{"id":67,"date":"2013-08-02T08:55:02","date_gmt":"2013-08-02T00:55:02","guid":{"rendered":"http:\/\/ufqi.com\/blog\/?p=67"},"modified":"2014-11-01T08:53:29","modified_gmt":"2014-11-01T00:53:29","slug":"php_mb_substr_charset","status":"publish","type":"post","link":"https:\/\/ufqi.com\/blog\/php_mb_substr_charset\/","title":{"rendered":"php\u4e2dmb_substr\u9700\u586b\u5165\u7b2c\u5b57\u7b26\u7f16\u7801\u53c2\u6570"},"content":{"rendered":"<p>\u5728\u6700\u8fd1\u7684\u4e00\u6b21\u6d4b\u8bd5\u4e2d\uff0c\u9700\u8981\u7528\u5230\u4e2d\u6587\u5b57\u7b26\u4e32\u622a\u53d6\uff0c\u8fd9\u4e2a\u4ece2005\u5e74\u5c31\u9762\u4e34\u7684\u95ee\u9898\uff0c\u5982\u4eca\u518d\u6b21\u6210\u4e3a\u95ee\u9898\u3002<\/p>\n<p>\u4e4b\u524d\u7684\u505a\u6cd5\u662f\u81ea\u5df1\u5199\u5355\u72ec\u7684\u5904\u7406\u51fd\u6570\uff0c\u5728\u622a\u53d6\u7684\u8fc7\u7a0b\u4e2d\u4f7f\u7528substr\u51fd\u6570\u52a0\u4e0achr\u7b49\u51fd\u6570\u786c\u5224\u65ad\u662f\u5426\u662fASCII\u5b57\u7b26\u6216\u8005\u662f\u591a\u5b57\u8282\u5b57\u7b26\u3002<\/p>\n<p>\u73b0\u5728\u5e94\u8be5\u6709\u6240\u6539\u89c2\uff0c\u91cd\u65b0\u7f16\u8bd1\u4e86php\uff0c\u5728congfigure\u65f6\u589e\u52a0 &#8211;enable_mbstring , \u7136\u540erestart apache\u5373\u53ef\u751f\u6548\u3002<\/p>\n<p>\u53ef\u5b9e\u6d4b\u7684\u7ed3\u679c\u5e76\u6ca1\u6709\u4ee4\u4eba\u6ee1\u610f\uff0cstring\u00a0<strong>mb_substr<\/strong>\u00a0(\u00a0string\u00a0<code>$str<\/code>\u00a0,\u00a0int\u00a0<code>$start<\/code>\u00a0[,\u00a0int\u00a0<code>$length<\/code>\u00a0[,\u00a0string<code>$encoding<\/code>\u00a0]] )<\/p>\n<p>\u8fd9\u4e2a\u5b9a\u4e49\u4e2d\uff0c\u7b2c\u56db\u4e2a\u53c2\u6570\u662f encoding\uff0c\u5982\u679c\u4e0d\u586b\u5199\u9ed8\u8ba4\u5f88\u53ef\u80fd\u8fd8\u662fASCII\u3002\u6240\u4ee5\u6b63\u786e\u5207\u51fa\u4e2d\u6587\u5b57\u7b26\uff0c\u8fd8\u9700\u8ba4\u771f\u586b\u5199\u8fd9\u4e2a\u53c2\u6570\uff0c\u5982\uff1a<\/p>\n<p>$shortStr = mb_substr($longStr, 0, 28, &#8216;utf-8&#8217;);<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u6700\u8fd1\u7684\u4e00\u6b21\u6d4b\u8bd5\u4e2d\uff0c\u9700\u8981\u7528\u5230\u4e2d\u6587\u5b57\u7b26\u4e32\u622a\u53d6\uff0c\u8fd9\u4e2a\u4ece2005\u5e74\u5c31\u9762\u4e34\u7684\u95ee\u9898\uff0c\u5982\u4eca\u518d &hellip; <a href=\"https:\/\/ufqi.com\/blog\/php_mb_substr_charset\/\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6,2],"tags":[],"_links":{"self":[{"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/posts\/67"}],"collection":[{"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/comments?post=67"}],"version-history":[{"count":2,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/posts\/67\/revisions"}],"predecessor-version":[{"id":724,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/posts\/67\/revisions\/724"}],"wp:attachment":[{"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/media?parent=67"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/categories?post=67"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/tags?post=67"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}