{"id":182561,"date":"2024-05-08T21:24:04","date_gmt":"2024-05-08T13:24:04","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/182561.html"},"modified":"2024-05-08T21:24:11","modified_gmt":"2024-05-08T13:24:11","slug":"php%e4%b8%ad%e5%ae%9a%e4%b9%89%e5%8f%98%e9%87%8f%e4%b8%8d%e8%83%bd%e5%8c%85%e5%90%ab%e5%93%aa%e4%ba%9b%e5%ad%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/182561.html","title":{"rendered":"php\u4e2d\u5b9a\u4e49\u53d8\u91cf\u4e0d\u80fd\u5305\u542b\u54ea\u4e9b\u5b57\u7b26"},"content":{"rendered":"

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\u4e00\u3001PHP\u53d8\u91cf\u547d\u540d\u89c4\u5219<\/h3>\n<\/p>\n

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\u4f8b\u5b50<\/strong>\uff1a\u6709\u6548\u7684\u53d8\u91cf\u547d\u540d\u5305\u62ec $example<\/code>\u3001$_example123<\/code> \u8fd9\u6837\u7684\u5f62\u5f0f\u3002\u65e0\u6548\u7684\u53d8\u91cf\u547d\u540d\u5305\u62ec $3example<\/code>\uff08\u56e0\u4e3a\u4ee5\u6570\u5b57\u5f00\u5934\uff09\u3001$example.var<\/code>\uff08\u5305\u542b\u70b9\uff09\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u4e0d\u5141\u8bb8\u7684\u5b57\u7b26\u8be6\u89e3<\/h3>\n<\/p>\n

\u7ee7\u7eed\u6df1\u5165\uff0c\u6211\u4eec\u6765\u66f4\u5177\u4f53\u5730\u63a2\u8ba8\u54ea\u4e9b\u5b57\u7b26\u662f\u4e0d\u88abPHP\u53d8\u91cf\u547d\u540d\u6240\u5141\u8bb8\u7684\u3002<\/p>\n<\/p>\n

    \n
  • \u7a7a\u683c\uff08 ' '\uff09<\/strong>\uff1a\u5982\u4e0a\u6240\u8ff0\uff0c\u7a7a\u683c\u5728PHP\u4e2d\u7528\u4e8e\u5206\u9694\u4ee3\u7801\u7684\u5404\u4e2a\u7ec4\u6210\u90e8\u5206\uff0c\u53d8\u91cf\u540d\u4e2d\u5305\u542b\u7a7a\u683c\u4f1a\u5bfc\u81f4\u89e3\u91ca\u5668\u65e0\u6cd5\u6b63\u786e\u5904\u7406\u3002<\/li>\n
  • \u6807\u70b9\u7b26\u53f7\u548c\u7279\u6b8a\u5b57\u7b26<\/strong>\uff1a\u6807\u70b9\u7b26\u53f7\u5982\u9017\u53f7\uff08,\uff09\u3001\u5206\u53f7\uff08;\uff09\u7b49\uff0c\u4ee5\u53ca\u7279\u6b8a\u5b57\u7b26\u5982\u7f8e\u5143\u7b26\u53f7\uff08$\uff09\uff08\u7f8e\u5143\u7b26\u53f7\u7528\u4e8e\u6807\u8bc6\u53d8\u91cf\u540d\u7684\u5f00\u59cb\uff0c\u4f46\u4e0d\u80fd\u51fa\u73b0\u5728\u53d8\u91cf\u540d\u7684\u5176\u4ed6\u4f4d\u7f6e\uff09\u3001\u767e\u5206\u53f7\uff08%\uff09\u7b49\uff0c\u90fd\u4e0d\u5141\u8bb8\u51fa\u73b0\u5728\u53d8\u91cf\u540d\u4e2d\uff0c\u56e0\u4e3a\u5b83\u4eec\u5728PHP\u4e2d\u627f\u62c5\u4e86\u5176\u4ed6\u8bed\u6cd5\u529f\u80fd\u3002<\/li>\n
  • \u6570\u5b66\u8fd0\u7b97\u7b26<\/strong>\uff1a\u52a0\uff08+\uff09\u3001\u51cf\uff08-\uff09\u3001\u4e58\uff08*\uff09\u3001\u9664\uff08\/\uff09\u7b49\u7b26\u53f7\u5982\u679c\u88ab\u5305\u542b\u5728\u53d8\u91cf\u540d\u4e2d\uff0c\u5c06\u4f1a\u88abPHP\u89e3\u91ca\u4e3a\u8fd0\u7b97\uff0c\u5bfc\u81f4\u89e3\u6790\u9519\u8bef\u3002<\/li>\n<\/ul>\n

