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PHPÊÇÈõÀàÐÍÓïÑÔ£¬Ïò·½·¨´«µÝ²ÎÊýʱºòÒ²²»Ì«Çø·ÖÀàÐÍ¡£ÕâÑùµÄʹÓûáÒýÆðºÜ¶àµÄÎÊÌ⣬PHP¿ª·¢ÕßÈÏΪ£¬ÕâЩÎÊÌâÓ¦¸ÃÊÇÓÉ´úÂëÊéдÕßÔÚÊéд´úÂëʱ½øÐмìÑéÒÔ±ÜÃ⡣ûÓÐÀàÐÍÌáʾºÜΣÏÕ¡£
<?php
class NormalUser
{
/*
* ÆäËüÏà¹Ø´úÂë..Ê¡ÂÔ........
*/
private $age;
public function setAge($_age) {
$this->age = $_age;
}
public function getAge() {
return $this->age ;
}
}
$normalUser = new NormalUser();
$normalUser->setAge("I am tom"); //ÕâÀïÎÒÃÇ´«ÊäÒ»¸ö·ÇÊýÖµ
echo "age is " . $normalUser->getAge(); //×¢ÒâÊä³ö½á¹û²»ÊÇÎÒÏëÒªµÄÀàÐÍ
?>
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PHPÖÐÌṩÁËһЩº¯Êý£¬À´ÅжÏÊýÖµµÄÀàÐÍ¡£ÎÒÃÇ¿ÉʹÓÃis_numeric()¡£ÅжÏÊÇ·ñÊÇÒ»¸öÊýÖµ»òÕß¿Éת»»ÎªÊýÖµµÄ×Ö·û´®¡£
ÆäËüÏà¹ØµÄ»¹ÓÐis_bool()¡¢is_int()¡¢is_float()¡¢is_integer()¡¢is_numeric()¡¢is_string()¡¢is_array() ºÍ is_object()¡£
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<?php
class NormalUser
{
/*
* ÆäËüÏà¹Ø´úÂë..Ê¡ÂÔ........
*/
private $age;
public function setAge($_age) {
if (is_numeric($_age)) {
$this->age = $_age;
}
}
public function getAge() {
return $this->age ;
}
}
$normalUser = new NormalUser();
$normalUser->setAge("I am tom"); //ÕâÀïÎÒÃÇ´«ÊäÒ»¸ö·ÇÊýÖµ.
echo "age is " . $normalUser->getAge(); //¿´µ½ÕâÀïµÄ½á¹ûΪ¿Õ.
echo "<br />";
$normalUser->setAge("100");
echo "age is " . $normalUser->getAge(); // ÕâÀï¾ÍÓÐÁ˽á¹û.
?>
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ÏÂÃæµÄ´úÂëÓÃÆðÀ´ºÜÕý³£¡£
<?php
class NOrmalUser
{
private $name;
function setName($_name) {
$this->name = $_name;
}
function getName() {
return $this->name;
}
}
class UserAdmin
{
//ÕâÀﶨÒåµÄ²ÎÊý£¬µÚÒ»¸öÊÇUserÀàµÄʵÀý£¬µÚ¶þ¸öÊÇÒªÉèÖõÄÃû×Ö
static function changeName($_user, $_name) {
$_user->setName($_name);
}
}
$normalUser = new NOrmalUser();
UserAdmin::changeName($normalUser, "tom");
echo "username is " . $normalUser->getName();
?>


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