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

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Jul 20, 2016 am 11:02 AM

const define php static

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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)

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);
  }
}
}