{"id":46807,"date":"2024-12-02T09:26:07","date_gmt":"2024-12-02T01:26:07","guid":{"rendered":"https:\/\/fwq.ai\/blog\/46807\/"},"modified":"2024-12-02T09:26:07","modified_gmt":"2024-12-02T01:26:07","slug":"php-%e5%87%bd%e6%95%b0%e4%b8%ad%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e9%80%92%e5%bd%92%e6%9d%a5%e8%ae%a1%e7%ae%97%e6%95%b0%e5%ad%a6%e8%a1%a8%e8%be%be%e5%bc%8f%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/46807\/","title":{"rendered":"PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u9012\u5f52\u6765\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u9012\u5f52\u6765\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1f<\/h1>\n

\u7c73\u4e91\u4eca\u5929\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u9012\u5f52\u6765\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1f\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u662f\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\u6216\u8005\u5df2\u7ecf\u662f\u5927\u4f6c\u7ea7\u522b\u4e86\uff0c\u90fd\u975e\u5e38\u6b22\u8fce\u4e5f\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u7ed9\u6211\u5efa\u8bae\u8bc4\u8bba\u54c8~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff01<\/p>\n

\u4f7f\u7528\u9012\u5f52\u7684 PHP \u51fd\u6570\u53ef\u4ee5\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1a\u89e3\u6790\u8868\u8fbe\u5f0f\uff0c\u62c6\u5206\u4e3a\u64cd\u4f5c\u6570\u548c\u8fd0\u7b97\u7b26\u3002\u6839\u636e\u8fd0\u7b97\u7b26\u6267\u884c\u8ba1\u7b97\uff0c\u5305\u62ec\u52a0\u3001\u51cf\u3001\u4e58\u3001\u9664\u3002\u9012\u5f52\u8c03\u7528\u51fd\u6570\u8ba1\u7b97\u5b50\u8868\u8fbe\u5f0f\u3002\u8fd4\u56de\u6700\u7ec8\u7ed3\u679c\u3002<\/p>\n

\"PHP<\/p>\n

\u4f7f\u7528\u9012\u5f52\u5728 PHP \u51fd\u6570\u4e2d\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f<\/strong><\/p>\n

\u5f15\u8a00<\/strong><\/p>\n

\u9012\u5f52\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u7f16\u7a0b\u6280\u672f\uff0c\u5b83\u4f7f\u51fd\u6570\u80fd\u591f\u8c03\u7528\u81ea\u8eab\u3002\u8fd9\u5728\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\u65f6\u975e\u5e38\u6709\u7528\uff0c\u56e0\u4e3a\u8bb8\u591a\u8868\u8fbe\u5f0f\u90fd\u5177\u6709\u9012\u5f52\u7ed3\u6784\u3002<\/p>\n

\u9012\u5f52\u51fd\u6570<\/strong><\/p>\n

\u4ee5\u4e0b PHP \u51fd\u6570\u53ef\u4ee5\u9012\u5f52\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1a<\/p>\n

