{"id":94,"date":"2020-11-12T15:19:13","date_gmt":"2020-11-12T07:19:13","guid":{"rendered":"http:\/\/9iwd.top\/?p=94"},"modified":"2020-11-12T15:19:13","modified_gmt":"2020-11-12T07:19:13","slug":"no-24-%e5%ad%97%e7%ac%a6%e4%b8%b2%e7%9b%b8%e5%85%b3%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"http:\/\/9iwd.top\/?p=94","title":{"rendered":"No.24 \u5b57\u7b26\u4e32\u76f8\u5173\u51fd\u6570"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>\t#\u5b57\u7b26\u4e32\u76f8\u5173\u51fd\u6570\n\/\/1\uff09\u8f6c\u6362\u51fd\u6570: implode(), explode(), str_split()\n$array = array('lastname', 'email', 'phone');\necho implode(',', $array),'&lt;br\/>';\t\t\/\/\u5c06\u4e00\u4e2a\u6570\u7ec4\u7528\u6307\u5b9a\u5b57\u7b26\u8fde\u63a5\u6210\u5b57\u7b26\u4e32,\u7b2c\u4e00\u53c2\u6570\u7a7a\u5219\u76f4\u63a5\u8fde\u63a5\n\necho '&lt;hr\/>&lt;pre>';\n$msg = 'abc|def|ghi';\nvar_dump (explode('|',$msg));\t\t\/\/\u5c06\u5b57\u7b26\u4e32\u4ee5\u6307\u5b9a\u8868\u793a\u5206\u5272\u6210\u6570\u7ec4\uff0c\u53ef\u4ee5\u7528\u7b2c\u4e09\u53c2\u6570\u63a7\u5236\u53d6\u6570\u7ec4\u4e2a\u6570\n\nvar_dump (str_split($msg,3));\t\t\/\/\u5c06\u4e00\u6bb5\u5b57\u7b26\u4e32\u4ee5\u6307\u5b9a\u957f\u5ea6\u5206\u5272\u4e3a\u6570\u7ec4\necho '&lt;hr\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/2\uff09\u622a\u53d6\u51fd\u6570:trim(), ltrim(), rtrim()\n$a = ' asdf fgd gh  \ta';\necho trim($a,'a'),'&lt;br\/>';\t\t\/\/\u9ed8\u8ba4\u5220\u9664\u9996\u5c3e\u7a7a\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528\u7b2c\u4e8c\u53c2\u6570\u6307\u5b9a\necho ltrim($a,' a'),'&lt;br\/>';\t\/\/\u9ed8\u8ba4\u5220\u9664\u9996\u7a7a\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528\u7b2c\u4e8c\u53c2\u6570\u6307\u5b9a\necho rtrim($a,'a'),'&lt;br\/>';\t\t\/\/\u9ed8\u8ba4\u5220\u9664\u5c3e\u7a7a\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528\u7b2c\u4e8c\u53c2\u6570\u6307\u5b9a\necho '&lt;hr\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/3\uff09\u622a\u53d6\u51fd\u6570: substr(), strstr()\n$a = 'asdfghjkl';\necho substr($a,5,1),'&lt;br\/>';\t\/\/\u53d6\u6587\u672c\u76f8\u95f4\u7684\u5b57\u7b26\u4e32\necho strstr($a,'d'),'&lt;br\/>';\t\/\/\u53d6\u7b2c\u4e8c\u53c2\u6570\u524d\u6216\u540e\u5b57\u7b26\u4e32\uff0c\u53d6\u51b3\u4e8e\u7b2c\u4e09\u53c2\u6570\u662f FALSE\/TRUE\necho '&lt;hr\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/4\uff09\u5927\u5c0f\u8f6c\u6362\u51fd\u6570:strtolower(), strtoupper(), ucfirst()\n$a = 'asdFghJkl';\necho strtolower($a),'&lt;br\/>';\t\/\/\u6240\u6709\u5185\u5bb9\u4e3a\u5c0f\u5199\necho strtoupper($a),'&lt;br\/>';\t\/\/\u6240\u6709\u5185\u5bb9\u4e3a\u5927\u5199\necho ucfirst($a),'&lt;br\/>';\t\t\/\/\u9996\u5b57\u6bcd\u4e3a\u5927\u5199\necho '&lt;hr\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/5\uff09\u67e5\u627e\u51fd\u6570:strpos(), strrpos()\necho strpos($a,'s'),'&lt;br\/>';\t\/\/\u5bfb\u627e\u6307\u5b9a\u6807\u8bc6(\u9996\u6b21)\uff0cTRUE \u8fd4\u56de\u4f4d\u7f6e \u5426\u5219\u8fd4\u56de FALSE\necho strrpos($a,'J'),'&lt;br\/>';\t\/\/\u4ece\u672b\u5c3e\u5f00\u59cb\u5bfb\u627e\u6307\u5b9a\u6807\u8bc6(\u5c3e\u9996\u6b21)\uff0cTRUE \u8fd4\u56de\u4f4d\u7f6e \u5426\u5219\u8fd4\u56de FALSE\necho '&lt;hr\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/6\uff09\u66ff\u6362\u51fd\u6570:str_replace()\necho str_replace('a','@',$a),'&lt;br\/>';\t\/\/\u5c06\u7b2c\u4e09\u53c2\u6570\u6240\u6709\u5305\u542b\u7b2c\u4e00\u53c2\u6570\u7684\u5185\u5bb9\uff0c\u66ff\u6362\u4e3a\u7b2c\u4e8c\u53c2\u6570\u5185\u5bb9\necho '&lt;hr\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/7\uff09\u683c\u5f0f\u5316\u51fd\u6570:printf(), sprintf()\necho printf(\"\u4f60\u597d\uff01\u6211\u7684\u540d\u5b57\uff1a%s\u4eca\u5e74\uff1a%d\u5c81\",'\u5c0f\u871c',222),'&lt;br\/>';\necho sprintf(\"\u4f60\u597d\uff01\u6211\u7684\u540d\u5b57\uff1a%s\u4eca\u5e74\uff1a%d\u5c81\",'\u5c0f\u871c',222),'&lt;br\/>';\n\/\/\u4ee5\u4e0a\u4e24\u4e2a\u51fd\u6570\u529f\u80fd\u4e00\u6837\uff0cprintf \u8fd4\u56de\u5b57\u7b26\u957f\u5ea6\necho '&lt;hr\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/8\uff09\u5176\u4ed6:str_repeat(), str_shuffle()\necho str_repeat('a',10),'&lt;br\/>';\t\/\/\u53d6\u91cd\u590d\u5b57\u7b26\u4e32\necho str_shuffle($a),'&lt;br\/>';\t\t\/\/\u968f\u673a\u6253\u4e71\u5b57\u7b26\u4e32\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\/94"}],"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=94"}],"version-history":[{"count":0,"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts\/94\/revisions"}],"wp:attachment":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=94"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=94"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=94"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}