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php¶ÔzipÎļþ½âѹºÍѹËõ

<?php
/**
* @author wyt
*
*/
class zip {
private $_zipObj=null;
private $_zipfcArr=array();
private $_basePath=null;
private $_zipName;
/**
* init
* @param zipÎļþÃû³Æ $zipName
*/
function __construct($zipName){
$this->_zipName=$zipName;
$this->_zipObj= ......

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ϵͳ»·¾³Ã»ÅäÖ ......

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      1¡¢mysql Êý¾Ý¿âûÓÐÔöÁ¿±¸·ÝµÄ»úÖÆ£¬µ±Êý¾ÝÁ¿Ì«´óµÄʱºò±¸·ÝÊÇÒ»¸öºÜ´óµÄÎÊÌâ¡£»¹ºÃ mysql Êý¾Ý¿âÌṩÁËÒ»ÖÖÖ÷´Ó±¸·ÝµÄ»úÖÆ£¬Æäʵ¾ÍÊǰÑÖ÷Êý¾Ý¿âµÄËùÓеÄÊý¾Ýͬʱдµ½±¸·ÝÊý¾Ý¿âÖС£ÊµÏÖ mysql Êý¾Ý¿âµÄÈȱ¸·Ý¡£
¡¡¡¡2¡¢ÒªÏëʵÏÖË«»úµÄÈȱ¸Ê×ÏÈÒªÁ˽âÖ÷´ÓÊý¾Ý¿â·þÎñÆ÷µÄ°æ±¾µÄÐèÇó¡£ÒªÊµÏ ......

mysql ²ÎÊý(2)

lect ASIN('foo');
¡¡¡¡-> 0.000000
ATAN(N)
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mysql> select ATAN(2);
¡¡¡¡-> 1.107149
mysql> select ATAN(-2);
¡¡¡¡-> -1.107149
ATAN2(X,Y)
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mysql> select ATAN(-2,2);
¡¡¡¡-> -0.785398
mysql> ......

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Ø  create database Name;
2.  Ñ¡ÔñÊý¾Ý¿â
Ø  use DatabaseName;
3.  Ö±½Óɾ³ýÊý¾Ý¿â£¬²»ÌáÐÑ
Ø  drop database Name;
4.  ɾ³ýÊý¾Ý¿âǰ£¬ÓÐÌáʾ¡£
Ø  drop ......
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