{"id":2955,"date":"2025-03-18T23:44:10","date_gmt":"2025-03-18T15:44:10","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2955"},"modified":"2025-03-18T23:44:10","modified_gmt":"2025-03-18T15:44:10","slug":"php-eof%ef%bc%88heredoc%ef%bc%89%e8%af%ad%e6%b3%95%e4%bd%bf%e7%94%a8%e8%af%b4%e6%98%8e","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/18\/php-eof%ef%bc%88heredoc%ef%bc%89%e8%af%ad%e6%b3%95%e4%bd%bf%e7%94%a8%e8%af%b4%e6%98%8e\/","title":{"rendered":"PHP EOF\uff08Heredoc\uff09\u8bed\u6cd5\u4f7f\u7528\u8bf4\u660e"},"content":{"rendered":"\n

\u5728 PHP \u4e2d\uff0cHeredoc \u8bed\u6cd5<\/strong>\uff08\u53c8\u79f0 EOF<\/code> \u8bed\u6cd5\uff09\u7528\u4e8e\u5904\u7406\u591a\u884c\u5b57\u7b26\u4e32\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u6613\u8bfb\u3001\u66f4\u76f4\u89c2\u7684\u65b9\u5f0f\u6765\u5b9a\u4e49\u957f\u5b57\u7b26\u4e32\uff0c\u800c\u65e0\u9700\u624b\u52a8\u62fc\u63a5\u6362\u884c\u7b26\u6216\u4f7f\u7528\u5b57\u7b26\u4e32\u8fde\u63a5\u8fd0\u7b97\u7b26 (.<\/code>)\u3002<\/p>\n\n\n\n

\n\n\n\n

1. Heredoc \u8bed\u6cd5\u683c\u5f0f<\/strong><\/h2>\n\n\n\n
<<<\u6807\u8bc6\u7b26\n\u5b57\u7b26\u4e32\u5185\u5bb9\n\u6807\u8bc6\u7b26;<\/code><\/pre>\n\n\n\n
    \n
  • <<<<\/code> \u540e\u9762\u7d27\u8ddf\u4e00\u4e2a \u81ea\u5b9a\u4e49\u6807\u8bc6\u7b26<\/strong>\uff08\u901a\u5e38\u4e3a EOF<\/code>\uff0c\u4f46\u53ef\u4ee5\u662f\u4efb\u610f\u5408\u6cd5\u7684\u6807\u8bc6\u7b26\uff09\u3002<\/li>\n\n\n\n
  • \u7ed3\u675f\u6807\u8bc6\u7b26 \u5fc5\u987b\u5355\u72ec\u5360\u4e00\u884c\uff0c\u4e14\u524d\u540e\u4e0d\u80fd\u6709\u7a7a\u683c\u6216\u7f29\u8fdb<\/strong>\u3002<\/li>\n\n\n\n
  • \u5b57\u7b26\u4e32\u53ef\u4ee5\u5305\u542b\u53d8\u91cf<\/strong>\uff0cPHP \u4f1a\u81ea\u52a8\u89e3\u6790\u5176\u4e2d\u7684\u53d8\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n
    \n\n\n\n
    2. \u57fa\u672c\u793a\u4f8b<\/strong><\/h2>\n\n\n\n
    <?php\n$name = \"PHP\";\n$heredoc_str = <<<EOF\nHello, this is a Heredoc example.\nWe are learning $name today!\nThis syntax allows multi-line strings.\nEOF;\n\necho $heredoc_str;\n?><\/code><\/pre>\n\n\n\n
    \u8fd0\u884c\u7ed3\u679c<\/strong><\/h3>\n\n\n\n
    Hello, this is a Heredoc example.\nWe are learning PHP today!\nThis syntax allows multi-line strings.<\/code><\/pre>\n\n\n\n
      \n
    • $name<\/code> \u53d8\u91cf\u4f1a\u88ab\u89e3\u6790\u5e76\u66ff\u6362\u4e3a PHP<\/code>\u3002<\/li>\n\n\n\n
    • \u53ef\u4ee5\u76f4\u63a5\u4e66\u5199\u6362\u884c\uff0c\u4e0d\u9700\u8981 \\n<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n
      3. \u5728 HTML \u4e2d\u4f7f\u7528 Heredoc<\/strong><\/h2>\n\n\n\n
      Heredoc \u8bed\u6cd5\u975e\u5e38\u9002\u5408\u7528\u4e8e\u5d4c\u5165 HTML \u4ee3\u7801\uff1a<\/p>\n\n\n\n
      <?php\n$title = \"My PHP Page\";\n$content = \"Welcome to my PHP tutorial!\";\necho <<<HTML\n<!DOCTYPE html>\n<html>\n<head>\n    <title>$title<\/title>\n<\/head>\n<body>\n    <h1>$title<\/h1>\n    <p>$content<\/p>\n<\/body>\n<\/html>\nHTML;\n?><\/code><\/pre>\n\n\n\n