    \u4e09\u3001\u53d8\u91cf\u547d\u540d\u7684\u6700\u4f73\u5b9e\u8df5<\/h3>\n<\/p>\n

    \u4e86\u89e3\u4e86\u53d8\u91cf\u547d\u540d\u7684\u89c4\u5219\u53ca\u9650\u5236\u540e\uff0c\u9075\u5faa\u4e00\u5b9a\u7684\u6700\u4f73\u5b9e\u8df5\u80fd\u591f\u8ba9\u60a8\u7684\u4ee3\u7801\u66f4\u52a0\u6e05\u6670\u3001\u6613\u8bfb\u3002<\/p>\n<\/p>\n

      \n
    • \u4f7f\u7528\u6709\u610f\u4e49\u7684\u547d\u540d<\/strong>\uff1a\u53d8\u91cf\u540d\u5e94\u8be5\u80fd\u591f\u53cd\u6620\u51fa\u53d8\u91cf\u7684\u7528\u9014\u6216\u6240\u5b58\u50a8\u6570\u636e\u7684\u7c7b\u578b\uff0c\u8fd9\u6837\u6709\u52a9\u4e8e\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n
    • \u9a7c\u5cf0\u547d\u540d\u6cd5<\/strong>\uff1a\u5728PHP\u4e2d\uff0c\u5e38\u89c1\u7684\u547d\u540d\u7ea6\u5b9a\u662f\u9a7c\u5cf0\u547d\u540d\u6cd5\uff08\u5373\u53d8\u91cf\u540d\u7684\u7b2c\u4e00\u4e2a\u5355\u8bcd\u4ee5\u5c0f\u5199\u5b57\u6bcd\u5f00\u59cb\uff0c\u4e4b\u540e\u6bcf\u4e2a\u5355\u8bcd\u7684\u9996\u5b57\u6bcd\u5927\u5199\uff0c\u4f8b\u5982 $myVariableName<\/code>\uff09\u3002\u8fd9\u4e0d\u662f\u5f3a\u5236\u7684\uff0c\u4f46\u8fd9\u6837\u505a\u53ef\u4ee5\u8ba9\u53d8\u91cf\u540d\u770b\u8d77\u6765\u66f4\u52a0\u6574\u6d01\u3002<\/li>\n<\/ul>\n

      \u56db\u3001\u7406\u89e3\u53d8\u91cf\u4f5c\u7528\u57df<\/h3>\n<\/p>\n

      \u53d8\u91cf\u7684\u4f5c\u7528\u57df\u4e5f\u662fPHP\u7f16\u7a0b\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u6982\u5ff5\u3002\u5728\u4e0d\u540c\u7684\u4f5c\u7528\u57df\u4e2d\uff0c\u540c\u6837\u7684\u53d8\u91cf\u540d\u53ef\u80fd\u6307\u5411\u4e0d\u540c\u7684\u6570\u636e\u5757\u3002\u7406\u89e3\u5168\u5c40\u4f5c\u7528\u57df\u3001\u5c40\u90e8\u4f5c\u7528\u57df\u3001\u9759\u6001\u53d8\u91cf\u4f5c\u7528\u57df\u4ee5\u53ca\u8d85\u5168\u5c40\u53d8\u91cf\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u52a0\u6709\u6548\u5730\u7ba1\u7406\u6570\u636e\u548c\u5185\u5b58\u3002<\/p>\n<\/p>\n

        \n
      • \u5168\u5c40\u4f5c\u7528\u57df<\/strong>\uff1a\u5728\u51fd\u6570\u5916\u5b9a\u4e49\u7684\u53d8\u91cf\u62e5\u6709\u5168\u5c40\u4f5c\u7528\u57df\uff0c\u53ea\u80fd\u5728\u51fd\u6570\u5916\u90e8\u8bbf\u95ee\u3002<\/li>\n
      • \u5c40\u90e8\u4f5c\u7528\u57df<\/strong>\uff1a\u5728\u51fd\u6570\u5185\u5b9a\u4e49\u7684\u53d8\u91cf\u5177\u6709\u5c40\u90e8\u4f5c\u7528\u57df\uff0c\u53ea\u80fd\u5728\u51fd\u6570\u5185\u90e8\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n

