{"id":1120,"date":"2009-02-02T14:04:09","date_gmt":"2009-02-02T02:04:09","guid":{"rendered":""},"modified":"2009-02-02T14:04:09","modified_gmt":"2009-02-02T02:04:09","slug":"","status":"publish","type":"post","link":"https:\/\/www.mudone.com\/?p=1120","title":{"rendered":"php_url_encode"},"content":{"rendered":"

\u6700\u8fd1\u51e0\u5929\u5728\u6298\u817e\u7f51\u7ad9\u7684url\u89c4\u8303\u5316\u7684\u95ee\u9898\u3002<\/p>\n

\u5bf9urlencode\u51fd\u6570\u6bd4\u8f83\u597d\u5947\uff0c\u6252\u51faC\u4ee3\u7801\u6765\u770b\u4e86\u4e00\u4e0b\u3002\u539f\u6765\u662f16\u8fdb\u5236\u7684\u4e1c\u4e1c\u3002<\/p>\n

Ascii Table : http:\/\/www.asciitable.com\/<\/p>\n

\n
C\u4ee3\u7801 (\u53d6\u81eaphp-5.2.6\/ext\/standard\/url.c 430-489\u884c)<\/div>\n
    \n
  1. \/* rfc1738:<\/span> <\/span><\/li>\n
  2.  <\/span><\/li>\n
  3.    …The characters ";",<\/span> <\/span><\/li>\n
  4.    "\/", "?", ":", "@", "=" and "&" are the characters which may be<\/span> <\/span><\/li>\n
  5.    reserved for special meaning within a scheme…<\/span> <\/span><\/li>\n
  6.  <\/span><\/li>\n
  7.    …Thus, only alphanumerics, the special characters "$-_.+!*'(),", and<\/span> <\/span><\/li>\n
  8.    reserved characters used for their reserved purposes may be used<\/span> <\/span><\/li>\n
  9.    unencoded within a URL…<\/span> <\/span><\/li>\n
  10.  <\/span><\/li>\n
  11.    For added safety, we only leave -_. unencoded.<\/span> <\/span><\/li>\n
  12.  *\/<\/span>  <\/span><\/span><\/li>\n
  13.   <\/span><\/li>\n
  14. static<\/span> unsigned <\/span>char<\/span> hexchars[] = <\/span>"0123456789ABCDEF"<\/span>;  <\/span><\/span><\/li>\n
  15.   <\/span><\/li>\n
  16. \/* {{{ php_url_encode<\/span> <\/span><\/li>\n
  17.  *\/<\/span>  <\/span><\/span><\/li>\n
  18. PHPAPI char<\/span> *php_url_encode(<\/span>char<\/span> <\/span>const<\/span> *s, <\/span>int<\/span> len, <\/span>int<\/span> *new_length)  <\/span><\/span><\/li>\n
  19. {  <\/span><\/li>\n
  20.     register<\/span> unsigned <\/span>char<\/span> c;  <\/span><\/span><\/li>\n
  21.     unsigned char<\/span> *to, *start;  <\/span><\/span><\/li>\n
  22.     unsigned char<\/span> <\/span>const<\/span> *from, *end;  <\/span><\/span><\/li>\n
  23.       <\/span><\/li>\n
  24.     from = s;  <\/span><\/li>\n
  25.     end = s + len;  <\/span><\/li>\n
  26.     start = to = (unsigned char<\/span> *) safe_emalloc(3, len, 1);  <\/span><\/span><\/li>\n
  27.   <\/span><\/li>\n
  28.     while<\/span> (from < end) {  <\/span><\/span><\/li>\n
  29.         c = *from++;  <\/span><\/li>\n
  30.   <\/span><\/li>\n
  31.         if<\/span> (c == ‘ <\/span>‘) {<\/span> <\/span><\/li>\n
  32.             *to++ = ‘<\/span>+<\/span>‘;<\/span> <\/span><\/li>\n
  33. #ifndef CHARSET_EBCDIC<\/span> <\/span><\/li>\n
  34.         } else if ((c < ‘<\/span>0<\/span>‘ && c != ‘<\/span>–<\/span>‘ && c != ‘<\/span>.<\/span>‘) ||<\/span> <\/span><\/li>\n
  35.                    (c < ‘<\/span>A<\/span>‘ && c > ‘<\/span>9<\/span>‘) ||<\/span> <\/span><\/li>\n
  36.                    (c > ‘<\/span>Z<\/span>‘ && c < ‘<\/span>a<\/span>‘ && c != ‘<\/span>_<\/span>‘) ||<\/span> <\/span><\/li>\n
  37.                    (c > ‘<\/span>z<\/span>‘)) {  <\/span><\/span><\/li>\n
  38.             to[0] = ‘%<\/span>‘;<\/span> <\/span><\/li>\n
  39.             to[1] = hexchars[c >> 4];<\/span> <\/span><\/li>\n
  40.             to[2] = hexchars[c & 15];<\/span> <\/span><\/li>\n
  41.             to += 3;<\/span> <\/span><\/li>\n
  42. #else \/*CHARSET_EBCDIC*\/<\/span> <\/span><\/li>\n
  43.         } else if (!isalnum(c) && strchr("_-.", c) == NULL) {<\/span> <\/span><\/li>\n
  44.             \/* Allow only alphanumeric chars and ‘<\/span>_<\/span>‘, ‘<\/span>–<\/span>‘, ‘<\/span>.<\/span>‘; escape the rest *\/<\/span> <\/span><\/li>\n
  45.             to[0] = ‘<\/span>%’;  <\/span><\/span><\/li>\n
  46.             to[1] = hexchars[os_toascii[c] >> 4];  <\/span><\/li>\n
  47.             to[2] = hexchars[os_toascii[c] & 15];  <\/span><\/li>\n
  48.             to += 3;  <\/span><\/li>\n
  49. #endif \/*CHARSET_EBCDIC*\/<\/span>  <\/span><\/span><\/li>\n
  50.         } else<\/span> {  <\/span><\/span><\/li>\n
  51.             *to++ = c;  <\/span><\/li>\n
  52.         }  <\/span><\/li>\n
  53.     }  <\/span><\/li>\n
  54.     *to = 0;  <\/span><\/li>\n
  55.     if<\/span> (new_length) {  <\/span><\/span><\/li>\n
  56.         *new_length = to – start;  <\/span><\/li>\n
  57.     }  <\/span><\/li>\n
  58.     return<\/span> (<\/span>char<\/span> *) start;  <\/span><\/span><\/li>\n
  59. }  <\/span><\/li>\n
  60. \/* }}} *\/<\/span>  <\/span><\/span><\/li>\n<\/ol>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

    \u6700\u8fd1\u51e0\u5929\u5728\u6298\u817e\u7f51\u7ad9\u7684url\u89c4\u8303\u5316\u7684\u95ee\u9898\u3002 \u5bf9urlencode\u51fd\u6570\u6bd4\u8f83\u597d\u5947\uff0c\u6252\u51faC\u4ee3\u7801\u6765\u770b\u4e86\u4e00\u4e0b\u3002\u539f\u6765\u662f16\u8fdb […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-1120","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/posts\/1120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mudone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1120"}],"version-history":[{"count":0,"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/posts\/1120\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.mudone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mudone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mudone.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}