{"id":1696,"date":"2025-11-12T07:14:38","date_gmt":"2025-11-11T23:14:38","guid":{"rendered":"https:\/\/www.chinaenow.com\/blog\/?p=1696"},"modified":"2025-11-12T07:14:38","modified_gmt":"2025-11-11T23:14:38","slug":"strpos%e5%87%bd%e6%95%b0%e5%9c%a8%e5%93%aa%e9%87%8c%e4%bd%bf%e7%94%a8%e6%9c%80%e5%90%88%e9%80%82%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.chinaenow.com\/blog\/1696.html","title":{"rendered":"strpos\u51fd\u6570\u5728\u54ea\u91cc\u4f7f\u7528\u6700\u5408\u9002\uff1f"},"content":{"rendered":"

\u4ec0\u4e48\u662f strpos() \u51fd\u6570<\/h3>\n<\/p>\n

\"strpos\u51fd\u6570\u5728\u54ea\u91cc\u4f7f\u7528\u6700\u5408\u9002\uff1f\"<\/p>\n

strpos() \u51fd\u6570\u662f PHP \u8bed\u8a00\u4e2d\u7684\u4e00\u4e2a\u5185\u7f6e\u51fd\u6570\uff0c\u7528\u4e8e\u5728\u5b57\u7b26\u4e32\u4e2d\u67e5\u627e\u5b50\u5b57\u7b26\u4e32\u9996\u6b21\u51fa\u73b0\u7684\u4f4d\u7f6e\u3002\u5b83\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\n

int strpos(string $haystack, string $needle, int $offset = 0)<\/code><\/pre>\n<\/p>\n
\u5176\u4e2d\uff0c$haystack \u662f\u8981\u641c\u7d22\u7684\u5b57\u7b26\u4e32\uff0c$needle \u662f\u8981\u67e5\u627e\u7684\u5b50\u5b57\u7b26\u4e32\uff0c$offset \u662f\u53ef\u9009\u53c2\u6570\uff0c\u8868\u793a\u4ece\u54ea\u4e2a\u4f4d\u7f6e\u5f00\u59cb\u641c\u7d22\u3002<\/p>\n<\/p>\n
\u5982\u4f55\u4f7f\u7528 strpos() \u51fd\u6570<\/h3>\n<\/p>\n
\u5728\u4f7f\u7528 strpos() \u51fd\u6570\u65f6\uff0c\u9700\u8981\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\uff1a<\/p>\n<\/p>\n
    \n
  1. \u5b9a\u4e49\u4e00\u4e2a\u5305\u542b\u8981\u641c\u7d22\u7684\u5b57\u7b26\u4e32\u7684\u53d8\u91cf\u3002<\/li>\n
  2. \u5b9a\u4e49\u4e00\u4e2a\u5305\u542b\u8981\u67e5\u627e\u7684\u5b50\u5b57\u7b26\u4e32\u7684\u53d8\u91cf\u3002<\/li>\n
  3. \u8c03\u7528 strpos() \u51fd\u6570\uff0c\u5e76\u5c06\u4e0a\u8ff0\u4e24\u4e2a\u53d8\u91cf\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u3002<\/li>\n
  4. \u68c0\u67e5\u8fd4\u56de\u503c\uff0c\u5982\u679c\u8fd4\u56de\u503c\u5927\u4e8e\u7b49\u4e8e 0\uff0c\u5219\u8868\u793a\u627e\u5230\u4e86\u5b50\u5b57\u7b26\u4e32\uff1b\u5982\u679c\u8fd4\u56de\u503c\u5c0f\u4e8e 0\uff0c\u5219\u8868\u793a\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ol>\n
    \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 strpos() \u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
    $str = \"Hello, world!\";<\/p>\r\n
    $substring = \"world\";<\/p>\r\n
    $position = strpos($str, $substring);<\/p>\r\n
    if ($position !== false) {<\/p>\r\n
        echo \"\u5b50\u5b57\u7b26\u4e32 'world' \u5728\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\u662f\uff1a$position\";<\/p>\r\n
    } else {<\/p>\r\n
        echo \"\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32 'world'\";<\/p>\r\n
    }<\/code><\/pre>\n<\/p>\n
    strpos() \u51fd\u6570\u7684\u8fd4\u56de\u503c<\/h3>\n<\/p>\n
    strpos() \u51fd\u6570\u8fd4\u56de\u5b50\u5b57\u7b26\u4e32\u5728\u7236\u5b57\u7b26\u4e32\u4e2d\u9996\u6b21\u51fa\u73b0\u7684\u4f4d\u7f6e\u3002\u5982\u679c\u627e\u5230\u4e86\u5b50\u5b57\u7b26\u4e32\uff0c\u5219\u8fd4\u56de\u8be5\u5b50\u5b57\u7b26\u4e32\u7684\u7b2c\u4e00\u4e2a\u5b57\u7b26\u5728\u7236\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\u7d22\u5f15\uff1b\u5982\u679c\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32\uff0c\u5219\u8fd4\u56de FALSE\u3002<\/p>\n<\/p>\n