        \n
      • Heredoc \u89e3\u6790\u53d8\u91cf<\/strong>\uff0c\u56e0\u6b64 $title<\/code> \u548c $content<\/code> \u4f1a\u88ab\u66ff\u6362\u4e3a\u5b9e\u9645\u503c\u3002<\/li>\n\n\n\n
      • \u4ee3\u7801\u7ed3\u6784\u6e05\u6670\uff0c\u907f\u514d\u4f7f\u7528\u5927\u91cf\u7684 echo<\/code> \u8bed\u53e5\u3002<\/li>\n<\/ul>\n\n\n\n
        \n\n\n\n
        4. Heredoc \u4e0e\u5b57\u7b26\u4e32\u62fc\u63a5<\/strong><\/h2>\n\n\n\n
        \u53ef\u4ee5\u76f4\u63a5\u5c06 Heredoc \u8d4b\u503c\u7ed9\u53d8\u91cf<\/strong>\uff0c\u5e76\u7ed3\u5408\u5176\u4ed6\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n
        <?php\n$var1 = \"PHP\";\n$var2 = <<<EOF\nThis is a tutorial about $var1.\nEOF;\n\n$var3 = $var2 . \" Hope you enjoy it!\";\necho $var3;\n?><\/code><\/pre>\n\n\n\n
        \u8f93\u51fa<\/strong><\/h3>\n\n\n\n
        This is a tutorial about PHP. Hope you enjoy it!<\/code><\/pre>\n\n\n\n
        \n\n\n\n
        5. \u5728\u51fd\u6570\u4e2d\u4f7f\u7528 Heredoc<\/strong><\/h2>\n\n\n\n
        Heredoc \u4e5f\u53ef\u4ee5\u5728\u51fd\u6570\u5185\u90e8\u4f7f\u7528\uff1a<\/p>\n\n\n\n
        <?php\nfunction getMessage() {\n    return <<<MSG\nHello, this is a Heredoc string inside a function.\nIt works just fine!\nMSG;\n}\n\necho getMessage();\n?><\/code><\/pre>\n\n\n\n
        \n\n\n\n
        6. \u4f7f\u7528 Heredoc \u4f5c\u4e3a\u6570\u7ec4\u503c<\/strong><\/h2>\n\n\n\n
        Heredoc \u4e5f\u53ef\u4ee5\u7528\u4f5c\u6570\u7ec4\u7684\u5143\u7d20\uff1a<\/p>\n\n\n\n
        <?php\n$array = [\n    'heredoc' => <<<TXT\nThis is an array element using Heredoc.\nTXT\n];\n\necho $array['heredoc'];\n?><\/code><\/pre>\n\n\n\n
        \n\n\n\n
        7. Heredoc \u4e0d\u80fd\u7528\u4e8e\u4ee5\u4e0b\u573a\u666f<\/strong><\/h2>\n\n\n\n
          \n
        • \u7ed3\u675f\u6807\u8bc6\u7b26 \u4e0d\u80fd\u6709\u7f29\u8fdb<\/strong>\uff0c\u5fc5\u987b\u4ece\u884c\u9996\u5f00\u59cb\u3002<\/li>\n\n\n\n
        • \u4e0d\u80fd\u7528\u4e8e echo <<<EOF;<\/code> \u8fd9\u6837\u7684\u5199\u6cd5\uff0cEOF<\/code> \u5fc5\u987b\u4f5c\u4e3a \u72ec\u7acb\u5b57\u7b26\u4e32<\/strong>\u3002<\/li>\n\n\n\n
        • \u4e0d\u80fd\u76f4\u63a5\u7528\u4e8e \u7c7b\u5e38\u91cf<\/strong>\uff08const<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
          \u274c \u9519\u8bef\u793a\u4f8b<\/strong><\/p>\n\n\n\n
          <?php\nclass Test {\n    const MESSAGE = <<<TXT\nThis won't work!\nTXT;\n}\n?><\/code><\/pre>\n\n\n\n
          \u9519\u8bef\uff1a<\/strong> const<\/code> \u4e0d\u80fd\u4f7f\u7528 Heredoc \u8bed\u6cd5\u3002<\/p>\n\n\n\n
          \u2705 \u6b63\u786e\u505a\u6cd5<\/strong><\/p>\n\n\n\n
          <?php\nclass Test {\n    public $message = <<<TXT\nThis will work!\nTXT;\n}\n?><\/code><\/pre>\n\n\n\n
          \n\n\n\n
          8. Nowdoc \u8bed\u6cd5\uff08\u7c7b\u4f3c Heredoc\uff0c\u4f46\u4e0d\u89e3\u6790\u53d8\u91cf\uff09<\/strong><\/h2>\n\n\n\n
