【2021/10/15 追記】
この記事は更新が停止されています。現在の電話番号形式にすべて対応している保証はありませんので，過去の記事として参考程度にご覧ください。
Rubyですでに実践されているコードがあったのでそちらを参考にさせていただきつつ少々工夫してみました。
http://qiita.com/kennyj@github/items/dde3880abb5071f649ab
https://gist.github.com/kennyj/4966002
使い方
echo format_phone_number('0120828828'); // 0120-828-828
既にハイフンで誤って区切られていた場合も正しく修正されます。
一覧の中から見つからなかったときはそのまま $input を返します。
第2引数の $strict で携帯電話等の番号の区切り方が変わります。
$strict がFALSE(デフォルト)のとき
見慣れた慣用的な区切りになります。
090 - XXXX - YYYY
080 - XXXX - YYYY
070 - XXXX - YYYY
020 - XXXX - YYYY
$strict がTRUEのとき
総務省の資料に厳格に従います。
090 - XXX - YYYYY
080 - XXX - YYYYY
070 - XXX - YYYYY
020 - XXX - YYYYY
関数定義
function format_phone_number($input, $strict = false) {
$groups = array(
5 =>
array (
'01564' => 1,
'01558' => 1,
'01586' => 1,
'01587' => 1,
'01634' => 1,
'01632' => 1,
'01547' => 1,
'05769' => 1,
'04992' => 1,
'04994' => 1,
'01456' => 1,
'01457' => 1,
'01466' => 1,
'01635' => 1,
'09496' => 1,
'08477' => 1,
'08512' => 1,
'08396' => 1,
'08388' => 1,
'08387' => 1,
'08514' => 1,
'07468' => 1,
'01655' => 1,
'01648' => 1,
'01656' => 1,
'01658' => 1,
'05979' => 1,
'04996' => 1,
'01654' => 1,
'01372' => 1,
'01374' => 1,
'09969' => 1,
'09802' => 1,
'09912' => 1,
'09913' => 1,
'01398' => 1,
'01377' => 1,
'01267' => 1,
'04998' => 1,
'01397' => 1,
'01392' => 1,
),
4 =>
array (
'0768' => 2,
'0770' => 2,
'0772' => 2,
'0774' => 2,
'0773' => 2,
'0767' => 2,
'0771' => 2,
'0765' => 2,
'0748' => 2,
'0747' => 2,
'0746' => 2,
'0826' => 2,
'0749' => 2,
'0776' => 2,
'0763' => 2,
'0761' => 2,
'0766' => 2,
'0778' => 2,
'0824' => 2,
'0797' => 2,
'0796' => 2,
'0555' => 2,
'0823' => 2,
'0798' => 2,
'0554' => 2,
'0820' => 2,
'0795' => 2,
'0556' => 2,
'0791' => 2,
'0790' => 2,
'0779' => 2,
'0558' => 2,
'0745' => 2,
'0794' => 2,
'0557' => 2,
'0799' => 2,
'0738' => 2,
'0567' => 2,
'0568' => 2,
'0585' => 2,
'0586' => 2,
'0566' => 2,
'0564' => 2,
'0565' => 2,
'0587' => 2,
'0584' => 2,
'0581' => 2,
'0572' => 2,
'0574' => 2,
'0573' => 2,
'0575' => 2,
'0576' => 2,
'0578' => 2,
'0577' => 2,
'0569' => 2,
'0594' => 2,
'0827' => 2,
'0736' => 2,
'0735' => 2,
'0725' => 2,
'0737' => 2,
'0739' => 2,
'0743' => 2,
'0742' => 2,
'0740' => 2,
'0721' => 2,
'0599' => 2,
'0561' => 2,
'0562' => 2,
'0563' => 2,
'0595' => 2,
'0596' => 2,
'0598' => 2,
'0597' => 2,
'0744' => 2,
'0852' => 2,
'0956' => 2,
'0955' => 2,
'0954' => 2,
'0952' => 2,
'0957' => 2,
'0959' => 2,
'0966' => 2,
'0965' => 2,
'0964' => 2,
'0950' => 2,
'0949' => 2,
'0942' => 2,
'0940' => 2,
'0930' => 2,
'0943' => 2,
'0944' => 2,
'0948' => 2,
'0947' => 2,
'0946' => 2,
'0967' => 2,
'0968' => 2,
'0987' => 2,
'0986' => 2,
'0985' => 2,
'0984' => 2,
'0993' => 2,
'0994' => 2,
'0997' => 2,
'0996' => 2,
'0995' => 2,
'0983' => 2,
'0982' => 2,
'0973' => 2,
'0972' => 2,
'0969' => 2,
'0974' => 2,
'0977' => 2,
'0980' => 2,
'0979' => 2,
'0978' => 2,
'0920' => 2,
'0898' => 2,
'0855' => 2,
'0854' => 2,
'0853' => 2,
'0553' => 2,
'0856' => 2,
'0857' => 2,
'0863' => 2,
'0859' => 2,
'0858' => 2,
'0848' => 2,
'0847' => 2,
'0835' => 2,
'0834' => 2,
'0833' => 2,
'0836' => 2,
'0837' => 2,
'0846' => 2,
'0845' => 2,
'0838' => 2,
'0865' => 2,
'0866' => 2,
'0892' => 2,
'0889' => 2,
'0887' => 2,
'0893' => 2,
'0894' => 2,
'0897' => 2,
'0896' => 2,
'0895' => 2,
'0885' => 2,
'0884' => 2,
'0869' => 2,
