php闈欐€佸彉閲廳efine,static,const_PHP鏁欑▼ | 甯涔嬪

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鏈€绠€鍗曞畾涔夋柟娉?/p>

define() 鍑芥暟瀹氫箟涓€涓父閲忋€?/p>

甯搁噺绫讳技鍙橀噺锛屼笉鍚屼箣澶勫湪浜庯細

鍦ㄨ瀹氫互鍚庯紝甯搁噺鐨勫€兼棤娉曟洿鏀?br /> 甯搁噺鍚嶄笉闇€瑕佸紑澶寸殑缇庡厓绗﹀彿 ($)
浣滅敤鍩熶笉褰卞搷瀵瑰父閲忕殑璁块棶
甯搁噺鍊煎彧鑳芥槸瀛楃涓叉垨鏁板瓧
璇硶

define(name,value,case_insensitive)

static 鐢ㄤ簬鍙橀噺锛屽０鏄庤繖涓彉閲忕殑瀛樺偍鍗曞厓闈欐€佸垎閰嶏紝浠庣▼搴忚繍绠楀紑濮嬪埌缁撴潫杩欎釜鍙橀噺鐨勫瓨鍌ㄥ崟鍏冧笉鍙樺寲銆俿tatic甯哥敤浜庡叏灞€閲忥紝涓€鏄瓨鍦ㄩ噷闈㈢殑鍊煎缁堟湁鏁堬紝涓嶅洜杩涢€€鍑哄瓙绋嬪簭鏁板€兼秷澶憋紝鍙﹀static鐨勫彉閲忚繍绠楅€熷害姣旈潪闈欐€佸垎閰嶇殑蹇€?/p>

PHP多文件上传插件

PHP多文件上传插件

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class foo {
   static $my_static = 5;
   public $my_prop = 'bla';
}

print foo::$my_static; copyright dedecms
$obj = new foo;
print $obj->my_prop;
?>

const 鏄父閲忥紝鍗充粠绋嬪簭杩愮畻寮€濮嬪埌缁撴潫锛屾暟鍊间笉鍙樼殑閲忋€?/p>

class say_const{  
const charset=”涓浗”锛?nbsp; 
publice function say_hello(){  
echo slef::charset;  
}  
}  
$const1=new say_const()’  
$const1->say_hello();  
?>  

杈撳嚭灏辨槸“涓浗”

涓嬮潰涓€娆惧畬鏁寸殑闈欐€佸彉閲?/p>

function write_file($file,$msg,$usecheck=5){
 static $check=1;//杩欓噷鐢ㄥ埌浜唦
 $f=@fopen($file,"a+b");
 if($f){
  if(flock($f,lock_ex)){
   fwrite($f,$msg);
   flock($f,lock_un);
   fclose($f);
  }else{
   fclose($f);
   $check++;
   if($check     sleep(1);//鏆傚仠涓嬬▼搴?绛夊叾浠栬繘绋嬮噴鏀捐璧勬簮
    write_file($file,$msg);
   }
  }
 }else{
  $check++;
  if($check    sleep(1);//鏆傚仠涓嬬▼搴?绛夊叾浠栬繘绋嬮噴鏀捐璧勬簮
   write_file($file,$msg);
  }
 }
}