摘要：$str = '<a href="http://www.baidu.com"></a>';preg_match('/href=[\'|\"](\S+)[\'|\"]/i',$str,$result);echo $result[1]; 阅读全文

摘要：<?php$data=array( 0=>array('one'=>34,'two'=>'d'), 1=>array('one'=>45,'two'=>'e'), 2=>array('one'=>47,'two'=>'h'), 3=>array('one'=>12,'two'=>'c'), 4=>a 阅读全文

摘要：function getNum($n){ //获取1-100的阶乘 for ($i=1;$i<=$n;$i++){ $res += $i; } return $res;}print getNum(100); function getNum($n){ //获取1-100的阶乘 $sum= $i = 0 阅读全文

摘要：function getNum($n){ //获取1-100的阶乘 $res = 1; for ($i=1;$i<=$n;$i++){ $res *= $i; } return $res;}print getNum(4); 阅读全文