{"id":60,"date":"2020-09-29T14:06:22","date_gmt":"2020-09-29T06:06:22","guid":{"rendered":"http:\/\/9iwd.top\/?p=60"},"modified":"2020-09-29T14:06:22","modified_gmt":"2020-09-29T06:06:22","slug":"no-17-%e5%87%bd%e6%95%b0%e4%bd%93","status":"publish","type":"post","link":"http:\/\/9iwd.top\/?p=60","title":{"rendered":"No.17 \u51fd\u6570\u4f53"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>\/*\n\t\u53c2\u6570\u8be6\u89e3\n\t\u5f62\u53c2\n\u5f62\u53c2\uff1a\u5f62\u5f0f\u53c2\u6570\uff0c\u4e0d\u5177\u6709\u5b9e\u9645\u610f\u4e49\u7684\u53c2\u6570\uff0c\u662f\u5728\u51fd\u6570\u5b9a\u4e49\u65f6\u4f7f\u7528\u7684\u53c2\u6570\u3002\n\n\t\u5b9e\u53c2\n\u5b9e\u53c2\uff1a\u5b9e\u9645\u53c2\u6570\uff0c\u5177\u6709\u5b9e\u9645\u6570\u636e\u610f\u4e49\u7684\u53c2\u6570\uff0c\u662f\u5728\u51fd\u6570\u8c03\u7528\u65f6\u4f7f\u7528\u7684\u53c2\u6570\u3002\n\u5f62\u53c2\u662f\u5b9e\u53c2\u7684\u8f7d\u4f53\uff1a\u5b9e\u53c2\u5728\u8c03\u7528\u65f6\uff0c\u901a\u5e38\u662f\u9700\u8981\u4f20\u5165\u5230\u51fd\u6570\u5185\u90e8\u53c2\u4e0e\u8ba1\u7b97(\u8fd0\u7b97)\uff0c\u90a3\u4e48\u9700\u8981\u5728\u51fd\u6570\u5185\u90e8\u53bb\u627e\u5230\u5b9e\u9645\u6570\u636e\u6240\u5728\u7684\u4f4d\u7f6e\u624d\u80fd\u627e\u5230\u6570\u636e\u672c\u8eab\uff1a\u9700\u8981\u5b9e\u9645\u8c03\u7528\u7684\u65f6\u5019\uff0c\u624d\u5c06\u6570\u636e\u4ee5\u5b9e\u53c2\u7684\u5f62\u5f0f\u4f20\u9012\u7ed9\u5f62\u53c2\uff1a\u7ed9\u5f62\u53c2\u8d4b\u503c\uff0c\u4ece\u800c\u4f7f\u5f97\u51fd\u6570\u5185\u90e8\u53ef\u4ee5\u7528\u5230\u5916\u90e8\u6570\u636e\u3002\n*\/\nfunction add($arg1,$arg2){\t\/\/\u5f62\u53c2\u53ef\u4ee5\u6709\u591a\u4e2a\uff0c\u4f7f\u7528\u9017\u53f7\u5206\u9694\u5373\u53ef\n\t\/\/\u51fd\u6570\u4f53\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u5f62\u53c2\u8fd0\u7b97\n\techo $arg1 + $arg2;\n}\n\n\/\/\u8c03\u7528\u51fd\u6570\n$num1 = 20;\n\n\/\/\u4f20\u5165\u7684\u5b9e\u53c2\uff0c\u53ef\u4ee5\u662f\u53d8\u91cf\u3001\u6570\u636e\u6216\u8005\u5176\u4ed6\u6709\u503c\u7684\u8868\u8fbe\u5f0f\uff08\u53d8\u91cf\u3001\u5e38\u91cf\u3001\u8fd0\u7b97\u7b26\u8ba1\u7b97\u7ed3\u679c\uff09\nadd($num1,10);\necho '&lt;br\/>';\n\n\/*\n\u6ce8\u610f\uff1a\n1\u3001\u5728 PHP \u4e2d\u5141\u8bb8\u5b9e\u53c2\u591a\u4e8e\u5f62\u53c2\uff08\u4e2a\u6570\uff09\uff0c\u51fd\u6570\u5185\u90e8\u4e0d\u7528\u800c\u5df2\n2\u3001\u5728 PHP \u4e2d\u7406\u8bba\u4e0a\u5f62\u53c2\u4e2a\u6570\u6ca1\u6709\u9650\u5236\uff08\u5b9e\u9645\u5f00\u53d1\u4e0d\u4f1a\u592a\u591a\uff09\n3\u3001\u5b9e\u53c2\u4e0d\u80fd\u5c0f\u4e8e\u5f62\u53c2\u4e2a\u6570\n*\/\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n\t\u5f15\u7528\u4f20\u9012\n\u5b9e\u53c2\u5728\u8c03\u7528\u65f6\u4f1a\u5c06\u503c\u8d4b\u503c\u7ed9\u5f62\u53c2,\u90a3\u4e48\u5b9e\u9645\u4e0a\u4f7f\u7528\u7684\u65b9\u5f0f\u5c31\u662f\u4e00\u79cd\u7b80\u5355\u7684\u503c\u4f20\u9012:\u5c06\u5b9e\u53c2(\u5982\u679c\u662f\u53d8\u91cf\u6216\u8005\u5e38\u91cf\u6216\u8005\u5176\u4ed6\u8868\u8fbe\u5f0f\u3009\u7684\u7ed3\u679c(\u503c\uff09\u53d6\u51fa\u6765\u8d4b\u503c\u7ed9\u5f62\u53c2:\u5f62\u53c2\u4e0e\u5916\u90e8\u5b9e\u9645\u4f20\u5165\u7684\u53c2\u6570\u672c\u8eab\u6ca1\u6709\u4efb\u4f55\u5173\u8054\u5173\u7cfb:\u53ea\u662f\u7ed3\u679c\u4e00\u6837\u3002\n\n\u6709\u7684\u65f6\u5019\uff0c\u5e0c\u671b\u5728\u51fd\u6570\u5185\u90e8\u62ff\u5230\u7684\u5916\u90e8\u6570\u636e\uff0c\u80fd\u591f\u5728\u51fd\u6570\u5185\u90e8\u6539\u53d8\uff0c\u90a3\u4e48\u5c31\u9700\u8981\u660e\u786e\u544a\u77e5\u51fd\u6570\uff08\u5b9a\u4e49\u65f6)\uff0c\u51fd\u6570\u624d\u4f1a\u5728\u8c03\u7528\u7684\u65f6\u5019\u53bb\u4e3b\u52a8\u83b7\u53d6\u5916\u90e8\u6570\u636e\u7684\u5185\u5b58\u5730\u5740\u3002\u4ee5\u4e0a\u8fd9\u79cd\u5b9a\u4e49\u5f62\u5f0f\u53c2\u6570\u7684\u65b9\u5f0f\u4f5c\u5f15\u7528\u4f20\u503c\u3002\n\n\t\u53c2\u6570\u7684\u65b9\u5f0f\u5f15\u7528\u4f20\u503c\n\u57fa\u672c\u5b9a\u4e49\u8bed\u6cd5\uff1a\nfunction \u51fd\u6570\u540d(\u5f62\u53c21,&amp;\u5f62\u53c22){\n\t\/\/\u51fd\u6570\u4f53\n}\n\n\u5728\u8c03\u7528\u7684\u65f6\u5019\uff0c\u5fc5\u987b\u7ed9\u5f15\u7528\u4f20\u503c\u7684\u53c2\u6570\u4f4d\u7f6e\u4f20\u5165\u5b9e\u9645\u53c2\u6570\uff0c\u800c\u4e14\u53c2\u6570\u672c\u8eab\u5fc5\u987b\u662f\u53d8\u91cf\uff08\u53d8\u91cf\u624d\u6709\u6307\u5411\u7684\u6570\u636e\u7684\u5185\u5b58\u5730\u5740\uff09\n*\/\n\nfunction chuanzhi($a,&amp;$b){\n\t\/\/\u4fee\u6539\u5f62\u53c2\u5bf9\u5e94\u7684\u53d8\u91cf\n\t$a = $a * $a;\n\t$b = $b * $b;\n\techo $a,'&lt;br\/>',$b,'&lt;br\/>';\n}\n\n\/\/\u5b9a\u4e49\u53d8\u91cf\n$a = 10;\n$b = 5;\n\n\/\/\u8c03\u7528\u51fd\u6570\nchuanzhi($a,$b);\necho '&lt;hr\/>';\n\n\/\/\u8c03\u8bd5\u53d8\u91cf\u672c\u8eab\u662f\u5426\u6539\u53d8\necho $a,'&lt;br\/>',$b,'&lt;br\/>';\necho '&lt;hr\/>';<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n\t\u51fd\u6570\u4f53\n\u51fd\u6570\u4f53:\u51fd\u6570\u5185\u90e8(\u5927\u62ec\u53f7{}\u91cc\u9762)\u7684\u6240\u6709\u4ee3\u7801\u90fd\u79f0\u4e4b\u4e3a\u51fd\u6570\u4f53\n\u51fd\u6570\u4f53:\u57fa\u672c\u4e0a\u6240\u6709\u7684\u4ee3\u7801\u90fd\u53ef\u4ee5\u5b9e\u73b0\n1\u3001\u5b9a\u4e49\u53d8\u91cf\n2\u3001\u5b9a\u4e49\u5e38\u91cf\n3\u3001\u4f7f\u7528\u6d41\u7a0b\u63a7\u5236\uff08\u5206\u652f\u3001\u5faa\u73af\uff09\n4\u3001\u53ef\u4ee5\u8c03\u7528\u51fd\u6570\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\t\u8fd4\u56de\u503c\n\u8fd4\u56de\u503c\uff1areturn\uff0c\u6307\u7684\u662f\u5c06\u51fd\u6570\u5b9e\u73b0\u7684\u7ed3\u679c\uff0c\u901a\u8fc7 