php全角转半角

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);

}

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