        \u638c\u63e1PHP\u53d8\u91cf\u547d\u540d\u7684\u89c4\u5219\u548c\u9650\u5236\u5bf9\u4e8e\u7f16\u5199\u6709\u6548\u3001\u65e0\u8bef\u7684PHP\u4ee3\u7801\u975e\u5e38\u91cd\u8981\u3002\u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u6307\u5bfc\u539f\u5219\u548c\u6700\u4f73\u5b9e\u8df5\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u786e\u4fdd\u4ed6\u4eec\u7684\u4ee3\u7801\u6613\u4e8e\u7406\u89e3\u3001\u7ef4\u62a4\uff0c\u4e14\u80fd\u591f\u65e0\u8bef\u5730\u6267\u884c\u3002<\/p>\n<\/p>\n

        \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

        1. \u54ea\u4e9b\u5b57\u7b26\u4e0d\u80fd\u5728PHP\u53d8\u91cf\u4e2d\u8fdb\u884c\u5b9a\u4e49\uff1f<\/strong>
        \n\u5728PHP\u4e2d\uff0c\u53d8\u91cf\u7684\u547d\u540d\u9075\u5faa\u4e00\u4e9b\u89c4\u5219\u3002\u53d8\u91cf\u540d\u4e0d\u80fd\u4ee5\u6570\u5b57\u5f00\u5934\uff0c\u53ea\u80fd\u4ee5\u5b57\u6bcd\u6216\u4e0b\u5212\u7ebf\u5f00\u5934\u3002\u9664\u4e86\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u4e0b\u5212\u7ebf\u5916\uff0c\u53d8\u91cf\u540d\u4e0d\u80fd\u5305\u542b\u4efb\u4f55\u5176\u4ed6\u7279\u6b8a\u5b57\u7b26\uff0c\u6bd4\u5982\u7a7a\u683c\u3001\u6807\u70b9\u7b26\u53f7\u6216\u8fd0\u7b97\u7b26\u53f7\u3002\u8fd9\u662f\u56e0\u4e3a\u7279\u6b8a\u5b57\u7b26\u5728\u53d8\u91cf\u540d\u4e2d\u4f1a\u88ab\u89e3\u6790\u4e3a\u8bed\u6cd5\u5143\u7d20\uff0c\u4ece\u800c\u5bfc\u81f4\u8bed\u6cd5\u9519\u8bef\u3002\u6240\u4ee5\uff0c\u5f53\u5b9a\u4e49PHP\u53d8\u91cf\u65f6\uff0c\u5e94\u5f53\u786e\u4fdd\u53d8\u91cf\u540d\u53ea\u5305\u542b\u5408\u6cd5\u7684\u5b57\u7b26\u3002<\/p>\n

        2. \u5f53\u8fdb\u884cPHP\u53d8\u91cf\u5b9a\u4e49\u65f6\uff0c\u8981\u907f\u514d\u5305\u542b\u54ea\u4e9b\u5b57\u7b26\uff1f<\/strong>
        \n\u5728PHP\u53d8\u91cf\u540d\u4e2d\uff0c\u4e0d\u80fd\u5305\u542b\u7a7a\u683c\u3001\u6807\u70b9\u7b26\u53f7\u3001\u8fd0\u7b97\u7b26\u53f7\u6216\u5176\u4ed6\u7279\u6b8a\u5b57\u7b26\u3002\u8fd9\u4e9b\u5b57\u7b26\u4f1a\u88ab\u89e3\u6790\u4e3a\u8bed\u6cd5\u5143\u7d20\uff0c\u4ece\u800c\u5bfc\u81f4\u4ee3\u7801\u9519\u8bef\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u5efa\u8bae\u5c06\u53d8\u91cf\u540d\u9650\u5236\u4e3a\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u4e0b\u5212\u7ebf\u7684\u7ec4\u5408\u3002\u53e6\u5916\uff0c\u8fd8\u5e94\u6ce8\u610f\u907f\u514d\u4f7f\u7528PHP\u7684\u4fdd\u7559\u5173\u952e\u5b57\u4f5c\u4e3a\u53d8\u91cf\u540d\uff0c\u4f8b\u5982 if\u3001echo\u3001for \u7b49\u3002<\/p>\n

        3. \u4e3a\u4ec0\u4e48\u5728PHP\u53d8\u91cf\u4e2d\u4e0d\u80fd\u5305\u542b\u7279\u6b8a\u5b57\u7b26\uff1f<\/strong>
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