return \u5173\u952e\u5b57\uff0c\u8fd4\u56de\u7ed9\u51fd\u6570\u5916\u90e8\uff08\u51fd\u6570\u8c03\u7528\u5904\uff09\uff1a\u5728 PHP \u4e2d\u6240\u6709\u7684\u51fd\u6570\u90fd\u6709\u8fd4\u56de\u503c\u3002\uff08\u5982\u679c\u6ca1\u6709\u660e\u786e return \u4f7f\u7528\uff0c\u90a3\u4e48\u7cfb\u7edf\u9ed8\u8ba4\u8fd4\u56de NULL\uff09\n\n\u6ce8\u610f\uff1a\u51fd\u6570\u7684\u8fd4\u56de\u503c\u53ef\u4ee5\u662f\u4efb\u610f\u6570\u636e\u7c7b\u578b\nreturn \u5173\u952e\u5b57;\n\n1\u3001return \u5728\u51fd\u6570\u5185\u90e8\u7684\u4ef7\u503c\uff1a\u8fd4\u56de\u5f53\u524d\u51fd\u6570\u7684\u7ed3\u679c\uff08\u5f53\u524d\u51fd\u6570\u8fd0\u884c\u7ed3\u675f\uff09\n2\u3001return\u8fd8\u53ef\u4ee5\u5728\u6587\u4ef6\u4e2d\u76f4\u63a5\u4f7f\u7528\uff08\u4e0d\u5728\u51fd\u6570\u91cc\u9762):\u4ee3\u8868\u6587\u4ef6\u5c06\u7ed3\u679creturn\u540e\u9762\u8ddf\u7684\u5185\u5bb9\uff0c\u8f6c\u4ea4\u7ed9\u5305\u542b\u5f53\u524d\u6587\u4ef6\u7684\u4f4d\u7f6e\u3002\n*\/\n\nfunction fanhuizhi($a,$b){\n\t\/\/\u56e0\u4e3a\u8fd9\u91cc\u4f7f\u7528\u4e86 return \u5173\u952e\u5b57\u8fd4\u56de\u7ec8\u6b62\u540e\u9762\u7684\u8fd0\u884c\n\treturn $a * $b;\n\t\n\t\/\/\u6240\u4ee5\u8fd9\u91cc\u5c06\u4e0d\u88ab\u8f93\u51fa\n\techo $a;\n}\n\n$a=fanhuizhi(10,20);\n\/\/var_dump($a);\necho $a;\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\t\/\/\u88ab\u5305\u542b return \n\/\/\u5b9a\u4e49\u6587\u4ef6\u4e3a C:\/www\/return_include_once.php\nreturn '\u5f53\u524d\u88ab\u5305\u542b\u5df2\u7ecf\u5728\u6b64\u7ec8\u6b62\u8fd4\u56de';\n\necho '\u6240\u4ee5\u8fd9\u91cc\u4e0d\u88ab\u8f93\u51fa';\n\n\n\/\/\u5b9a\u4e49\u6587\u4ef6\u4e3a C:\/www\/return_include_once1.php\n$a = Include_once 'return_include_once.php';\nvar_dump($a);\n\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"_links":{"self":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts\/60"}],"collection":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=60"}],"version-history":[{"count":0,"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts\/60\/revisions"}],"wp:attachment":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=60"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=60"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=60"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}