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¾­µäÖ®×÷ - ÓÃÐǼʽâ˵PHPÃæÏò¶ÔÏó±à³Ì

Submitted by ×÷Õß: admin 2008-06-25 12:15:27

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ÏÖÔÚ¼ÙÉèÎÒÃÇÀ´ÓÃPHP¿ª·¢ÐǼÊÕù°Ô£¬´Ó¶ø½Ó´¥PHPÃæÏò¶ÔÏó¡£

×¢Ò⣬ΪÁ˱ãÓÚѧϰ£¬³ýÁËÌØÊâ˵Ã÷£¬·ñÔò¸÷²¿·Ö´úÂëÖ®¼äûÓйØÁª¡£¶øÇÒͬһ¼þÊÂÇéÍùÍùÓõÄÊDz»Í¬µÄ´úÂë¡£

ÁíÍâÎÒÒ²²»È¥¿¼Ö¤¸÷¸ö±øÖÖµÄÊôÐÔÊý×Ö£¬½ö½öÓÃÀ´ËµÃ÷¡£

 

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ÎÒÃÇ¿ÉÒÔÓÃÒ»¸öÊý×éÀ´¼Ç¼һ¸ö»úǹ±øÊ£ÓàµÄѪºÍɱµÐÊýÁ¿£¬ÒòΪÕâ¶ÔÓÚÿ¸ö»úǹ±øÊǶÀÁ¢µÄ¡£

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1.1¡¢ÀàµÄ¶¨Òå

ÎÒÃÇÏÈÀ´´¦ÀíÒ»²¿·ÖÎÊÌ⣬Ҳ¾ÍÊÇÿ¸ö»úǹ±ø¶ÀÓеÄÊý¾Ý¡£

class marine

{

   public $blood = 50; //Ê£ÓàµÄѪ

   public $kills = 0; //ɱµÐÊýÁ¿

   //Õâ¸öº¯Êý£¨Í¨³£½Ð×ö·½·¨£©±íʾ¹¥»÷µÐÈËʱºòµÄÔËÐдúÂë
   function attack($enemy)

   {

   //¹¥»÷µÐÈ˵ĴúÂë

   }

}

Õâ½Ð×öÀ࣬ÎÒÃǽ¨Á¢ÁËÒ»¸ö±íʾËùÓлúǹ±øµÄÀàmarine£¬ÕâÀïÃæ±£ÁôÁËÐèҪÿ¸ö±ø¶ÀÓеÄÊý¾Ý£¬±ÈÈçÉÏÃæ´úÂëÀïµÄÊ£ÓàµÄѪ¡£

 

1.2¡¢¶ÔÏóµÄ´´½¨ºÍʹÓÃ

½ÓÏÂÀ´ÎÒÃÇÀ´Ê¹ÓöÔÏó£¬Ò²¾ÍÊÇÿ¸ö»úǹ±ø£º

$m1 = new marine();

ͨ¹ýnewºóÃæ¼ÓÒ»¸öÀàµÄÃû×ÖºÍÀ¨ºÅ£¬ÎÒÃÇн¨ÁËÒ»¸ö»úǹ±ø$m1£¬$m1±»½Ð×öÀàmarineµÄ¶ÔÏó£¬ÎÒÃÇ¿ÉÒÔ°ÑËüÏëÏó³ÉÒ»¸öÌØÊâ±äÁ¿£¬Ö»²»¹ýÀïÃæ±£´æÁ˶à¸öÊý¾Ý¡£

Èç¹ûÐèҪʹÓûòÕß²Ù×÷ij¸ö»úǹ±øµÄѪ£¨¶ÔÏóµÄÊôÐÔ£©£¬Ö»ÒªÓÃ$m1->bloodÀ´±íʾ¾Í¿ÉÒÔÁË£º

echo $m1->blood;//Êä³ö»úǹ±ø$m1Ê£ÓàµÄѪ

ÎÒÃÇÔÙ½¨Á¢Ò»¸ö»úǹ±ø

$m2 = new marine();

