{"id":157,"date":"2013-04-16T18:16:34","date_gmt":"2013-04-16T10:16:34","guid":{"rendered":"http:\/\/blog.feizhaojun.com\/?p=157"},"modified":"2013-04-16T18:26:05","modified_gmt":"2013-04-16T10:26:05","slug":"sprintf%e5%87%bd%e6%95%b0%ef%bc%9aphp%e5%9c%a8%e8%be%93%e5%87%ba%e6%95%b0%e5%ad%97%e5%89%8d%e8%a1%a50","status":"publish","type":"post","link":"https:\/\/feizhaojun.com\/?p=157","title":{"rendered":"sprintf\u51fd\u6570\uff1aPHP\u5728\u8f93\u51fa\u6570\u5b57\u524d\u88650\uff0c\u53bb\u6389\u5c0f\u6570\u540e\u9762\u76840"},"content":{"rendered":"

\u5f88\u591a\u65f6\u5019\u6211\u4eec\u9700\u8981\u5bf9\u6570\u5b57\u8fdb\u884c\u683c\u5f0f\u5316\uff0c\u6bd4\u5982\u4f4d\u6570\u4e0d\u8db3\u524d\u9762\u52a00\u8865\u8db3\u3002\u7528PHP\u81ea\u5e26\u7684sprintf\u51fd\u6570\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u3002<\/p>\n

\u5982\u679c\u60f3\u53bb\u6389\u5c0f\u6570\u540e\u9762\u76840\u53ef\u4ee5\u4f7f\u7528(float)$var\u3002<\/p>\n

[PHP]<\/p>\n

<?php
\n\/\/\u751f\u62104\u4f4d\u6570\uff0c\u4e0d\u8db3\u524d\u9762\u88650
\n$var=sprintf(\"%04d\", 2);
\necho $var;\/\/\u7ed3\u679c\u4e3a0002<\/p>\n

