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 class A extends father{
    function __construct() {
        echo "abstract<br>";
            parent::base();     //¸¸Àà·½·¨
            $s=$this->stu;    //Ö¸Ïò¸¸ÀàÊôÐÔ
        }
    function A(){}
   function B(){
     $this->A();    //Ö¸Ïò±¾ÀàA·½·¨
}
}


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ubuntu 9.10 °²×° php mysql apache(LAMP)

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1. Ê×ÏȰ²×°SSH
sudo apt-get install ssh
2.°²×°MySQL(ËäÈ»ÏÖÔÚ×îаæÎª5.1£¬µ«ÊÇ»¹Ö»ÄÜ×°5.0°æ±¾)
sudo apt-get install mysql-server-5.0
3.°²×°Apache
sudo apt-get install apache2
4.°²×°PHP
sudo apt-get install php5 libapache2-mod-php5
5.ÖØÆôApache
sudo /etc/init.d/apache2 restart ......

linuxÏÂapache£¬php,mysqlÕûºÏtomcat

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Mysql¡¢Apache¡¢PhpµÄÐ¶ÔØ (Linux)

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[root@localhost ~]# rpm -qa | grep mysql
mysql-3.23.58-9
php-mysql-4.3.4-11
mod_auth_mysql-20030510-4.1
mysql-server-3.23.58-9
˵Ã÷£ºrpm –qa | grep mysql ÃüÁîÊÇΪÁ˰ÑmysqlÏà¹ØµÄ°ü¶¼ÁгöÀ´£¬Ð¶Ôض¼´Ó×îÏÂÃæµÄÒ»¸ö°ü¿ªÊ¼£¬Ö±µ½Ð¶ÔصôµÚÒ»¸öΪֹ¡£Ö´ÐÐrpm -q php£¬Èç¹û·µ»Øphp°æ±¾£¬ ......

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1.Êý¾Ý¿â³£ÓõÄ×Ö¶ÎÀàÐÍ£º
ÕûÊýÐÍ: TINYINT(0-255×Ö¶Î), SMALLINT(´óµã), INT(¸ü³¤), BIGINT;
СÊýÐÍ: FLOAT, BOUBLE, DECIMAL(M(ÕûÊý),D£¨Ð¡Êý£©);
×Ö·ûÐÍ: CHAR(¹Ì¶¨), VARCHAR(µ¯ÐÔ×Ö·ûÐÍ£¬¼õ»ºÈÝÁ¿);£¨××Ö·ûΪ255£©
ÈÕÆÚÐÍ: DATETIME£¨ÈÕÆÚʱ¼ä£©, DATE£¨ÈÕÆÚ£©, TIMESTAMP£¨ÈÕÆÚת»¯ÎªÊý×Ö.¾«¶È ......

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