?? ?????? ??? ????? ???? ?? ??? ????. ???? ????, ???? ??? ?? ??? ?????. ??? ????? ???? ? ?? ??? ???????.
php? ???? yii2? ???? ??? ?????.
1.file_exists() ??
file_exists() ??? ???? ????? ??? ?????.
??? ???? ????? ???? true? ????, ??? ??? false? ?????.
?: file_exists(path); ???? ??? URL? ?? path?? ???. ??? ??? ?? false? ?????.
??:
1.
2. ??? ?? ????? ?? ??? ??? ??? ???? ???? ?????.
3. ?? ?? ????? ?? ??? ??? ??? ?? ?????. ??? ???? ?? ?? ?????.
file_exists()? ?? ?? ??? ??? ? ? ????? ?? ??? ???? ????? ????? ?????.
2.file_get_contents() ??
file_get_contents - ?? ??? ???? ?????.
???? file_get_contents()? FALSE? ?????.
?? ??(?: ??)? ??? URL? ??? URL ???? urlencode()? ???? ???.
??? ? ??? ??? ?? ??? ? ?? ??? ???? ???? ?? ??? ??? ? ????.
file_get_contents ??? ?? ??? ????? ???? ?? ?? ????? ??? ? ????. $context.??? ??? ????:
$opts = array( 'http'=>array( 'method'=>"GET", 'timeout'=>10, ) ); $context = stream_context_create($opts); $html =file_get_contents('http://www.example.com', false, $context); echo $html;
3. ? ???? ??? ??
:
1. FTP ??? ? PHP ? ?? ???? ??
3. ?????? ??? ??: ??? ????? ???? ?? ??? ?????? ? ????
4. ????? ??(API), ??? ?? ? ??: ???? ?? ?? ???? ??? ??? ??? ?? ? ?????.
5. ????? ?? ? ??: ???? ???? ?? ??? ??? ? ????.
CURL ?? ?? ??:
PHP? ????? CURL? ???? ????. php.ini?? ? ??? ????? ???.
;extension=php_curl.dll?? ?? ????1? ?????. ?? ? ?? ??? ?_init() ??
2? ????? ????. ??? ????? ?_setopt() ??? ?????.
3. ?? ? ????? ?????. ?_exec($curl);
4 ????? ?_close()? ????.
curl? get ? post ???? ?????.
function curl($url, $type = 'get', $post_data = null, $second = 30) { $ch = curl_init(); //設(shè)置超時 curl_setopt($ch, CURLOPT_TIMEOUT, $second); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); // //設(shè)置header curl_setopt($ch, CURLOPT_HEADER, false); //要求結(jié)果為字符串且輸出到屏幕上 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); if ('post' == $type) { curl_setopt($ch, CURLOPT_POST, 1); //開啟POST curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data); //POST數(shù)據(jù) } $output = curl_exec($ch); curl_close($ch); return $output; //返回或者顯示結(jié)果 }
?? ?? ?? ????:
yii ????? ??? yii2?? PHP? ???? ???? ????? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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MVC ??? ???? ?? ????? ????? ?? ???? ?????? ??? ?? ??? ?????. ????? ?? ??? ???? ??? ????? ??? ??? ??? ????? ??? ???? ????. 1.?? ??? ???? ???? ?????? ??????. ?? ??, ???? Postscontroller? ?? ?? ?????? ??? Views/Posts/show.html.erb ?? views/posts/show.cshtml??????. 2. ?? ? ???? ???? ?? ? view ( 'posts.custom_template')?? Render'Custom_template '? ?? ??? ???? ??????.

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YII?? ??? ?? ??? ???? ??? ????? ???? ???? ???? ???? ???? ????? ?? ??? ???? ????. ?? ?? ??? ?? ???? ????? ?? ?????? JSON? ??????. ????? ??? ??? ?? ??? ?????. ?? ???? ??? ?????. 1. ???? ???? ????. 2. ??? ????? ??????. 3. URL ?? ????? ? ????. 4. ?? ??, ??? ?? ??, ???? ?? ?? ???? ???; 5. AccessControl ?? ?? ?? ??? ???? ???? ??????. ?? ??, ActionProfile ($ id)? /site /profile? id = 123? ?? ????? ??? ??? ???? ??? ? ? ????. ?? ??????

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?? ??? ????, ?? ??? ??? ?????, ?????? ??? ????, ??? ??? ???? ????? YII?? ?? ???? ?? ? ? ????. ?? ??? ??? ????. 1. filetarget ?? dbtarget? ?? ?? ???? ?? ?? ??? ???? ??? '??'?? ?????. 2. yii :: info () ?? yii :: ?? ()? ???? ??? ???? ??? ????? (? : ??? ?? ? ???? ???)? ??? ?; 3. ????? ?? ? ??? ?? ??????? ??? ???? ?? ???? ???? ?? ??? ?? ??? ???????. 4. ???? ??? ?? ? ? ?? ?? ??? ?? ??? ???? ???? ??? ???? ??? ???? IP ? ??? ??? ?? ? ? ????. 5