function calculate($expression) {\n  \/\/ \u5c06\u8868\u8fbe\u5f0f\u62c6\u5206\u4e3a\u8fd0\u7b97\u7b26\u548c\u64cd\u4f5c\u6570\n  $parts = explode(' ', $expression);\n\n  \/\/ \u83b7\u53d6\u8fd0\u7b97\u7b26\n  $operator = $parts[1];\n\n  \/\/ \u83b7\u53d6\u64cd\u4f5c\u6570\n  $operands = [$parts[0], $parts[2]];\n\n  \/\/ \u6839\u636e\u8fd0\u7b97\u7b26\u6267\u884c\u8ba1\u7b97\n  switch ($operator) {\n    case '+':\n      return $operands[0] + $operands[1];\n    case '-':\n      return $operands[0] - $operands[1];\n    case '*':\n      return $operands[0] * $operands[1];\n    case '\/':\n      return $operands[0] \/ $operands[1];\n  }\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u6b64\u51fd\u6570\u8ba1\u7b97\u8868\u8fbe\u5f0f 1 + 2 * 3<\/code> \u7684\u793a\u4f8b\uff1a<\/p>\n
$expression = '1 + 2 * 3';\n$result = calculate($expression);\n\necho \"\u8ba1\u7b97\u7ed3\u679c\uff1a$result\";<\/pre>\n
\u8f93\u51fa\uff1a<\/p>\n
\u8ba1\u7b97\u7ed3\u679c\uff1a7<\/pre>\n
\u7ed3\u8bba<\/strong><\/p>\n
\u901a\u8fc7\u4f7f\u7528\u9012\u5f52\uff0c\u6211\u4eec\u53ef\u4ee5\u7f16\u5199\u51fa\u4e00\u4e2a\u901a\u7528\u7684 PHP \u51fd\u6570\u6765\u8ba1\u7b97\u5404\u79cd\u6570\u5b66\u8868\u8fbe\u5f0f\u3002\u8fd9\u4f7f\u5f97\u6211\u4eec\u5728\u590d\u6742\u7684\u8ba1\u7b97\u573a\u666f\u4e2d\u53ef\u4ee5\u8f7b\u677e\u9ad8\u6548\u5730\u6c42\u89e3\u8868\u8fbe\u5f0f\u3002<\/p>\n
\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u9012\u5f52\u6765\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u7c73\u4e91\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u9012\u5f52\u6765\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1f \u7c73\u4e91\u4eca\u5929\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u9012\u5f52\u6765\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1f\u300b\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u662f\u6b63\u5728\u5b66\u4e60\u6587\u7ae0\u6216\u8005\u5df2\u7ecf\u662f\u5927\u4f6c\u7ea7\u522b\u4e86\uff0c\u90fd\u975e\u5e38\u6b22\u8fce\u4e5f\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u7ed9\u6211\u5efa\u8bae\u8bc4\u8bba\u54c8~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff01 \u4f7f\u7528\u9012\u5f52\u7684 PHP \u51fd\u6570\u53ef\u4ee5\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1a\u89e3\u6790\u8868\u8fbe\u5f0f\uff0c\u62c6\u5206\u4e3a\u64cd\u4f5c\u6570\u548c\u8fd0\u7b97\u7b26\u3002\u6839\u636e\u8fd0\u7b97\u7b26\u6267\u884c\u8ba1\u7b97\uff0c\u5305\u62ec\u52a0\u3001\u51cf\u3001\u4e58\u3001\u9664\u3002\u9012\u5f52\u8c03\u7528\u51fd\u6570\u8ba1\u7b97\u5b50\u8868\u8fbe\u5f0f\u3002\u8fd4\u56de\u6700\u7ec8\u7ed3\u679c\u3002 \u4f7f\u7528\u9012\u5f52\u5728 PHP \u51fd\u6570\u4e2d\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f \u5f15\u8a00 \u9012\u5f52\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u7f16\u7a0b\u6280\u672f\uff0c\u5b83\u4f7f\u51fd\u6570\u80fd\u591f\u8c03\u7528\u81ea\u8eab\u3002\u8fd9\u5728\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\u65f6\u975e\u5e38\u6709\u7528\uff0c\u56e0\u4e3a\u8bb8\u591a\u8868\u8fbe\u5f0f\u90fd\u5177\u6709\u9012\u5f52\u7ed3\u6784\u3002 \u9012\u5f52\u51fd\u6570 \u4ee5\u4e0b PHP \u51fd\u6570\u53ef\u4ee5\u9012\u5f52\u8ba1\u7b97\u6570\u5b66\u8868\u8fbe\u5f0f\uff1a function calculate($expression) { \/\/ \u5c06\u8868\u8fbe\u5f0f\u62c6\u5206\u4e3a\u8fd0\u7b97\u7b26\u548c\u64cd\u4f5c\u6570 $parts = explode(‘ ‘, $expression); \/\/ \u83b7\u53d6\u8fd0\u7b97\u7b26 $operator = $parts[1]; \/\/ \u83b7\u53d6\u64cd\u4f5c\u6570 $operands = [$parts[0], $parts[2]]; \/\/ \u6839\u636e\u8fd0\u7b97\u7b26\u6267\u884c\u8ba1\u7b97 switch ($operator) { case ‘+’: return $operands[0] + $operands[1]; case ‘-‘: return $operands[0] – $operands[1]; case […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-46807","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46807","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=46807"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46807\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=46807"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=46807"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=46807"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}