Èç¹û´Ëʱ$m1±»µÐÈ˹¥»÷¹ýÁË£¬»¹Ê£ÏÂ10¸öѪ¡£¶ø$m2ûÊܹý¹¥»÷£º

echo $m1->blood;//½á¹ûÊÇ10

echo $m2->blood;//½á¹ûÊÇ50

ʹÓöÔÏó¿ÉÒԺܼòµ¥µÄ±£´æÃ¿¸ö»úǹ±øµÄѪ£¬²»»á»¥ÏàÓ°Ïì¡£

Èç¹û»úǹ±ø$m1¹¥»÷µÐÈ˵Äʱºò£¬¿ÉÒÔÕâÑùʹÓöÔÏóµÄ·½·¨£º

$m1->attack($z1);//¼ÙÉè¹¥»÷µÄÊÇij¸öС¹·µÄ¶ÔÏó$z1

²»Í¬µÄÀàÄÚ¿ÉÒÔÓÃͬÃûµÄº¯Êý£¬±ÈÈçС¹·µÄÀàZerglingÀïÃæÒ²¿ÉÒÔÓÐÒ»¸öº¯Êýattack

ҪעÒâµÄÊÇ£¬´ÓPHP5¿ªÊ¼£¬ÎÞÂÛÔÚÄÄÀï¸Ä±äÒ»¸ö¶ÔÏóµÄÊôÐÔ£¬¶¼ÄܸıäËü¡£±ÈÈçÉÏÃæÒ»¸öС¹·¶ÔÏó±»×÷Ϊ²ÎÊý´«Èë»úǹ±øµÄattackº¯Êý£¬Ö´Ðк¯ÊýÖ®ºóÕâ¸öС¹·¶ÔÏóµÄѪ¼õÉÙÁË£¬ÕâºÍÒ»°ãµÄº¯Êý²»Í¬¡£µ«ÕâÊǺÜÖ±¹ÛµÄ£¬Èç¹ûÒ»¸öС¹·±»¹¥»÷ÁË£¬ËüµÄѪ¾ÍÓ¦¸Ã¼õÉÙ¡£

 

¶þ¡¢¹¹Ô캯ÊýºÍÎö¹¹º¯Êý

ÿ´ÎÎÒÃÇн¨Ò»¸ö»úǹ±øµÄʱºò£¬×ÜÈË¿ÚÓ¦¸Ã¼Ó1£¬Èç¹ûÒ»¸ö»úǹ±ø±»É±£¬ÈË¿ÚÓ¦¸Ã¼õÉÙ1¡£

¿ÉÒÔͨ¹ý¹¹Ô캯ÊýºÍÎö¹¹º¯ÊýÀ´×Ô¶¯´¦Àí£º

class marine

{

   //¹¹Ô캯Êý
   function __construct()

   {

   //Ôö¼Ó×ÜÈ˿ڵĴúÂë

   }

   //Îö¹¹º¯Êý
   function __destruct()

   {

   //¼õÉÙ×ÜÈ˿ڵĴúÂë

   }

}

ÔÚÒ»¸öÀàÖУ¬Ãû×ÖΪ__constructµÄº¯Êý½Ð×ö¹¹Ô캯Êý£¬Ã¿´Înewн¨Ò»¸öÀàµÄ¶ÔÏóµÄʱºò¾Í»áÖ´ÐУº

$m1 = new marine();//ÿ´ÎÖÆÔìÒ»¸ö»úǹ±øÊ±ÏµÍ³»áµ÷ÓÃÀàmarineµÄ¹¹Ô캯Êý£¬×Ô¶¯Ôö¼Ó×ÜÈË¿Ú

