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phpcms中index.php中这段代码有何意义?

if (strpos($_server[request_uri], /cha)===0 ) { $end = strpos($_server[request_uri], /, 1); $channel = substr($_server[request_uri], 1, $end-1); $channelconfig = pc_base::load_config('channel'); if ( !empty($channel) && isset($channelconfig[$channel]) ) { setcookie(channel, $channel, time()+7*86400, /); }}

phpcms中index.php里的这段代码我懂代码意思,但是不知道这样有何意义,是不是phpcms里面一般都这样?
回复内容: if (strpos($_server[request_uri], /cha)===0 ) { $end = strpos($_server[request_uri], /, 1); $channel = substr($_server[request_uri], 1, $end-1); $channelconfig = pc_base::load_config('channel'); if ( !empty($channel) && isset($channelconfig[$channel]) ) { setcookie(channel, $channel, time()+7*86400, /); }}

phpcms中index.php里的这段代码我懂代码意思,但是不知道这样有何意义,是不是phpcms里面一般都这样?
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