{"id":46895,"date":"2024-12-02T09:38:09","date_gmt":"2024-12-02T01:38:09","guid":{"rendered":"https:\/\/fwq.ai\/blog\/46895\/"},"modified":"2024-12-02T09:38:09","modified_gmt":"2024-12-02T01:38:09","slug":"php-%e5%87%bd%e6%95%b0%e4%b8%ad%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e7%b1%bb%e5%9e%8b%e5%bc%ba%e5%88%b6%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/46895\/","title":{"rendered":"PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\uff1f<\/h1>\n<p>\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728\u6587\u7ae0\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n<p>PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\u53ef\u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u7279\u5b9a\u6570\u636e\u7c7b\u578b\uff0c\u5177\u4f53\u51fd\u6570\u5305\u62ec\uff1aintval()\uff1a\u8f6c\u6362\u4e3a\u6574\u6570floatval()\uff1a\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570strval()\uff1a\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32boolval()\uff1a\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241025\/1729852904671b75e814694.jpg\" class=\"aligncenter\" title=\"PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\uff1f\u63d2\u56fe\" alt=\"PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236<\/strong><\/p>\n<p>\u7c7b\u578b\u5f3a\u5236\u662f\u4e00\u79cd\u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u7279\u5b9a\u6570\u636e\u7c7b\u578b\u7684\u64cd\u4f5c\u3002\u5728 PHP \u4e2d\uff0c\u6709\u51e0\u79cd\u5185\u7f6e\u51fd\u6570\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u578b\u5f3a\u5236\uff1a<\/p>\n<ul>\n<li><strong>intval()\uff1a<\/strong> \u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u6574\u6570\u3002<\/li>\n<li><strong>floatval()\uff1a<\/strong> \u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\u3002<\/li>\n<li><strong>strval()\uff1a<\/strong> \u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/li>\n<li><strong>boolval()\uff1a<\/strong> \u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u5047\u8bbe\u6709\u4e00\u4e2a\u5b57\u7b26\u4e32\u53d8\u91cf <code>$string<\/code>\uff0c\u6211\u4eec\u9700\u8981\u5c06\u5176\u8f6c\u6362\u4e3a\u6574\u6570\uff1a<\/p>\n<pre>$string = \"123\";\n$integer = intval($string); \/\/ $integer \u73b0\u5728\u4e3a 123<\/pre>\n<p><strong>\u7528\u6cd5\uff1a<\/strong><\/p>\n<p>\u8fd9\u4e9b\u51fd\u6570\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>intval(variable)\nfloatval(variable)\nstrval(variable)\nboolval(variable)<\/pre>\n<p>\u5176\u4e2d\uff0c<code>variable<\/code> \u662f\u8981\u5f3a\u5236\u8f6c\u6362\u7684\u53d8\u91cf\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u7c7b\u578b\u5f3a\u5236\u4ec5\u4f1a\u6539\u53d8\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u4e0d\u4f1a\u6539\u53d8\u53d8\u91cf\u7684\u503c\u3002<\/li>\n<li>\u5982\u679c\u5f3a\u5236\u8f6c\u6362\u5931\u8d25\uff0c\u51fd\u6570\u53ef\u80fd\u8fd4\u56de <code>NULL<\/code> \u6216\u5176\u4ed6\u6307\u5b9a\u7684\u9ed8\u8ba4\u503c\u3002<\/li>\n<li><code>boolval()<\/code> \u51fd\u6570\u5c06\u7a7a\u5b57\u7b26\u4e32\u30010 \u548c <code>false<\/code> \u8f6c\u6362\u4e3a <code>false<\/code>\uff0c\u800c\u5c06\u5176\u4ed6\u6240\u6709\u503c\u8f6c\u6362\u4e3a <code>true<\/code>\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8ePHP \u51fd\u6570,\u7c7b\u578b\u5f3a\u5236\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\uff1f \u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728\u6587\u7ae0\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~ PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\u53ef\u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u7279\u5b9a\u6570\u636e\u7c7b\u578b\uff0c\u5177\u4f53\u51fd\u6570\u5305\u62ec\uff1aintval()\uff1a\u8f6c\u6362\u4e3a\u6574\u6570floatval()\uff1a\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570strval()\uff1a\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32boolval()\uff1a\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236 \u7c7b\u578b\u5f3a\u5236\u662f\u4e00\u79cd\u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u7279\u5b9a\u6570\u636e\u7c7b\u578b\u7684\u64cd\u4f5c\u3002\u5728 PHP \u4e2d\uff0c\u6709\u51e0\u79cd\u5185\u7f6e\u51fd\u6570\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u578b\u5f3a\u5236\uff1a intval()\uff1a \u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u6574\u6570\u3002 floatval()\uff1a \u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\u3002 strval()\uff1a \u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002 boolval()\uff1a \u5c06\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u3002 \u5b9e\u6218\u6848\u4f8b\uff1a \u5047\u8bbe\u6709\u4e00\u4e2a\u5b57\u7b26\u4e32\u53d8\u91cf $string\uff0c\u6211\u4eec\u9700\u8981\u5c06\u5176\u8f6c\u6362\u4e3a\u6574\u6570\uff1a $string = &#8220;123&#8221;; $integer = intval($string); \/\/ $integer \u73b0\u5728\u4e3a 123 \u7528\u6cd5\uff1a \u8fd9\u4e9b\u51fd\u6570\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a intval(variable) floatval(variable) strval(variable) boolval(variable) \u5176\u4e2d\uff0cvariable \u662f\u8981\u5f3a\u5236\u8f6c\u6362\u7684\u53d8\u91cf\u3002 \u6ce8\u610f\uff1a \u7c7b\u578b\u5f3a\u5236\u4ec5\u4f1a\u6539\u53d8\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u4e0d\u4f1a\u6539\u53d8\u53d8\u91cf\u7684\u503c\u3002 \u5982\u679c\u5f3a\u5236\u8f6c\u6362\u5931\u8d25\uff0c\u51fd\u6570\u53ef\u80fd\u8fd4\u56de NULL \u6216\u5176\u4ed6\u6307\u5b9a\u7684\u9ed8\u8ba4\u503c\u3002 boolval() \u51fd\u6570\u5c06\u7a7a\u5b57\u7b26\u4e32\u30010 \u548c false \u8f6c\u6362\u4e3a false\uff0c\u800c\u5c06\u5176\u4ed6\u6240\u6709\u503c\u8f6c\u6362\u4e3a true\u3002 \u4ee5\u4e0a\u5c31\u662f\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u7c7b\u578b\u5f3a\u5236\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8ePHP \u51fd\u6570,\u7c7b\u578b\u5f3a\u5236\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/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-46895","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46895","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=46895"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46895\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=46895"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=46895"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=46895"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}