ÔÚÒ»¸öÀàÖУ¬Ãû×ÖΪ__destructµÄº¯Êý½Ð×öÎö¹¹º¯Êý£¬Ã¿´ÎÏú»ÙÒ»¸öÀàµÄ¶ÔÏóµÄʱºò¾Í»áÖ´ÐУº

unset($m1);//unset¿ÉÒÔÓÃÓÚ¶ÔÏ󣬱íʾÏú»ÙÒ»¸ö¶ÔÏó¡£Ã¿´ÎÒ»¸ö»úǹ±ø±»É±Ê±ÏµÍ³»áµ÷ÓÃÀàmarineµÄÎö¹¹º¯Êý£¬×Ô¶¯¼õÉÙ×ÜÈË¿Ú

 

Èý¡¢¾²Ì¬

»úǹ±øµÄ¹¥»÷Á¦ÊÇÊôÓÚËùÓлúǹ±ø¶ÔÏó£¬Ã¿¸ö»úǹ±øµÄ¹¥»÷Á¦¶¼ÊÇÒ»ÑùµÄ£¬Èç¹ûÉý¼¶£¬Ó¦¸ÃÒ»Æð±ä»¯¡£

Õâ¾ÍÓõ½static£¬±íʾ¾²Ì¬£º

class marine

{

static $attackNumber = 10; //¹¥»÷Á¦µÄÊý×Ö

   //Õâ¸öº¯Êý±íʾ¹¥»÷µÐÈËʱºòµÄÔËÐдúÂë
   function attack($enemy)

   {

   //¹¥»÷µÐÈ˵ĴúÂ룬$enemy->blood±íʾµÐÈ˶ÔÏóµÄѪÊôÐÔ

   $enemy->blood -= self::$attackNumber;

   }

}

¾²Ì¬ÊôÐÔ±íʾÀàËùÓеĶÔÏó¶¼¹²ÏíµÄÊôÐÔ£¬Ò»µ©¸Ä±ä£¬ËùÓеĶÔÏ󶼸ú×ű仯¡£

¾²Ì¬ÊôÐÔÓÃstatic¿ªÍ·£¬±ÈÈçÉÏÃæµÄstatic $attackNumber¡£

¾²Ì¬ÊôÐÔ¿ÉÒÔÓÃÀàÖ±½Ó·ÃÎÊ£º

echo marine::$attackNumber;//ÏÔʾ10

Èç¹ûÀàÒÔÄڵĺ¯Êý·ÃÎÊ£¬ÓÃself::$attackNumber±íʾ±¾ÀàµÄ$attackNumberÊôÐÔ

ËùÒÔÈç¹ûÎÒÃÇÉý¼¶ÁË»úǹ±øµÄ¹¥»÷Á¦£¬ËùÓеĻúǹ±ø¶¼ÊÜÓ°Ï죬Õâ¾ÍÊÇÃæÏò¶ÔÏóµÄºÃ´¦Ö®Ò»£¬Ò²½â¾öÁËÎÒÃÇÇ°ÃæÌÖÂ۵Ĺ²Í¬Êý¾ÝµÄÎÊÌâ¡£

º¯ÊýÒ²¿ÉÒÔÊǾ²Ì¬µÄ£¬ÕâÑù¾Í¿ÉÒÔÓÃÀàÖ±½Ó·ÃÎÊ£¬²»ÐèҪн¨¶ÔÏóÀ´µ÷Óãº

class marine

{

static $attackNumber = 10; //¹¥»÷Á¦µÄÊý×Ö

   //Õâ¸öº¯Êý±íʾ»úǹ±øÉý¼¶µÄÔËÐдúÂë
   static  function upgrade()

   {

   self::$attacknum++;

   }

}

Èç¹û¿Æ¼¼½¨ÖþÉý¼¶Íê±Ï£¬Ö±½Ó¾Íµ÷ÓÃÕâ¸öº¯Êý£º

marine::upgrade();

 