          Nowdoc \u8bed\u6cd5\u7c7b\u4f3c\u4e8e Heredoc\uff0c\u4f46\u4e0d\u4f1a\u89e3\u6790\u5176\u4e2d\u7684\u53d8\u91cf\uff0c\u9002\u7528\u4e8e\u5b58\u50a8\u7eaf\u6587\u672c<\/strong>\uff1a<\/p>\n\n\n\n
          <?php\n$var = \"PHP\";\n$nowdoc_str = <<<'EOF'\nHello, this is a Nowdoc example.\nVariables like $var won't be parsed!\nEOF;\n\necho $nowdoc_str;\n?><\/code><\/pre>\n\n\n\n
          \u8f93\u51fa<\/strong><\/h3>\n\n\n\n
          Hello, this is a Nowdoc example.\nVariables like $var won't be parsed!<\/code><\/pre>\n\n\n\n
            \n
          • Heredoc\uff08<<<EOF<\/code>\uff09\u4f1a\u89e3\u6790\u53d8\u91cf<\/strong>\u3002<\/li>\n\n\n\n
          • Nowdoc\uff08<<<'EOF'<\/code>\uff09\u4e0d\u4f1a\u89e3\u6790\u53d8\u91cf<\/strong>\uff0c\u4f1a\u6309\u5b57\u9762\u503c\u8f93\u51fa\u3002<\/li>\n<\/ul>\n\n\n\n
            \n\n\n\n
            9. \u4f55\u65f6\u4f7f\u7528 Heredoc\uff1f<\/strong><\/h2>\n\n\n\n
              \n
            • \u9002\u7528\u4e8e\u591a\u884c\u6587\u672c<\/strong>\uff0c\u5982 HTML\u3001SQL \u67e5\u8be2\u3001Markdown \u6587\u672c\u7b49\u3002<\/li>\n\n\n\n
            • \u9700\u8981\u89e3\u6790\u53d8\u91cf<\/strong> \u65f6\u4f18\u5148\u4f7f\u7528 Heredoc\uff0c\u907f\u514d\u624b\u52a8\u62fc\u63a5\u5b57\u7b26\u4e32\u3002<\/li>\n\n\n\n
            • \u907f\u514d Nowdoc \u9650\u5236<\/strong>\uff08\u5982\u679c\u53d8\u91cf\u4e0d\u9700\u8981\u89e3\u6790\uff0c\u53ef\u4ee5\u7528 Nowdoc\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
              \n\n\n\n
              \u603b\u7ed3<\/strong><\/h2>\n\n\n\n
              \u8bed\u6cd5<\/th>\u53d8\u91cf\u89e3\u6790<\/th>\u9002\u7528\u573a\u666f<\/th><\/tr><\/thead>
              Heredoc (<<<EOF<\/code>)<\/strong><\/td>\u2705 \u89e3\u6790<\/td>\u591a\u884c\u6587\u672c\uff0cHTML\uff0cSQL\uff0c\u90ae\u4ef6\u6a21\u677f\u7b49<\/td><\/tr>
              Nowdoc (<<<'EOF'<\/code>)<\/strong><\/td>\u274c \u4e0d\u89e3\u6790<\/td>\u7eaf\u6587\u672c\uff08\u4e0d\u5e0c\u671b\u53d8\u91cf\u88ab\u89e3\u6790\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
              \n\n\n\n
              \u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
              \u5728 PHP \u4e2d\uff0cHeredoc \u8bed\u6cd5\uff08\u53c8\u79f0 EOF \u8bed\u6cd5\uff09\u7528\u4e8e\u5904\u7406\u591a\u884c\u5b57\u7b26\u4e32\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u6613\u8bfb\u3001\u66f4\u76f4\u89c2\u7684\u65b9\u5f0f […]<\/p>\n","protected":false},"author":1,"featured_media":2956,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[],"class_list":["post-2955","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2955","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2955"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2955\/revisions"}],"predecessor-version":[{"id":2957,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2955\/revisions\/2957"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/2956"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2955"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}