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string date ( string format [, int timestamp] )     //ÆäÖÐtimestampΪ¿ÉÑ¡£¬Ä¬ÈÏֵΪtime();
date("1");    //Monday
date("m.d.y");   //12.21.09
date("m.d.Y");//12.21.2009
$tomorrow  = mktime(0, 0, 0, date("m")  , date("d")+1, date("Y"));
$lastmonth = mktime(0, 0, 0, date("m")-1, date("d"),   date("Y"));
$nextyear  = mktime(0, 0, 0, date("m"),   date("d"),   date("Y")+1);


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Include “email.class”
$mail->setTo("a@a.com"); //ÊÕ¼þÈË
$mail-> setCC£¨"b@b.com,c@c.com"£©; //³­ËÍ
$mail-> setCC£¨"d@b.com,e@c.com"£©; //ÃØÃܳ­ËÍ
$mail->setfrom(“f@f.com”);//·¢¼þÈË
$mail->setSubject(“Ö÷Ìâ”) ; //Ö÷Ìâ
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<?php
//н¨Ä¿Â¼
mkdir("/path/to/my/dir", 0700); //0700±íʾȨÏÞ×î´ó
//ɾ³ýĿ¼
rmdir("/path/to/my/dir");
//±éÀúĿ¼
$p =dir(/etc/php5);
echo "handler:".$p->handler;
while(false!=$entry=$p->read()){
    echo $entry."\n" ;
}
$p->close();
//Êä³öÎļþÄÚÈÝ
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