ËÄ¡¢¼Ì³Ð

±øÓªÓÃÀ´Ôì»úǹ±ø£¬Ì¹¿Ë·¿ÓÃÀ´ÖÆÔì̹¿Ë£¬ËûÃǶ¼Êǽ¨Öþ£¬µ«ÊÇÈ´Óкܶ಻ͬ£¬Èç¹ûÓÃÒ»¸öÀà“½¨Öþ”À´±íʾ£¬ºÜÀ§ÄÑ¡£

µ«ÎÒÃÇÒª±£ÁôËûÃǵĹ²ÐÔ£¬±ÈÈç¶¼ÄÜ·ÉÐУ¬²»Ï£Íû·ÉÐеĴúÂëÔÚ¸÷¸öÀàÖØ¸´Ð´£¬ÓÖÒªÈÃËûÃÇÄܸ÷×Ô¶ÀÁ¢µÄÉú²ú²»Í¬µÄ¶«Î÷¡£

ËùÒÔÎÒÃÇ¿ÉÒÔÓü̳ÐÀ´´¦Àí£¬¼Ì³Ð±íʾ¸¸×Ó¹ØÏµ£¬±»¼Ì³ÐµÄ½Ð¸¸À࣬¼Ì³ÐµÄ½Ð×ÓÀà¡£ÓÃextends±íʾ¼Ì³Ð

//½¨ÖþÀà

class building

{

   function fly()

   {

   //½¨Öþ·ÉÐеĴúÂë

   }

}

//±øÓªÀà

class marineBuilding extends building

{

   function createMarine()

   {

   //ÖÆÔì»úǹ±øµÄ´úÂë

   }

}

//̹¿Ë·¿Àà

class tankBuilding extends building

{

   function createTank()

   {

   //ÖÆÔì̹¿ËµÄ´úÂë

   }

}

½ÓÏÂÀ´£¬ÎÒÃÇ¿´¿´¼Ì³Ð²úÉúµÄЧ¹û£º

//Èç¹ûÔìÁËÒ»¸ö±øÓª£º

$mb1 = new marineBuilding();

/**

Ò»µ©ËûÐèÒª·ÉÐУ¬¾Í¿ÉÒÔÖ±½ÓʹÓý¨ÖþÀàµÄº¯Êýfly()£¬¾¡¹Ü±øÓªÀàµÄ¶¨ÒåÀïûÓÐÕâ¸öº¯Êý

*/

$mb1->fly();

//¶øËûÒªÖÆÔì»úǹ±øµÄʱºò£º

$mb1->createMarine();

ͬÑùÊǼ̳н¨ÖþÀàµÄ̹¿Ë·¿À࣬¾ÍÎÞ·¨ÖÆÔì»úǹ±ø£¬ÒòΪÕâÊDZøÓªÀàµÄ¸öÐÔ¡£

Èç¹ûÔÚ×ÓÀàÖеĺ¯Êýµ÷Óø¸ÀàµÄº¯Êý£¬ÒªÊ¹ÓÃparent£¬±ÈÈçparent::fly()

×¢Ò⣬һ¸öÀàÖ»ÄÜÓÐÒ»¸ö¸¸À࣬PHP²»ÔÊÐí¶àÖØ¼Ì³Ð£¬Ò²¾ÍÊÇ˵һ¸öº¢×ÓÖ»ÄÜÓÐÒ»¸öµù£¬Ò»¸öµù¿ÉÒÔÓÐN¸öº¢×Ó£¡

 

Îå¡¢·ÃÎÊ¿ØÖÆ

Èç¹ûÓÃ$attackNumber = 10±íʾÊôÐԵϰ£¬ÏµÍ³Ä¬ÈÏÊÇpublic $attackNumber = 10£¬ËùÒÔ½¨ÒéÕâÑùд£º

class marine

{

public static $attackNumber = 10; //¹¥»÷Á¦µÄÊý×Ö

}

public±íʾÕâ¸öÊôÐÔÊǹ«¹²µÄ£¬Ò²¾ÍÊÇÔÚÈκεط½¶¼¿ÉÒÔ·ÃÎʺͲÙ×÷µÄ¡£

µ«Õâ¾Í´æÔÚһЩÎÊÌ⣬Èç¹ûÓÐÍæ¼ÒÖªµÀÁËÀàmarineµÄһЩ´úÂë½á¹¹£¬ÄÇËû×ö¸ö¼òµ¥µÄ²¹¶¡³ÌÐò£¬ÔËÐеÄʱºò¼ÓÔØÉÏÈ¥£º