'0868' => 2,
'0867' => 2,
'0875' => 2,
'0877' => 2,
'0883' => 2,
'0880' => 2,
'0879' => 2,
'0829' => 2,
'0550' => 2,
'0228' => 2,
'0226' => 2,
'0225' => 2,
'0224' => 2,
'0229' => 2,
'0233' => 2,
'0237' => 2,
'0235' => 2,
'0234' => 2,
'0223' => 2,
'0220' => 2,
'0192' => 2,
'0191' => 2,
'0187' => 2,
'0193' => 2,
'0194' => 2,
'0198' => 2,
'0197' => 2,
'0195' => 2,
'0238' => 2,
'0240' => 2,
'0260' => 2,
'0259' => 2,
'0258' => 2,
'0257' => 2,
'0261' => 2,
'0263' => 2,
'0266' => 2,
'0265' => 2,
'0264' => 2,
'0256' => 2,
'0255' => 2,
'0243' => 2,
'0242' => 2,
'0241' => 2,
'0244' => 2,
'0246' => 2,
'0254' => 2,
'0248' => 2,
'0247' => 2,
'0186' => 2,
'0185' => 2,
'0144' => 2,
'0143' => 2,
'0142' => 2,
'0139' => 2,
'0145' => 2,
'0146' => 2,
'0154' => 2,
'0153' => 2,
'0152' => 2,
'0138' => 2,
'0137' => 2,
'0125' => 2,
'0124' => 2,
'0123' => 2,
'0126' => 2,
'0133' => 2,
'0136' => 2,
'0135' => 2,
'0134' => 2,
'0155' => 2,
'0156' => 2,
'0176' => 2,
'0175' => 2,
'0174' => 2,
'0178' => 2,
'0179' => 2,
'0184' => 2,
'0183' => 2,
'0182' => 2,
'0173' => 2,
'0172' => 2,
'0162' => 2,
'0158' => 2,
'0157' => 2,
'0163' => 2,
'0164' => 2,
'0167' => 2,
'0166' => 2,
'0165' => 2,
'0267' => 2,
'0250' => 2,
'0533' => 2,
'0422' => 2,
'0532' => 2,
'0531' => 2,
'0436' => 2,
'0428' => 2,
'0536' => 2,
'0299' => 2,
'0294' => 2,
'0293' => 2,
'0475' => 2,
'0295' => 2,
'0297' => 2,
'0296' => 2,
'0495' => 2,
'0438' => 2,
'0466' => 2,
'0465' => 2,
'0467' => 2,
'0478' => 2,
'0476' => 2,
'0470' => 2,
'0463' => 2,
'0479' => 2,
'0493' => 2,
'0494' => 2,
'0439' => 2,
'0268' => 2,
'0480' => 2,
'0460' => 2,
'0538' => 2,
'0537' => 2,
'0539' => 2,
'0279' => 2,
'0548' => 2,
'0280' => 2,
'0282' => 2,
'0278' => 2,
'0277' => 2,
'0269' => 2,
'0270' => 2,
'0274' => 2,
'0276' => 2,
'0283' => 2,
'0551' => 2,
'0289' => 2,
'0287' => 2,
'0547' => 2,
'0288' => 2,
'0544' => 2,
'0545' => 2,
'0284' => 2,
'0291' => 2,
'0285' => 2,
'0120' => 3,
'0570' => 3,
'0800' => 3,
'0990' => 3,
),
3 =>
array (
'099' => 3,
'054' => 3,
'058' => 3,
'098' => 3,
'095' => 3,
'097' => 3,
'052' => 3,
'053' => 3,
'011' => 3,
'096' => 3,
'049' => 3,
'015' => 3,
'048' => 3,
'072' => 3,
'084' => 3,
'028' => 3,
'024' => 3,
'076' => 3,
'023' => 3,
'047' => 3,
'029' => 3,
'075' => 3,
'025' => 3,
'055' => 3,
'026' => 3,
'079' => 3,
'082' => 3,
'027' => 3,
'078' => 3,
'077' => 3,
'083' => 3,
'022' => 3,
'086' => 3,
'089' => 3,
'045' => 3,
'044' => 3,
'092' => 3,
'046' => 3,
'017' => 3,
'093' => 3,
'059' => 3,
'073' => 3,
'019' => 3,
'087' => 3,
'042' => 3,
'018' => 3,
'043' => 3,
'088' => 3,
'050' => 4,
),
2 =>
array (
'04' => 4,
'03' => 4,
'06' => 4,
),
);
$groups[3] +=
$strict ?
array(
'020' => 3,
'070' => 3,
'080' => 3,
'090' => 3,
) :
array(
'020' => 4,
'070' => 4,
'080' => 4,
'090' => 4,
)
;
$number = preg_replace('/[^\d]++/', '', $input);
foreach ($groups as $len => $group) {
$area = substr($number, 0, $len);
if (isset($group[$area])) {
$formatted = implode('-', array(
$area,
substr($number, $len, $group[$area]),
substr($number, $len + $group[$area])
));
return strrchr($formatted, '-') !== '-' ? $formatted : $input;
}
}
$pattern = '/\A(00(?:[013-8]|2\d|91[02-9])\d)(\d++)\z/';
if (preg_match($pattern, $number, $matches)) {
return $matches[1] . '-' . $matches[2];
}
return $input;
}