{"id":22881,"date":"2024-11-21T09:31:21","date_gmt":"2024-11-21T01:31:21","guid":{"rendered":"https:\/\/fwq.ai\/blog\/22881\/"},"modified":"2024-11-21T09:31:21","modified_gmt":"2024-11-21T01:31:21","slug":"laravel%e6%95%b0%e7%bb%84%e6%98%af%e5%90%a6%e5%8c%85%e5%90%ab%e4%b8%8b%e6%a0%87","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/22881\/","title":{"rendered":"laravel\u6570\u7ec4\u662f\u5426\u5305\u542b\u4e0b\u6807"},"content":{"rendered":"<p>\u5728 laravel \u4e2d\uff0c\u6570\u7ec4\u662f\u5f88\u5e38\u89c1\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5f88\u591a\u60c5\u51b5\u4e0b\u6211\u4eec\u9700\u8981\u5224\u65ad\u4e00\u4e2a\u6570\u7ec4\u662f\u5426\u5305\u542b\u67d0\u4e2a\u4e0b\u6807\u3002\u8fd9\u4e2a\u95ee\u9898\u770b\u4f3c\u7b80\u5355\uff0c\u4f46\u5982\u679c\u4e0d\u4e86\u89e3 laravel \u4e2d\u7684\u8be6\u7ec6\u5b9e\u73b0\uff0c\u5c31\u5f88\u5bb9\u6613\u72af\u9519\u3002\u672c\u6587\u5c06\u4ecb\u7ecd laravel \u4e2d\u5982\u4f55\u5224\u65ad\u6570\u7ec4\u662f\u5426\u5305\u542b\u4e0b\u6807\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e0b PHP \u4e2d\u7684\u6570\u7ec4\u5224\u65ad\u65b9\u5f0f\u3002\u5728 PHP \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 isset() \u6216 array_key_exists() \u51fd\u6570\u6765\u5224\u65ad\u6570\u7ec4\u662f\u5426\u5305\u542b\u67d0\u4e2a\u4e0b\u6807\u3002\u5b83\u4eec\u7684\u4f7f\u7528\u65b9\u5f0f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>$array = ['name' =&amp;gt; 'John', 'age' =&amp;gt; 30];\n\n\/\/ \u4f7f\u7528isset()\u51fd\u6570\u5224\u65ad\u6570\u7ec4\u662f\u5426\u5305\u542b\u4e0b\u6807\nif (isset($array['name'])) {\n    echo 'Name is set.';\n} else {\n    echo 'Name is not set.';\n}\n\n\/\/ \u4f7f\u7528array_key_exists()\u51fd\u6570\u5224\u65ad\u6570\u7ec4\u662f\u5426\u5305\u542b\u4e0b\u6807\nif (array_key_exists('age', $array)) {\n    echo 'Age is set.';\n} else {\n    echo 'Age is not set.';\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u4e24\u4e2a\u51fd\u6570\u90fd\u662f PHP \u4e2d\u5e38\u89c1\u7684\u64cd\u4f5c\u6570\u7ec4\u7684\u65b9\u5f0f\u3002\u7136\u800c\uff0c\u5728 Laravel \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u66f4\u4e3a\u7b80\u5355\u7684\u8bed\u6cd5\u6765\u5224\u65ad\u6570\u7ec4\u662f\u5426\u5305\u542b\u4e0b\u6807\u3002<\/p>\n<p>\u5728 Laravel \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 isset() \u8fdb\u884c\u6570\u7ec4\u4e0b\u6807\u5224\u65ad\uff0c\u4f46\u662f\u66f4\u52a0\u63a8\u8350\u4f7f\u7528 array_key_exists() \u51fd\u6570\u3002 array_key_exists() \u51fd\u6570\u53ef\u4ee5\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u9700\u8981\u5224\u65ad\u7684\u4e0b\u6807\u540d\u79f0\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u5219\u662f\u9700\u8981\u8fdb\u884c\u5224\u65ad\u7684\u6570\u7ec4\u3002\u5176\u4f7f\u7528\u65b9\u5f0f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>$array = ['name' =&amp;gt; 'John', 'age' =&amp;gt; 30];\n\nif (array_key_exists('name', $array)) {\n    echo 'Name is set.';\n} else {\n    echo 'Name is not set.';\n}\n\nif (array_key_exists('email', $array)) {\n    echo 'Email is set.';\n} else {\n    echo 'Email is not set.';\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u6839\u636e\u4e0a\u8ff0\u4ee3\u7801\uff0c\u5982\u679c $array \u6570\u7ec4\u5305\u542b name \u4e0b\u6807\uff0c\u5219\u8f93\u51fa\u201cName is set.\u201d\uff0c\u5426\u5219\u8f93\u51fa\u201cName is not set.\u201d\u3002\u540c\u6837\u5730\uff0c\u5982\u679c $array \u6570\u7ec4\u4e0d\u5305\u542b email \u4e0b\u6807\uff0c\u5219\u8f93\u51fa\u201cEmail is not set.