//²¹¶¡

marine::$attackNumber = 10000;

ÕâÑùµÄ»°£¬ËûµÄ»úǹ±øÓÐ10000µÄ¹¥»÷Á¦£¬ºÇºÇ£¬ÕâÑùµÄ»°£¬Ë­´òµÃ¹ýËû£¡

Ϊ´ËÎÒÃÇÒªÓÃprivate£¬±íʾÕâ¸öÊôÐÔÖ»ÓÐÀàÀïÃæµÄº¯Êý²ÅÄÜ·ÃÎÊ£º

class marine

{

private static $attackNumber = 10; //¹¥»÷Á¦µÄÊý×Ö

   //Õâ¸öº¯Êý±íʾ»úǹ±øÉý¼¶µÄÔËÐдúÂë
   function upgrade()

   {

      //ÕâÑù·ÀÖ¹ÎÞÏÞÉý¼¶

      if(self::$attacknum<13)

      {

      self::$attacknum++;

      }

   }

}

ÕâÑùÒ»À´£¬Ö»ÓÐÉý¼¶²ÅÄܸıä»úǹ±øµÄ¹¥»÷Á¦¡£

µ«ÊÇÏÖÔÚÍùÍùÊÇÍŶӿª·¢£¬¶øÇҺܶàÓõ½ÀàµÄ¼Ì³Ð£¬Èç¹ûprivateµÄ»°£¬×ÓÀà¾ÍÎÞ·¨·ÃÎÊÁË£¬µ«ÓÖ²»Ï£ÍûËæ±ã¶¼¿ÉÒÔÐÞ¸ÄijЩÊôÐÔ¡£

ÄÇô¿ÉÒÔÓÃprotected£¬protectedµÄÊôÐÔ¿ÉÒÔ±»×ÓÀàµÄº¯Êý·ÃÎÊ¡£

 

Áù¡¢ÖØÔØ

 

6.1¡¢ÊôÐÔÖØÔØ

Èç¹ûÎÒÃǰѵØÃ沿¶Ó×÷Ϊһ¸öÀ࣬Èûúǹ±øÀàÀ´¼Ì³ÐËû£¬ÕâʱºòÈç¹ûµØÃ沿¶ÓÀàºÍ»úǹ±øÀàÀïÃæ¶¼¶¨ÒåÁ˹¥»÷Á¦$attackNumber£¬ÄÇôÿ¸ö±øµÄ¹¥»÷Á¦¾Í¾ö¶¨ÓÚ»úǹ±øÀ࣬¶ø²»ÊǵØÃ沿¶Ó¡£Õâ¾Í½Ð×öÖØÔØ¡£

//µØÃ沿¶Ó

class groundArmy

{

public $attackNumber = 5;

}

//»úǹ±ø

class marine extends groundArmy

{

public $attackNumber = 10; //¹¥»÷Á¦µÄÊý×Ö

}

$m1 = new marine();//н¨Ò»¸ö»úǹ±ø

echo $m1->attackNumber;//ÏÔʾ¹¥»÷Á¦Îª10

 

6.2¡¢º¯ÊýÖØÔØ

ÖØÔØÒ²¿ÉÒÔÓÃÓÚº¯Êý£¬×ÓÀàµÄº¯ÊýÈç¹ûºÍ¸¸ÀຯÊýͬÃû£¬³ý·ÇÁíÐÐ˵Ã÷£¬·ñÔò×ÓÀàµÄ¶ÔÏóĬÈϵ÷ÓÃ×ÓÀàÄڵĺ¯Êý¡£

