ''９'' => ''9'', ''Ａ'' => ''A'', ''Ｂ'' => ''B'', ''Ｃ'' => ''C'', ''Ｄ'' => ''D'', ''Ｅ'' => ''E'',''Ｆ'' => ''F'', ''Ｇ'' => ''G'', ''Ｈ'' => ''H'', ''Ｉ'' => ''I'', ''Ｊ'' => ''J'', ''Ｋ'' => ''K'', ''Ｌ'' => ''L'', ''Ｍ'' => ''M'', ''Ｎ'' => ''N'', ''Ｏ'' => ''O'',''Ｐ'' => ''P'', ''Ｑ'' => ''Q'', ''Ｒ'' => ''R'', ''Ｓ'' => ''S'', ''Ｔ'' => ''T'',Ｕ'' => ''U'', ''Ｖ'' => ''V'', ''Ｗ'' => ''W'', ''Ｘ'' => ''X'', ''Ｙ'' => ''Y'',''Ｚ'' => ''Z'', ''ａ'' => ''a'', ''ｂ'' => ''b'', ''ｃ'' => ''c'', ''ｄ'' => ''d'',''ｅ'' => ''e'', ''ｆ'' => ''f'', ''ｇ'' => ''g'', ''ｈ'' => ''h'', ''ｉ'' => ''i'',''ｊ'' => ''j'', ''ｋ'' => ''k'', ''ｌ'' => ''l'', ''ｍ'' => ''m'', ''ｎ'' => ''n'',''ｏ'' => ''o'', ''ｐ'' => ''p'', ''ｑ'' => ''q'', ''ｒ'' => ''r'', ''ｓ'' => ''s'', ''ｔ'' => ''t'', ''ｕ'' => ''u'', ''ｖ'' => ''v'', ''ｗ'' => ''w'', ''ｘ'' => ''x'', ''ｙ'' => ''y'', ''ｚ'' => ''z'',''（'' => ''('', ''）'' => '')'', ''〔'' => ''['', ''〕'' => '']'', ''【'' => ''['',''】'' => '']'', ''〖'' => ''['', ''〗'' => '']'', ''“'' => ''['', ''”'' => '']'',''‘'' => ''['', '''''' => '']'', ''｛'' => ''{'', ''｝'' => ''}'', ''《'' => ''<'',''》'' => ''>'',''％'' => ''%'', ''＋'' => ''+'', ''—'' => ''-'', ''－'' => ''-'', ''～'' => ''-'',''：'' => '':'', ''。'' => ''.'', ''、'' => '','', ''，'' => ''.'', ''、'' => ''.'', ''；'' => '','', ''？'' => ''?'', ''！'' => ''!'', ''…'' => ''-'', ''‖'' => ''|'', ''”'' => ''"'', '''''' => ''`'', ''‘'' => ''`'', ''｜'' => ''|'', ''〃'' => ''"'',''　'' => '' '');
return strtr($str, $arr);
}


复制代码 代码如下:
<?php
$str = "０１２３ＡＢＣＤＦＷＳ＼＂，．？＜＞｛｝［］＊＆＾％＃＠！～（）＋－｜：；";
echo "$str";
echo "<br />";
$str = preg_replace(''/\xa3([\xa1-\xfe])/e'', ''chr(ord(\1)-0x80)'', $str);
echo $str;
?>