\u201d\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4f7f\u7528 array_key_exists() \u51fd\u6570\u9700\u8981\u6ce8\u610f\u4e0b\u6807\u7684\u7c7b\u578b\u3002\u5982\u679c\u4e0b\u6807\u662f\u4e00\u4e2a\u7a7a\u503c null\uff0c\u90a3\u4e48\u8be5\u51fd\u6570\u5c06\u8fd4\u56de false \u5e76\u4ea7\u751f\u4e00\u4e2a E_WARNING \u7ea7\u522b\u7684\u9519\u8bef\u3002\u53e6\u5916\uff0c\u5982\u679c\u9700\u8981\u5224\u65ad\u7684\u4e0b\u6807\u662f\u6570\u5b57\uff0c\u90a3\u4e48\u5728\u4f7f\u7528 isset() \u51fd\u6570\u65f6\u7684\u5224\u65ad\u6761\u4ef6\u4f1a\u5341\u5206\u7684\u4e25\u683c\uff0c\u9700\u8981\u540c\u65f6\u5224\u65ad\u4e0b\u6807\u5b58\u5728\u5e76\u4e14\u5176\u5bf9\u5e94\u7684\u503c\u4e0d\u662f null\u3002<\/p>\n<p>\u6700\u540e\uff0c\u9700\u8981\u63d0\u9192\u5927\u5bb6\u7684\u662f\uff0c\u5728\u4f7f\u7528\u6570\u7ec4\u65f6\u5e94\u8be5\u5c3d\u53ef\u80fd\u907f\u514d\u51fa\u73b0\u672a\u5b9a\u4e49\u7684\u4e0b\u6807\u3002\u5982\u679c\u6570\u7ec4\u4e0b\u6807\u4f7f\u7528\u4e0d\u5f53\uff0c\u5c06\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u8fd0\u884c\u65f6\u51fa\u73b0\u9519\u8bef\uff0c\u751a\u81f3\u53ef\u80fd\u5f15\u8d77\u5b89\u5168\u9690\u60a3\u3002\u56e0\u6b64\uff0c\u6b63\u786e\u7684\u65b9\u6cd5\u662f\u5728\u4f7f\u7528\u6570\u7ec4\u524d\uff0c\u5c3d\u91cf\u786e\u4fdd\u6570\u7ec4\u4e0b\u6807\u90fd\u662f\u53ef\u7528\u7684\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\u6211\u4eec\u4ecb\u7ecd\u4e86 Laravel \u4e2d\u6570\u7ec4\u5224\u65ad\u4e0b\u6807\u662f\u5426\u5b58\u5728\u7684\u65b9\u6cd5\uff0c\u5176\u4e2d array_key_exists() \u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u800c\u4e14\u6bd4 isset() \u66f4\u52a0\u7075\u6d3b\u548c\u5b89\u5168\uff0c\u80fd\u591f\u66f4\u597d\u7684\u9002\u5e94 Laravel \u7684\u4ee3\u7801\u89c4\u8303\u548c\u7a0b\u5e8f\u8bbe\u8ba1\u4e60\u60ef\u3002\u6211\u4eec\u5e0c\u671b\u8bfb\u8005\u4eec\u5728\u5f00\u53d1 Laravel \u5e94\u7528\u7a0b\u5e8f\u65f6\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u6765\u5224\u65ad\u6570\u7ec4\u4e0b\u6807\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662flaravel\u6570\u7ec4\u662f\u5426\u5305\u542b\u4e0b\u6807\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 laravel \u4e2d\uff0c\u6570\u7ec4\u662f\u5f88\u5e38\u89c1\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5f88\u591a\u60c5\u51b5\u4e0b\u6211\u4eec\u9700\u8981\u5224\u65ad\u4e00\u4e2a\u6570\u7ec4\u662f\u5426\u5305\u542b\u67d0\u4e2a\u4e0b\u6807\u3002\u8fd9\u4e2a\u95ee\u9898\u770b\u4f3c\u7b80\u5355\uff0c\u4f46\u5982\u679c\u4e0d\u4e86\u89e3 laravel \u4e2d\u7684\u8be6\u7ec6\u5b9e\u73b0\uff0c\u5c31\u5f88\u5bb9\u6613\u72af\u9519\u3002\u672c\u6587\u5c06\u4ecb\u7ecd laravel \u4e2d\u5982\u4f55\u5224\u65ad\u6570\u7ec4\u662f\u5426\u5305\u542b\u4e0b\u6807\u3002 \u9996\u5148\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e0b PHP \u4e2d\u7684\u6570\u7ec4\u5224\u65ad\u65b9\u5f0f\u3002\u5728 PHP \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 isset() \u6216 array_key_exists() \u51fd\u6570\u6765\u5224\u65ad\u6570\u7ec4\u662f\u5426\u5305\u542b\u67d0\u4e2a\u4e0b\u6807\u3002\u5b83\u4eec\u7684\u4f7f\u7528\u65b9\u5f0f\u5982\u4e0b\u6240\u793a\uff1a $array = [&#8216;name&#8217; =&amp;gt; &#8216;John&#8217;, &#8216;age&#8217; =&amp;gt; 30]; \/\/ \u4f7f\u7528isset()\u51fd\u6570\u5224\u65ad\u6570\u7ec4\u662f\u5426\u5305\u542b\u4e0b\u6807 if (isset($array[&#8216;name&#8217;])) { echo &#8216;Name is set.&#8217;; } else { echo &#8216;Name is not set.&#8217;; } \/\/ \u4f7f\u7528array_key_exists()\u51fd\u6570\u5224\u65ad\u6570\u7ec4\u662f\u5426\u5305\u542b\u4e0b\u6807 if (array_key_exists(&#8216;age&#8217;, $array)) { echo &#8216;Age is set.&#8217;; } else { [&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-22881","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22881","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=22881"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22881\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=22881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=22881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=22881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}