±ÈÈçÈË×åµÄ¹í±øÀàghostºÍÉñ×åÀàµÄºÚ°µÊ¥ÌÃÀࣨÒþµ¶£©£¬¶¼ÊÇÒþÐαøÖÖ£¬µ«ÊÇ¹í±øÒþÐεÄʱºò»á¼õÉÙÄÜÁ¿£¬ºÚ°µÊ¥Ìøù±¾Ã»ÓÐÄÜÁ¿ÊôÐÔ¡£

Èç¹ûÎÒÃǰÑÒþÐÎÄÜÁ¦×÷Ϊ¸¸À࣬¹í±øÀàghostºÍÉñ×åÀàµÄºÚ°µÊ¥ÌÃÀàDarkTemplarÀ´¼Ì³ÐËü£¬Í¬Ê±ÊµÏÖ²»Í¬µÄÒþÐδúÂ룺

//ÒþÐÎÄÜÁ¦Àà

class concealAbility

{

   //Õâ¸öº¯Êý±íʾÒþÐεÄÔËÐдúÂë
   function conceal()

   {

      //ÒþÐεÄÔËÐдúÂë

   }

}

//¹í±øÀà

class ghost extends concealAbility

{

$energy = 150;

   //Õâ¸öº¯Êý±íʾÒþÐεÄÔËÐдúÂë
   function conceal()

   {

      //ÒþÐεÄÔËÐдúÂë

      //¼õÉÙ¹í±øµÄÄÜÁ¿£¬$this±íʾµ±Ç°¶ÔÏó£¬Ò²¾ÍÊǵ±Ç°Õâ¸ö¹í±ø

      $this->energy -= 25;

   }

}

//ºÚ°µÊ¥ÌÃÀà

class DarkTemplar extends concealAbility

{

   //Õâ¸öº¯Êý±íʾÒþÐεÄÔËÐдúÂë
   function conceal()

   {

      //ÒþÐεÄÔËÐдúÂ룬²»Ó°ÏìÄÜÁ¿

   }

}

//н¨Ò»¸ö¹í±ø

$g1 = new ghost();

//ÏÔʾÄÜÁ¿Îª150

echo $g1->energy;

//¹í±øÒþÐÎ

$g1->conceal();

//ÏÔʾÄÜÁ¿Îª125

echo $g1->energy;

//н¨Ò»¸öºÚ°µÊ¥ÌÃ

$d1 = new DarkTemplar();

//ºÚ°µÊ¥ÌÃÒþÐΣ¬ËûûÓÐÄÜÁ¿ÊôÐÔ

$g1->conceal();

 

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ÄÇÎÒÃDz»Óü̳ÐÒ²ÐУ¬µ«ÊÇ¿ª·¢×éµÄÆäËûÈËÒ»µ©Éæ¼°µ½Õì²ì»ú£¬Òª°Ñ³¤³¤µÄ´úÂë¶ÁÒ»±éÂð£¿ÓÐûÓпÉÄÜÖªµÀÀàµÄËùÓз½·¨µÄ¼òÒªÃèÊö£¿

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//ÒþÐÎÄÜÁ¦µÄ½Ó¿Ú

interface concealAbility

{

public function conceal();

}

//·ÉÐÐÄÜÁ¦µÄ½Ó¿Ú

interface flyAbility

{

public function fly();

}

//Õì²ì»úÀà

class Wraith implements flyAbility, concealAbility

{

   //Õâ¸öº¯Êý±íʾÕì²ì»ú·ÉÐеÄÔËÐдúÂë
   function fly()

   {

      //·ÉÐеÄÔËÐдúÂë

   }

   //Õâ¸öº¯Êý±íʾÕì²ì»úÒþÐεÄÔËÐдúÂë
   function conceal()

   {

      //ÒþÐεÄÔËÐдúÂë

   }

}

 

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