    \u4ee5\u4e0b\u662f\u4e00\u4e9b\u5173\u4e8e\u8fd4\u56de\u503c\u7684\u60c5\u51b5\uff1a<\/p>\n<\/p>\n
      \n
    1. \u8fd4\u56de\u503c\u5927\u4e8e\u7b49\u4e8e 0\uff1a\u8868\u793a\u627e\u5230\u4e86\u5b50\u5b57\u7b26\u4e32\u3002<\/li>\n
    2. \u8fd4\u56de\u503c\u5c0f\u4e8e 0\uff1a\u8868\u793a\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ol>\n
      strpos() \u51fd\u6570\u7684 offset \u53c2\u6570<\/h3>\n<\/p>\n
      strpos() \u51fd\u6570\u7684 offset \u53c2\u6570\u5141\u8bb8\u4f60\u6307\u5b9a\u4ece\u54ea\u4e2a\u4f4d\u7f6e\u5f00\u59cb\u641c\u7d22\u5b50\u5b57\u7b26\u4e32\u3002\u8fd9\u5728\u4f60\u9700\u8981\u5728\u5b57\u7b26\u4e32\u7684\u7279\u5b9a\u4f4d\u7f6e\u5f00\u59cb\u641c\u7d22\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
      \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 offset \u53c2\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
      $str = \"Hello, world!\";<\/p>\r\n
      $substring = \"world\";<\/p>\r\n
      $offset = 7;<\/p>\r\n
      $position = strpos($str, $substring, $offset);<\/p>\r\n
      if ($position !== false) {<\/p>\r\n
          echo \"\u4ece\u4f4d\u7f6e $offset \u5f00\u59cb\uff0c\u5b50\u5b57\u7b26\u4e32 'world' \u5728\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\u662f\uff1a$position\";<\/p>\r\n
      } else {<\/p>\r\n
          echo \"\u4ece\u4f4d\u7f6e $offset \u5f00\u59cb\uff0c\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32 'world'\";<\/p>\r\n
      }<\/code><\/pre>\n<\/p>\n
      \u5982\u4f55\u5904\u7406\u627e\u4e0d\u5230\u5b50\u5b57\u7b26\u4e32\u7684\u60c5\u51b5<\/h3>\n<\/p>\n
      \u5f53\u4f7f\u7528 strpos() \u51fd\u6570\u65f6\uff0c\u5982\u679c\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32\uff0c\u51fd\u6570\u4f1a\u8fd4\u56de FALSE\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u8fd9\u79cd\u60c5\u51b5\u8fdb\u884c\u5904\u7406\uff0c\u4ee5\u907f\u514d\u7a0b\u5e8f\u51fa\u9519\u3002<\/p>\n<\/p>\n
      \u4ee5\u4e0b\u662f\u4e00\u4e2a\u5904\u7406\u627e\u4e0d\u5230\u5b50\u5b57\u7b26\u4e32\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
      $str = \"Hello, world!\";<\/p>\r\n
      $substring = \"test\";<\/p>\r\n
      $position = strpos($str, $substring);<\/p>\r\n
      if ($position !== false) {<\/p>\r\n
          echo \"\u5b50\u5b57\u7b26\u4e32 '$substring' \u5728\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\u662f\uff1a$position\";<\/p>\r\n
      } else {<\/p>\r\n
          echo \"\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32 '$substring'\uff0c\u8bf7\u68c0\u67e5\u8f93\u5165\";<\/p>\r\n
      }<\/code><\/pre>\n<\/p>\n
      strpos() \u51fd\u6570\u7684\u9002\u7528\u573a\u666f<\/h3>\n<\/p>\n
      strpos() \u51fd\u6570\u5728\u5904\u7406\u5b57\u7b26\u4e32\u5339\u914d\u65f6\u975e\u5e38\u6709\u7528\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u9002\u7528\u573a\u666f\uff1a<\/p>\n<\/p>\n
        \n
      1. \u68c0\u67e5\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002<\/li>\n
