{"id":30599,"date":"2023-06-27T23:01:48","date_gmt":"2022-11-30T03:49:33","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e6%95%b0%e7%bb%84%e5%92%8c%e6%9d%a1%e4%bb%b6-2\/"},"modified":"2025-08-12T19:56:30","modified_gmt":"2025-08-12T11:56:30","slug":"php%e6%95%b0%e7%bb%84%e5%92%8c%e6%9d%a1%e4%bb%b6-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e6%95%b0%e7%bb%84%e5%92%8c%e6%9d%a1%e4%bb%b6-2\/","title":{"rendered":"PHP\u6570\u7ec4\u548c\u6761\u4ef6"},"content":{"rendered":"<h1>\u6392\u5217<\/h1>\n<pre class=\"post-pre\"><code>$a = [];\u3000\u2190\u914d\u5217\u306e\u8a18\u8ff0\r\n\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\r\n\u4f8b\r\n&lt;?php\r\n$week_name = ['\u65e5','\u6708','\u706b','\u6c34','\u6728','\u91d1','\u571f'];  \u2190\u914d\u5217\u306e\u4e2d\u8eab\u304c\u66dc\u65e5\r\nprint($week_name[1]);\r\nprint($week_name[date('w')]);\r\n?&gt;\r\n\u2192\u6708\r\n\u2192\u5165\u529b\u3057\u305f\u305d\u306e\u65e5\u306e\u66dc\u65e5\u304c\u51fa\u308b\r\n\r\n\u4e0a\u8a18\u306edate('w')\u306f\r\ndate\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304c\u3042\u308a\u3001\u305d\u3053\u304b\u3089\u65e5\u306b\u3061\u3092\u6301\u3063\u3066\u304d\u3066\u3044\u308b\uff01\uff01\r\n<\/code><\/pre>\n<h1>\u4f7f\u7528\u9010\u4e00\u8655\u7406\u9023\u60f3\u9663\u5217\u7684foreach\u5faa\u74b0<\/h1>\n<pre class=\"post-pre\"><code>$a = ['key_1'=&gt;'value_1','key_2'=&gt;'value_2'];  \u9023\u60f3\u914d\u5217\r\n\r\nforeach(\u914d\u5217\u306e\u5909\u6570\u3000as \u914d\u5217\u306e\u5f15\u6570){\r\n  \u51e6\u7406\u3057\u305f\u3044\u4e2d\u8eab\u3092\u8a18\u8ff0\r\n}\r\n\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\r\n\u4f8b\r\n&lt;?php\r\n$fruits = [\r\n  'apple'=&gt;'\u308a\u3093\u3054',\r\n  'grape'=&gt;'\u3076\u3069\u3046',\r\n  'lemon'=&gt;'\u30ec\u30e2\u30f3',\r\n  'tomato'=&gt;'\u30c8\u30de\u30c8',\r\n  'peach'=&gt;'\u3082\u3082'\r\n];\r\nforeach($fruits as $english =&gt; $japan){\r\n  print($english. ':'. $japan. \"\\n\");\r\n}\r\n?&gt;\r\n\u2192apple:\u308a\u3093\u3054\r\n\u2192grape:\u3076\u3069\u3046\r\n\u7701\u7565\r\n<\/code><\/pre>\n<h1>\u5982\u679c\u69cb\u6587 (If syntax)<\/h1>\n<pre class=\"post-pre\"><code>if(\u51fa\u529b\u306e\u6761\u4ef6){\r\n\u3000\u3000\u6761\u4ef6\u306b\u3042\u3063\u305f\u51fa\u529b\r\n}else{\r\n\u3000\u3000\u6761\u4ef6\u4ee5\u5916\u306e\u51fa\u529b\r\n}\r\n\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\r\n\u4f8b\r\n&lt;?php\r\nif(date('G') &lt; 9) {\r\nprint('\u55b6\u696d\u6642\u9593\u3067\u3059');\r\n}else{\r\n  print('\u55b6\u696d\u6642\u9593\u5916\u3067\u3059');\r\n}\r\n?&gt;\r\n\u2192\u6642\u9593\u5e2f\u306b\u3088\u308a\u51fa\u529b\u304c\u5909\u308f\u308aif\u6587\r\n\r\n<\/code><\/pre>\n<h1>\u70b9<\/h1>\n<pre class=\"post-pre\"><code>&lt;?php print(100\/3000*100). \"\\n\"; ?&gt;\r\n&lt;?php print(floor(100\/3000*100)); ?&gt;  floor\u5c0f\u6570\u70b9\u5207\u308a\u6368\u3066\r\n&lt;?php print(ceil(100\/3000*100). \"\\n\"); ?&gt;\u3000ceil\u5c0f\u6570\u70b9\u5207\u308a\u4e0a\u3052\r\n&lt;?php print(round(100\/3000*100, \uff13)); ?&gt;\u3000\u3000round\u56db\u6368\u4e94\u5165,\u5c11\u6570\u306e\u4f4d\u7f6e\u3092\u6307\u5b9a\r\n\u21923.3333333333333\r\n\u21923 \r\n\u21924\r\n\u21923.333\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6392\u5217 $a = [];\u3000\u2190\u914d\u5217\u306e\u8a18\u8ff0 \u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc\u30fc [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30599","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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