{"id":47102,"date":"2024-12-02T15:15:29","date_gmt":"2024-12-02T07:15:29","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47102\/"},"modified":"2024-12-02T15:15:29","modified_gmt":"2024-12-02T07:15:29","slug":"php-%e5%87%bd%e6%95%b0%e4%b8%ad%e5%8f%af%e4%bb%a5%e4%bd%bf%e7%94%a8%e5%93%aa%e4%ba%9b%e5%9f%ba%e6%9c%ac%e7%b1%bb%e5%9e%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47102\/","title":{"rendered":"PHP \u51fd\u6570\u4e2d\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u57fa\u672c\u7c7b\u578b\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP \u51fd\u6570\u4e2d\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u57fa\u672c\u7c7b\u578b\uff1f<\/h1>\n<p>\u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\u7c73\u4e91\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aPHP \u51fd\u6570\u4e2d\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u57fa\u672c\u7c7b\u578b\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<p>PHP \u51fd\u6570\u7684\u57fa\u672c\u7c7b\u578b\u5305\u62ec\uff1a\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u3001\u5e03\u5c14\u503c\u3001NULL\u3001\u6570\u7ec4\u548c\u5bf9\u8c61\u3002\u5177\u4f53\u7c7b\u578b\u5982\u4e0b\uff1a\u6574\u6570\uff1a\u8868\u793a\u6574\u6570\u6570\u5b57\u3002\u6d6e\u70b9\u6570\uff1a\u8868\u793a\u5e26\u5c0f\u6570\u70b9\u7684\u6570\u5b57\u3002\u5b57\u7b26\u4e32\uff1a\u8868\u793a\u7531\u5b57\u7b26\u7ec4\u6210\u7684\u5e8f\u5217\u3002\u5e03\u5c14\u503c\uff1a\u8868\u793a true \u6216 false \u7684\u503c\u3002NULL\uff1a\u8868\u793a\u8be5\u503c\u4e0d\u5b58\u5728\u6216\u672a\u77e5\u3002\u6570\u7ec4\uff1a\u8868\u793a\u6709\u5e8f\u4e14\u53ef\u53d8\u7684\u5143\u7d20\u96c6\u5408\u3002\u5bf9\u8c61\uff1a\u8868\u793a\u7528\u6237\u5b9a\u4e49\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5177\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241025\/1729866154671ba9aaf0ec8.jpg\" class=\"aligncenter\" title=\"PHP \u51fd\u6570\u4e2d\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u57fa\u672c\u7c7b\u578b\uff1f\u63d2\u56fe\" alt=\"PHP \u51fd\u6570\u4e2d\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u57fa\u672c\u7c7b\u578b\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u4e2d\u7684\u57fa\u672c\u7c7b\u578b<\/strong><\/p>\n<p>PHP \u51fd\u6570\u53ef\u4ee5\u5904\u7406\u5404\u79cd\u7c7b\u578b\u7684\u6570\u636e\uff0c\u79f0\u4e3a\u57fa\u672c\u7c7b\u578b\u3002\u8fd9\u4e9b\u7c7b\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6574\u6570 (int)<\/strong> &#8211; \u6574\u6570\u6570\u5b57\uff0c\u4f8b\u5982 123\uff0c-456<\/li>\n<li><strong>\u6d6e\u70b9\u6570 (float)<\/strong> &#8211; \u5e26\u5c0f\u6570\u70b9\u7684\u6570\u5b57\uff0c\u4f8b\u5982 12.34\uff0c-5.67<\/li>\n<li><strong>\u5b57\u7b26\u4e32 (string)<\/strong> &#8211; \u7531\u5b57\u7b26\u7ec4\u6210\u7684\u5e8f\u5217\uff0c\u7528\u5f15\u53f7\u62ec\u8d77\u6765\uff0c\u4f8b\u5982 &#8220;Hello World&#8221;\uff0c&#8217;Goodbye&#8217;<\/li>\n<li><strong>\u5e03\u5c14\u503c (bool)<\/strong> &#8211; \u8868\u793a true \u6216 false \u7684\u503c\uff0c\u4f8b\u5982 true\uff0cfalse<\/li>\n<li><strong>NULL<\/strong> &#8211; \u4e00\u4e2a\u7279\u6b8a\u7684\u503c\uff0c\u8868\u793a\u8be5\u503c\u4e0d\u5b58\u5728\u6216\u672a\u77e5\uff0c\u4f8b\u5982 NULL<\/li>\n<li><strong>\u6570\u7ec4 (array)<\/strong> &#8211; \u6709\u5e8f\u4e14\u53ef\u53d8\u7684\u5143\u7d20\u96c6\u5408\uff0c\u7528\u65b9\u62ec\u53f7\u62ec\u8d77\u6765\uff0c\u4f8b\u5982 [1, &#8220;hello&#8221;, 3.14]<\/li>\n<li><strong>\u5bf9\u8c61 (object)<\/strong> &#8211; \u7528\u6237\u5b9a\u4e49\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5b83\u5177\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u4f8b\u5982 new stdClass()<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4e00\u4e2a\u51fd\u6570 <code>calculate_area()<\/code>\uff0c\u5b83\u6839\u636e\u7ed9\u5b9a\u7684\u957f\u5ea6\u548c\u5bbd\u5ea6\u8ba1\u7b97\u77e9\u5f62\u7684\u9762\u79ef\uff1a<\/p>\n<pre>function calculate_area(int $length, int $width): float {\n  return $length * $width;\n}\n\n\/\/ \u8c03\u7528\u51fd\u6570\n$length = 10;\n$width = 5;\n$area = calculate_area($length, $width);\n\necho \"\u77e9\u5f62\u7684\u9762\u79ef\uff1a$area\";<\/pre>\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u51fd\u6570 <code>calculate_area()<\/code> \u63a5\u53d7\u4e24\u4e2a\u6574\u6570\u53c2\u6570\uff08<code>$length<\/code> \u548c <code>$width<\/code>\uff09\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u6d6e\u70b9\u6570\uff08\u9762\u79ef\uff09\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300aPHP \u51fd\u6570\u4e2d\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u57fa\u672c\u7c7b\u578b\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u51fd\u6570\u4e2d\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u57fa\u672c\u7c7b\u578b\uff1f \u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\u7c73\u4e91\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u300aPHP \u51fd\u6570\u4e2d\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u57fa\u672c\u7c7b\u578b\uff1f\u300b\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9\u6587\u7ae0\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01 PHP \u51fd\u6570\u7684\u57fa\u672c\u7c7b\u578b\u5305\u62ec\uff1a\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u3001\u5e03\u5c14\u503c\u3001NULL\u3001\u6570\u7ec4\u548c\u5bf9\u8c61\u3002\u5177\u4f53\u7c7b\u578b\u5982\u4e0b\uff1a\u6574\u6570\uff1a\u8868\u793a\u6574\u6570\u6570\u5b57\u3002\u6d6e\u70b9\u6570\uff1a\u8868\u793a\u5e26\u5c0f\u6570\u70b9\u7684\u6570\u5b57\u3002\u5b57\u7b26\u4e32\uff1a\u8868\u793a\u7531\u5b57\u7b26\u7ec4\u6210\u7684\u5e8f\u5217\u3002\u5e03\u5c14\u503c\uff1a\u8868\u793a true \u6216 false \u7684\u503c\u3002NULL\uff1a\u8868\u793a\u8be5\u503c\u4e0d\u5b58\u5728\u6216\u672a\u77e5\u3002\u6570\u7ec4\uff1a\u8868\u793a\u6709\u5e8f\u4e14\u53ef\u53d8\u7684\u5143\u7d20\u96c6\u5408\u3002\u5bf9\u8c61\uff1a\u8868\u793a\u7528\u6237\u5b9a\u4e49\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5177\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\u3002 PHP \u51fd\u6570\u4e2d\u7684\u57fa\u672c\u7c7b\u578b PHP \u51fd\u6570\u53ef\u4ee5\u5904\u7406\u5404\u79cd\u7c7b\u578b\u7684\u6570\u636e\uff0c\u79f0\u4e3a\u57fa\u672c\u7c7b\u578b\u3002\u8fd9\u4e9b\u7c7b\u578b\u5305\u62ec\uff1a \u6574\u6570 (int) &#8211; \u6574\u6570\u6570\u5b57\uff0c\u4f8b\u5982 123\uff0c-456 \u6d6e\u70b9\u6570 (float) &#8211; \u5e26\u5c0f\u6570\u70b9\u7684\u6570\u5b57\uff0c\u4f8b\u5982 12.34\uff0c-5.67 \u5b57\u7b26\u4e32 (string) &#8211; \u7531\u5b57\u7b26\u7ec4\u6210\u7684\u5e8f\u5217\uff0c\u7528\u5f15\u53f7\u62ec\u8d77\u6765\uff0c\u4f8b\u5982 &#8220;Hello World&#8221;\uff0c&#8217;Goodbye&#8217; \u5e03\u5c14\u503c (bool) &#8211; \u8868\u793a true \u6216 false \u7684\u503c\uff0c\u4f8b\u5982 true\uff0cfalse NULL &#8211; \u4e00\u4e2a\u7279\u6b8a\u7684\u503c\uff0c\u8868\u793a\u8be5\u503c\u4e0d\u5b58\u5728\u6216\u672a\u77e5\uff0c\u4f8b\u5982 NULL \u6570\u7ec4 (array) &#8211; \u6709\u5e8f\u4e14\u53ef\u53d8\u7684\u5143\u7d20\u96c6\u5408\uff0c\u7528\u65b9\u62ec\u53f7\u62ec\u8d77\u6765\uff0c\u4f8b\u5982 [1, &#8220;hello&#8221;, 3.14] \u5bf9\u8c61 (object) &#8211; \u7528\u6237\u5b9a\u4e49\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5b83\u5177\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u4f8b\u5982 new [&hellip;]<\/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-47102","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47102","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=47102"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47102\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}