{"id":1480,"date":"2014-04-17T20:53:46","date_gmt":"2014-04-17T11:53:46","guid":{"rendered":"http:\/\/uda2.com\/blog\/?p=1480"},"modified":"2014-04-17T20:53:46","modified_gmt":"2014-04-17T11:53:46","slug":"phpstrspeed","status":"publish","type":"post","link":"https:\/\/uda2.com\/blog\/phpstrspeed\/","title":{"rendered":"\u25cb\u25cb\u3067\u59cb\u307e\u308b\u6587\u5b57\u5217\u691c\u7d22\u306e\u901f\u5ea6\u6bd4\u8f03"},"content":{"rendered":"<p>PHP\u306b\u3066\u300c\u25cb\u25cb\u3067\u59cb\u307e\u308b\u6587\u5b57\u5217\u300d\u3092\u691c\u7d22\u3059\u308b\u5834\u5408\u3001\u4e00\u756a\u306b\u601d\u3044\u3064\u304f\u306e\u306f\u6b63\u898f\u8868\u73fe\u3060\u3051\u3069\u91cd\u3044\u306e\u3067strpos\u3067\u691c\u7d22\u3057\u3066\u3044\u305f\u304cstrpos\u306f\u691c\u7d22\u4f4d\u7f6e\u3092\u8fd4\u3059\u3057\u5168\u4f53\u3092\u691c\u7d22\u3059\u308b\u306e\u3067\u306a\u3093\u3068\u306a\u304f\u9045\u3044\u304b\u306a\u3068\u601d\u3044\u5225\u306e\u65b9\u6cd5\u3092\u6a21\u7d22\u3057\u3066\u307f\u305f\u3002<\/p>\n<p><a href=\"http:\/\/selfkleptomaniac.org\/archives\/45\" target=\"_blank\">PHP\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584(3) | Selfkleptomaniac<\/a><br \/>\n\u3068\u3044\u3046\u8a18\u4e8b\u306bstrncmp\u3092\u542b\u3093\u30603\u3064\u306e\u65b9\u6cd5\u304c\u66f8\u304b\u308c\u3066\u3044\u305f\u306e\u3067\u8a085\u3064\u306e\u65b9\u6cd5\u306e\u30d9\u30f3\u30c1\u3092\u53d6\u3063\u3066\u6bd4\u8f03\u3057\u3066\u307f\u305f\u3002<br \/>\n\uff08\u5404\u79d2\u6570\u306f\u7d048\u4e07\u884c\u3092\u691c\u7d22\u3057\u305f\u3057\u305f\u30d9\u30f3\u30c1\u306e10\u56de\u5206\u306e\u5e73\u5747\u5024\u3002\uff09<\/p>\n<p>strncmp\u7248\uff08\u5148\u982d\u304b\u3089\u7279\u5b9a\u6587\u5b57\u6570\u5206\u691c\u7d22\u3059\u308b\u95a2\u6570\uff09<br \/>\nif (!strncmp($myvalue, $searchstr, 5)) \uff5e<br \/>\n0.0312 sec<\/p>\n<p>substr\u7248\uff08\u6587\u5b57\u5217\u3092\u90e8\u5206\u62bd\u51fa\u3059\u308b\u95a2\u6570\uff09<br \/>\nif (substr($myvalue, 0, 5) == $searchstr) \uff5e<br \/>\n0.0447 sec<\/p>\n<p>preg_match\u7248\uff08\u6b63\u898f\u8868\u73fe\u3092\u5229\u7528\u3057\u305f\u691c\u7d22\uff09<br \/>\nif (preg_match(&#8216;!^&#8217;.$searchstr.&#8217;!&#8217;, $myvalue)) \uff5e<br \/>\n0.0578 sec <\/p>\n<p>substr_compare\u7248\uff08\u7279\u5b9a\u90e8\u5206\u304b\u3089\u7279\u5b9a\u6587\u5b57\u6570\u5206\u691c\u7d22\u3059\u308b\u95a2\u6570\uff09<br \/>\nif (substr_compare($myvalue, $searchstr, 0, 5) == 0) \uff5e<br \/>\n0.0415 sec <\/p>\n<p>strpos\u7248\uff08\u6587\u5b57\u5217\u306e\u958b\u59cb\u4f4d\u7f6e\u3092\u691c\u7d22\u3059\u308b\u95a2\u6570\uff09<br \/>\nif (strpos($myvalue, $searchstr) === 0) \uff5e<br \/>\n0.0297 sec <\/p>\n<p>\u304a\u3063\u3057\u3083\u308b\u901a\u308a\u300cstrncmp\u300d\u306f\u901f\u304f\u300cpreg_match\u300d\u306f\u9045\u3044\u304c\u300cstrpos\u300d\u304c\u4e88\u60f3\u4ee5\u4e0a\u306b\u901f\u304f\u3001<a href=\"http:\/\/uda2.com\/blog\/2007\/07\/post_5\/\" target=\"_blank\">\u5358\u7d14\u306a\u6587\u5b57\u5217\u306e\u691c\u7d22<\/a>\u3082\u4eca\u56de\u306e\u3088\u3046\u306a\u7279\u5b9a\u4f4d\u7f6e\u306e\u6587\u5b57\u5217\u691c\u7d22\u3082\u300cstrpos\u300d\u304c\u6700\u901f\u3068\u3044\u3046\u7d50\u679c\u306b\u306a\u3063\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u306b\u3066\u300c\u25cb\u25cb\u3067\u59cb\u307e\u308b\u6587\u5b57\u5217\u300d\u3092\u691c\u7d22\u3059\u308b\u5834\u5408\u3001\u4e00\u756a\u306b\u601d\u3044\u3064\u304f\u306e\u306f\u6b63\u898f\u8868\u73fe\u3060\u3051\u3069\u91cd\u3044\u306e\u3067strpos\u3067\u691c\u7d22\u3057\u3066\u3044\u305f\u304cstrpos\u306f\u691c\u7d22\u4f4d\u7f6e\u3092\u8fd4\u3059\u3057\u5168\u4f53\u3092\u691c\u7d22\u3059\u308b\u306e\u3067\u306a\u3093\u3068\u306a\u304f\u9045\u3044\u304b\u306a\u3068\u601d\u3044\u5225\u306e\u65b9\u6cd5\u3092\u6a21\u7d22\u3057\u3066\u307f\u305f\u3002 PHP<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[205],"tags":[81,262],"class_list":["post-1480","post","type-post","status-publish","format-standard","hentry","category-creatorsdiary","tag-php","tag-262"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/posts\/1480","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/comments?post=1480"}],"version-history":[{"count":2,"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/posts\/1480\/revisions"}],"predecessor-version":[{"id":1482,"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/posts\/1480\/revisions\/1482"}],"wp:attachment":[{"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/media?parent=1480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/categories?post=1480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/uda2.com\/blog\/wp-json\/wp\/v2\/tags?post=1480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}