      2. \u83b7\u53d6\u4e00\u4e2a\u5b50\u5b57\u7b26\u4e32\u5728\u7236\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\u3002<\/li>\n
      3. \u5206\u5272\u5b57\u7b26\u4e32\u5e76\u83b7\u53d6\u7279\u5b9a\u7684\u5b50\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ol>\n
        \u5173\u4e8e strpos() \u51fd\u6570\u7684\u5e38\u89c1\u95ee\u9898<\/h3>\n<\/p>\n
        \u5982\u4f55\u533a\u5206 strpos() \u51fd\u6570\u8fd4\u56de\u7684\u7d22\u5f15\u503c\u662f 0 \u8fd8\u662f\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32\uff1f<\/b><\/p>\n
        \u5f53 strpos() \u51fd\u6570\u8fd4\u56de 0 \u65f6\uff0c\u8868\u793a\u627e\u5230\u4e86\u5b50\u5b57\u7b26\u4e32\uff0c\u5e76\u4e14\u5b50\u5b57\u7b26\u4e32\u7684\u7b2c\u4e00\u4e2a\u5b57\u7b26\u5728\u7236\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\u662f 0\u3002\u5982\u679c\u8fd4\u56de\u503c\u5c0f\u4e8e 0\uff0c\u5219\u8868\u793a\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
        strpos() \u51fd\u6570\u662f\u5426\u652f\u6301\u4e2d\u6587\uff1f<\/b><\/p>\n
        strpos() \u51fd\u6570\u652f\u6301\u4e2d\u6587\uff0c\u4f46\u662f\u5728\u8fdb\u884c\u641c\u7d22\u65f6\uff0c\u9700\u8981\u786e\u4fdd\u7236\u5b57\u7b26\u4e32\u548c\u5b50\u5b57\u7b26\u4e32\u7684\u7f16\u7801\u4e00\u81f4\u3002<\/p>\n<\/p>\n
        strpos() \u51fd\u6570\u7684 offset \u53c2\u6570\u662f\u5426\u53ef\u4ee5\u5927\u4e8e\u7236\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff1f<\/b><\/p>\n
        \u662f\u7684\uff0coffset \u53c2\u6570\u53ef\u4ee5\u5927\u4e8e\u7236\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cstrpos() \u51fd\u6570\u5c06\u8fd4\u56de 0\uff0c\u8868\u793a\u672a\u627e\u5230\u5b50\u5b57\u7b26\u4e32\u3002<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
        \u4ec0\u4e48\u662f strpos() \u51fd\u6570 strpos() \u51fd\u6570\u662f PHP \u8bed\u8a00\u4e2d\u7684\u4e00\u4e2a\u5185\u7f6e\u51fd\u6570\uff0c\u7528\u4e8e\u5728\u5b57\u7b26\u4e32\u4e2d\u67e5\u627e\u5b50\u5b57\u7b26\u4e32\u9996\u6b21\u51fa\u73b0\u7684\u4f4d\u7f6e\u3002\u5b83\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a int strpos(string $haystack, string $needle, …<\/p>\n","protected":false},"author":2,"featured_media":1697,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[393,335,394],"topic":[],"class_list":["post-1696","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jp","tag-strpos","tag-335","tag-394"],"_links":{"self":[{"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/posts\/1696","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/comments?post=1696"}],"version-history":[{"count":1,"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/posts\/1696\/revisions"}],"predecessor-version":[{"id":1699,"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/posts\/1696\/revisions\/1699"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/media\/1697"}],"wp:attachment":[{"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/media?parent=1696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/categories?post=1696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/tags?post=1696"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.chinaenow.com\/blog\/wp-json\/wp\/v2\/topic?post=1696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}