{"id":47577,"date":"2024-12-02T11:58:36","date_gmt":"2024-12-02T03:58:36","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47577\/"},"modified":"2024-12-02T11:58:36","modified_gmt":"2024-12-02T03:58:36","slug":"php-%e5%87%bd%e6%95%b0%e5%a6%82%e4%bd%95%e5%a4%84%e7%90%86%e4%bb%a3%e7%a0%81%e4%b8%ad%e7%9a%84%e9%80%bb%e8%be%91%e9%94%99%e8%af%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47577\/","title":{"rendered":"PHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1f<\/h1>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aPHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1f\u300b<\/span>\u4e3b\u8981\u8bb2\u89e3\u4e86<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u7c73\u4e91\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p>\u901a\u8fc7 PHP \u51fd\u6570\u5904\u7406\u4ee3\u7801\u903b\u8f91\u9519\u8befPHP \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u51fd\u6570\u6765\u68c0\u67e5\u53d8\u91cf\u7c7b\u578b\uff1ais_bool()is_null()is_numeric()is_string()is_array()\u8fd9\u4e9b\u51fd\u6570\u6709\u52a9\u4e8e\u5728\u8fd0\u884c\u65f6\u9a8c\u8bc1\u53d8\u91cf\uff0c\u4ece\u800c\u907f\u514d\u903b\u8f91\u9519\u8bef\u3002\u6b64\u5916\uff0cassert() \u51fd\u6570\u53ef\u65ad\u8a00\u6761\u4ef6\u4e3a\u771f\uff0c\u5426\u5219\u89e6\u53d1\u9519\u8bef\uff0c\u4e3a\u5f00\u53d1\u8005\u63d0\u4f9b\u65e9\u671f\u9519\u8bef\u68c0\u6d4b\u673a\u5236\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729924166671c8c467bf6f.jpg\" class=\"aligncenter\" title=\"PHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1f\u63d2\u56fe\" alt=\"PHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u5904\u7406\u4ee3\u7801\u4e2d\u903b\u8f91\u9519\u8bef<\/strong><\/p>\n<p><strong>\u7b80\u4ecb<\/strong><\/p>\n<p>\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\u901a\u5e38\u662f\u7531\u7a0b\u5e8f\u5458\u7684\u9519\u8bef\u63a8\u65ad\u6216\u5047\u8bbe\u800c\u5f15\u8d77\u7684\u3002\u8fd9\u4e9b\u9519\u8bef\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u4ea7\u751f\u610f\u5916\u7684\u7ed3\u679c\u6216\u5d29\u6e83\u3002<\/p>\n<p><strong>PHP \u51fd\u6570<\/strong><\/p>\n<p>PHP \u63d0\u4f9b\u4e86\u51e0\u4e2a\u51fd\u6570\u6765\u5e2e\u52a9\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1a<\/p>\n<ul>\n<li><strong>is_bool()\uff1a<\/strong> \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u5e03\u5c14\u503c\u3002<\/li>\n<li><strong>is_null()\uff1a<\/strong> \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a null \u503c\u3002<\/li>\n<li><strong>is_numeric()\uff1a<\/strong> \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u6570\u5b57\u3002<\/li>\n<li><strong>is_string()\uff1a<\/strong> \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u5b57\u7b26\u4e32\u3002<\/li>\n<li><strong>is_array()\uff1a<\/strong> \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u6570\u7ec4\u3002<\/li>\n<li><strong>assert()\uff1a<\/strong> \u65ad\u8a00\u67d0\u4e2a\u6761\u4ef6\u4e3a\u771f\uff0c\u5982\u679c\u4e0d\u4e3a\u771f\u5219\u89e6\u53d1\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u4ee3\u7801\u6f14\u793a\u4e86\u5982\u4f55\u4f7f\u7528 is_numeric() \u51fd\u6570\u6765\u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u6570\u5b57\uff1a<\/p>\n<pre>&lt;?php\n\n$value = '123';\n\nif (is_numeric($value)) {\n  \/\/ $value \u662f\u4e00\u4e2a\u6570\u5b57\n} else {\n  \/\/ $value \u4e0d\u662f\u4e00\u4e2a\u6570\u5b57\n}<\/pre>\n<p><strong>\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<ul>\n<li>\u5728\u5c06\u53d8\u91cf\u4f20\u9012\u7ed9\u51fd\u6570\u6216\u6267\u884c\u67d0\u4e9b\u64cd\u4f5c\u4e4b\u524d\uff0c\u4f7f\u7528 PHP \u51fd\u6570\u68c0\u67e5\u53d8\u91cf\u7684\u7c7b\u578b\u3002<\/li>\n<li>\u4f7f\u7528 