echo date('Y_m_d', time()).'_'.sprintf('d', rand(0,99));
\n?><\/p>\n

[\/PHP]<\/p>\n

sprintf()\u51fd\u6570<\/h4>\n

1. \u8bed\u6cd5<\/p>\n

sprintf(format,arg1,arg2,arg++)<\/pre>\n\n\n\n\n\n\n\n
\u53c2\u6570<\/th>\n\u63cf\u8ff0<\/th>\n<\/tr>\n
format<\/td>\n\u5fc5\u9700\u3002\u8f6c\u6362\u683c\u5f0f\u3002<\/td>\n<\/tr>\n
arg1<\/td>\n\u5fc5\u9700\u3002\u89c4\u5b9a\u63d2\u5230 format \u5b57\u7b26\u4e32\u4e2d\u7b2c\u4e00\u4e2a % \u7b26\u53f7\u5904\u7684\u53c2\u6570\u3002<\/td>\n<\/tr>\n
arg2<\/td>\n\u53ef\u9009\u3002\u89c4\u5b9a\u63d2\u5230 format \u5b57\u7b26\u4e32\u4e2d\u7b2c\u4e8c\u4e2a % \u7b26\u53f7\u5904\u7684\u53c2\u6570\u3002<\/td>\n<\/tr>\n
arg++<\/td>\n\u53ef\u9009\u3002\u89c4\u5b9a\u63d2\u5230 format \u5b57\u7b26\u4e32\u4e2d\u7b2c\u4e09\u3001\u56db\u7b49\u7b49 % \u7b26\u53f7\u5904\u7684\u53c2\u6570\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
2. \u8bf4\u660e<\/p>\n
\u53c2\u6570 format<\/em> \u662f\u8f6c\u6362\u7684\u683c\u5f0f\uff0c\u4ee5\u767e\u5206\u6bd4\u7b26\u53f7 (\"%\") \u5f00\u59cb\u5230\u8f6c\u6362\u5b57\u7b26\u7ed3\u675f\u3002\u4e0b\u9762\u7684\u53ef\u80fd\u7684 format<\/em> \u503c\uff1a<\/p>\n
    \n
  • %% - \u8fd4\u56de\u767e\u5206\u6bd4\u7b26\u53f7<\/li>\n
  • %b - \u4e8c\u8fdb\u5236\u6570<\/li>\n
  • %c - \u4f9d\u7167 ASCII \u503c\u7684\u5b57\u7b26<\/li>\n
  • %d - \u5e26\u7b26\u53f7\u5341\u8fdb\u5236\u6570<\/li>\n
  • %e - \u53ef\u7eed\u8ba1\u6570\u6cd5\uff08\u6bd4\u5982 1.5e+3\uff09<\/li>\n
  • %u - \u65e0\u7b26\u53f7\u5341\u8fdb\u5236\u6570<\/li>\n
  • %f - \u6d6e\u70b9\u6570(local settings aware)<\/li>\n
  • %F - \u6d6e\u70b9\u6570(not local settings aware)<\/li>\n
  • %o - \u516b\u8fdb\u5236\u6570<\/li>\n
  • %s - \u5b57\u7b26\u4e32<\/li>\n
  • %x - \u5341\u516d\u8fdb\u5236\u6570\uff08\u5c0f\u5199\u5b57\u6bcd\uff09<\/li>\n
  • %X - \u5341\u516d\u8fdb\u5236\u6570\uff08\u5927\u5199\u5b57\u6bcd\uff09<\/li>\n<\/ul>\n
    arg1, arg2, ++ \u7b49\u53c2\u6570\u5c06\u63d2\u5165\u5230\u4e3b\u5b57\u7b26\u4e32\u4e2d\u7684\u767e\u5206\u53f7 (%) \u7b26\u53f7\u5904\u3002\u8be5\u51fd\u6570\u662f\u9010\u6b65\u6267\u884c\u7684\u3002\u5728\u7b2c\u4e00\u4e2a % \u7b26\u53f7\u4e2d\uff0c\u63d2\u5165 arg1\uff0c\u5728\u7b2c\u4e8c\u4e2a % \u7b26\u53f7\u5904\uff0c\u63d2\u5165 arg2\uff0c\u4f9d\u6b64\u7c7b\u63a8\u3002<\/p>\n
    <?php   \r\n$number = 123;   \r\n$txt = sprintf(\"%f\",$number);   \r\necho $txt;   \r\n?><\/pre>\n
    3. \u683c\u5f0f\u6570\u5b57 number_format()<\/p>\n
    <?php   \r\n$number = 1234.56;\r\n\r\n\/\/ english notation (default)\r\n$english_format_number = number_format($number);\r\n\/\/ 1,235\r\n\r\n\/\/ French notation\r\n$nombre_format_francais = number_format($number, 2, ',', ' ');\r\n\/\/ 1 234,56\r\n\r\n$number = 1234.5678;\r\n\r\n\/\/ english notation without thousands seperator\r\n$english_format_number = number_format($number, 2, '.', '');\r\n\/\/ 1234.57\r\n?><\/pre>\n","protected":false},"excerpt":{"rendered":"
    \u5f88\u591a\u65f6\u5019\u6211\u4eec\u9700\u8981\u5bf9\u6570\u5b57\u8fdb\u884c\u683c\u5f0f\u5316\uff0c\u6bd4\u5982\u4f4d\u6570\u4e0d\u8db3\u524d\u9762\u52a00\u8865\u8db3\u3002\u7528PHP\u81ea\u5e26\u7684sprintf\u51fd\u6570\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u3002 \u5982\u679c\u60f3\u53bb\u6389\u5c0f…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-157","post","type-post","status-publish","format-standard","hentry","category-php"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/feizhaojun.com\/index.php?rest_route=\/wp\/v2\/posts\/157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/feizhaojun.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/feizhaojun.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/feizhaojun.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/feizhaojun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=157"}],"version-history":[{"count":5,"href":"https:\/\/feizhaojun.com\/index.php?rest_route=\/wp\/v2\/posts\/157\/revisions"}],"predecessor-version":[{"id":162,"href":"https:\/\/feizhaojun.com\/index.php?rest_route=\/wp\/v2\/posts\/157\/revisions\/162"}],"wp:attachment":[{"href":"https:\/\/feizhaojun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feizhaojun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feizhaojun.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}