tohokuaiki https://blog.hatena.ne.jp/tohokuaiki/ tohokuaikiのチラシの裏 https://tohokuaiki.hateblo.jp/ php PHPのPCRE系の正規表現において、 複雑な正規表現 ＞＞＞＞ シンプルな正規表現 みたいで、もし複雑な正規表現にするか、単純にforeachで回した方がいいか迷ったらforeachの方がいいかもしれない。 <?php $start = explode(" ", microtime()); $str = array("AB","BC","CD","DE","EF","FG","GH","HI","IJ","JK","KL", "LM","MN","NO","OP","PQ","QR","RS","ST","TU","UV", "VW","WX","XY","YZ","ZA", "ab","b… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftohokuaiki.hateblo.jp%2Fentry%2F20081114%2F1226644323" title="正規表現は重い - tohokuaikiのチラシの裏" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2008-11-14 15:32:03 rich https://tohokuaiki.hateblo.jp/entry/20081114/1226644323 1.0 100%