assert() \u51fd\u6570\u6765\u786e\u4fdd\u67d0\u4e2a\u6761\u4ef6\u4e3a\u771f\uff0c\u8fd9\u6709\u52a9\u4e8e\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u53ca\u65e9\u53d1\u73b0\u903b\u8f91\u9519\u8bef\u3002<\/li>\n<li>\u5728\u51fa\u73b0\u903b\u8f91\u9519\u8bef\u65f6\uff0c\u4f7f\u7528\u8c03\u8bd5\u5668\uff08\u5982 Xdebug\uff09\u53ef\u4ee5\u5e2e\u52a9\u8ddf\u8e2a\u9519\u8bef\u7684\u6765\u6e90\u3002<\/li>\n<li>\u7f16\u5199\u5355\u5143\u6d4b\u8bd5\u53ef\u4ee5\u5e2e\u52a9\u9a8c\u8bc1\u4ee3\u7801\u7684\u884c\u4e3a\u5e76\u68c0\u6d4b\u903b\u8f91\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300aPHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8ephp,\u903b\u8f91\u9519\u8bef\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1f \u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587\u300aPHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1f\u300b\u4e3b\u8981\u8bb2\u89e3\u4e86\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u7c73\u4e91\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01 \u901a\u8fc7 PHP \u51fd\u6570\u5904\u7406\u4ee3\u7801\u903b\u8f91\u9519\u8befPHP \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u51fd\u6570\u6765\u68c0\u67e5\u53d8\u91cf\u7c7b\u578b\uff1ais_bool()is_null()is_numeric()is_string()is_array()\u8fd9\u4e9b\u51fd\u6570\u6709\u52a9\u4e8e\u5728\u8fd0\u884c\u65f6\u9a8c\u8bc1\u53d8\u91cf\uff0c\u4ece\u800c\u907f\u514d\u903b\u8f91\u9519\u8bef\u3002\u6b64\u5916\uff0cassert() \u51fd\u6570\u53ef\u65ad\u8a00\u6761\u4ef6\u4e3a\u771f\uff0c\u5426\u5219\u89e6\u53d1\u9519\u8bef\uff0c\u4e3a\u5f00\u53d1\u8005\u63d0\u4f9b\u65e9\u671f\u9519\u8bef\u68c0\u6d4b\u673a\u5236\u3002 PHP \u51fd\u6570\u5904\u7406\u4ee3\u7801\u4e2d\u903b\u8f91\u9519\u8bef \u7b80\u4ecb \u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\u901a\u5e38\u662f\u7531\u7a0b\u5e8f\u5458\u7684\u9519\u8bef\u63a8\u65ad\u6216\u5047\u8bbe\u800c\u5f15\u8d77\u7684\u3002\u8fd9\u4e9b\u9519\u8bef\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u4ea7\u751f\u610f\u5916\u7684\u7ed3\u679c\u6216\u5d29\u6e83\u3002 PHP \u51fd\u6570 PHP \u63d0\u4f9b\u4e86\u51e0\u4e2a\u51fd\u6570\u6765\u5e2e\u52a9\u5904\u7406\u4ee3\u7801\u4e2d\u7684\u903b\u8f91\u9519\u8bef\uff1a is_bool()\uff1a \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u5e03\u5c14\u503c\u3002 is_null()\uff1a \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a null \u503c\u3002 is_numeric()\uff1a \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u6570\u5b57\u3002 is_string()\uff1a \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u5b57\u7b26\u4e32\u3002 is_array()\uff1a \u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u6570\u7ec4\u3002 assert()\uff1a \u65ad\u8a00\u67d0\u4e2a\u6761\u4ef6\u4e3a\u771f\uff0c\u5982\u679c\u4e0d\u4e3a\u771f\u5219\u89e6\u53d1\u9519\u8bef\u3002 \u5b9e\u6218\u6848\u4f8b \u4ee5\u4e0b\u4ee3\u7801\u6f14\u793a\u4e86\u5982\u4f55\u4f7f\u7528 is_numeric() \u51fd\u6570\u6765\u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3a\u6570\u5b57\uff1a &lt;?php $value = &#8216;123&#8217;; if (is_numeric($value)) { \/\/ $value \u662f\u4e00\u4e2a\u6570\u5b57 } else { \/\/ $value \u4e0d\u662f\u4e00\u4e2a\u6570\u5b57 } \u6700\u4f73\u5b9e\u8df5 \u5728\u5c06\u53d8\u91cf\u4f20\u9012\u7ed9\u51fd\u6570\u6216\u6267\u884c\u67d0\u4e9b\u64cd\u4f5c\u4e4b\u524d\uff0c\u4f7f\u7528 PHP [&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-47577","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47577","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=47577"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47577\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}