//select a database to work with$selected = mssql_select_db($myDB,
$dbhandle) or die(Couldn’t open database $myDB);

内需安装微软自带的php_sqlsrv,安装好后一直链接失利。

$str=$pdo->prepare(“select fid,username,password from user order by
id”);
$str->execute();
 
$str->bindColumn(“id”,$id);
$str->bindColumn(“username”,$username);
$str->bindColumn(3,$password);
 
while($str->fetch()){
echo “$id | $username | $password <br>”;
}
echo “总记录数:”.$str->rowCount(卡塔尔.”<br>”;
echo “总字段数:”.$str->columnCount(卡塔尔.”<br>”;

I说PHP就亟须提MySQL,而要讲MySQL,那么PHP也是必然要被谈到。PHP的高效崛起,离不开MySQL,而MySQL的广泛应用,也与PHP皮之不存毛将焉附。上边详细深入分析PHP4中与MySQL相关操作的函数:1.
老是数据库服务器(database server卡塔尔国的函数:(1State of Qatar.mysql_connect()格式:int
mysql_connect(string [hostname] [ort],string [username],string
[password]卡塔尔;参数中的port参数表示数据库服务器的端口号,平时用它的默许端口号就能够了。假使不填任何参数,则默许的hostname为localhost,username为root,password为空。函数推行成功,重临三个int
类型的连接号(link_identifier卡塔尔国,实行倒闭,重返false值。例子:$connect =
mysql_connect(“localhost”,”user”,”password”);if($connect) echo “Connect
Successed!”; //连接成功,显示Connect Successed!else echo “Connect
Failed!”; //连接退步,呈现Connect
Failed!?在上例中,如mysql_connect(卡塔尔国实践停业,将展现系统的荒唐指示,而后继续往下进行。那,该怎么着屏蔽这一个种类的大谬不然提醒并在失利后截至程序?在MySQL中,允许在数据库函数从前拉长@符号,屏蔽系统的不当提示,同时用die(卡塔尔(قطر‎函数给出更易精通的荒谬提醒,然后die(卡塔尔函数将电动退出程序。上例能够改为:$connect
= @mysql_connect(“localhost”,”user”,”password”) or die (“Unable to
connect database server!”);?如mysql_connect(卡塔尔国实践停业,将显示 Unable to
connect database server!后,退出程序。(2State of Qatar.mysql_pconnect()格式:int
mysql_pconnect(string [hostname] [ort],string [username],string
[password]卡塔尔国;此函数与(1卡塔尔(قطر‎的mysql_connect(卡塔尔(قطر‎基本相仿,差距在于:———
当数据库操作截至之后
,由(1卡塔尔国的mysql_connect(卡塔尔创立的接连将活动关闭,而(2卡塔尔(قطر‎的mysql_pconnect(卡塔尔创立的接连几天将三翻五次存在,是一种牢固漫长的连年。———
在(2卡塔尔的mysql_pconnect(),每趟一而再前,都会检查是还是不是有选拔相符的hostname,use,password的连续几天,假若有,则一向动用那么些连接号。———
(1State of Qatar的mysql_connect(卡塔尔(قطر‎组建的连接能够用mysql_close()关闭,而(2)的mysql_pconnect()不能用mysql_close(卡塔尔来关闭。2.闭馆数据库连接函数(1个State of Qatar:mysql_close()格式:int
mysql_close(int
link_identifier);关闭由mysql_connect(卡塔尔(قطر‎函数创建的连接,实践成功,重回ture值,失败则赶回false值。例子如下:$connect
= @mysql_connect(“hostname”,”user”,”password”) or die(“Unable to
connect database server!”);$close = @mysql_close($connect) or die
(“Unable to close database server
connect!”);?注:mysql_close(卡塔尔(قطر‎不可能关闭由mysql_pconnect(卡塔尔(قطر‎函数创设的连接。3.增选数据库函数(1个卡塔尔:mysql_select_db()格式:int
mysql_select_db(string database name , int
link_identifier卡塔尔国;选拔钦命的database name
,成功,再次来到1个真值,退步,则赶回1个False值例子1:$select =
mysql_select_db(/’forum/’ , $connect);if($select){echo “connect db
forum successed!”;}else{echo “connect db forum failed!”;}?例子2:$select
= mysql_select_db(“forum”,$connect) or die(“Can not connect this
DB!”State of Qatar;?注:此函数也就是在MySQL中的USE语句:如 USE
forum4.SQL查询函数(2个卡塔尔:1、mysql_query()格式:int mysql_query(string
sqlquery , int
link_identifierState of Qatar;向劳动器发一段正式SQL语句哀告。假如失利,则赶回一False值。例子:$connect
= mysql_connect($hostname,$user,$pwd);$select =
mysql_select_db($dbname,$connect);$query = mysql_query($sql ,
$connect);if($query) echo “Successed !”;else echo “Failed
!”;?此函数必要求与mysql_select_db(卡塔尔(قطر‎函数协作使用,单独选拔它就从不意义了!2、mysql_db_query()格式:int
mysql_db_query(string database , string sqlquery , int
link_identifier卡塔尔国;在这里函数中必得钦命数据库名database和SQL语句sqlquery,如退步则赶回False。例子:$connect
= mysql_connect($hostname , $user , $pwd);$query =
mysql_db_query($dbname , $sql , $connect);if($query) echo “Successed
!”;else echo “Failed
!”;?mysql_db_query()与mysql_query(State of Qatar的区分就在于前面三个能够绝不选取mysql_select_db(卡塔尔来筛选数据库database,而在试行SQL语句的还要,举行选拔数据库。
5.数据库记录操作函数(5个State of Qatar:1、mysql_fetch_array()格式:array
mysql_fetch_array(int
query卡塔尔;实践成功,再次来到1个数组,该数组保存有下一条记下的值,如进行停业,则赶回False值。重回的数组不只能够用下标来表示,也可以用字段名来表示。例子:$query
= mysql_query($sql , $connect);while($arrary =
mysql_fetch_array($query)){echo $array[column1].” |
“.$array[column2];//echo $array[0].” | “.$array[1];}?Note :
数组的下标是从0起始的!2、mysql_fetch_row()格式:array =
mysql_fetch_row(int
query);与1的mysql_fetch_array(卡塔尔函数效用基本相像。差别在于mysql_fetch_row(卡塔尔国只能以数组下标来代表。成功重临1个数组,退步重返False值。例子:$query
= mysql_query($sql , $connect);while($row =
mysql_fetch_row($query)){echo $row[0] . ” | ” . $row[1] . ”
“;}?Note :
mysql_fetch_row(卡塔尔国函数只可以用数组下标来表示,并从0最早。另:mysql_fetch_row()比mysql_fetch_array(卡塔尔(قطر‎实践进程快,并且都以对下一行数据进行读取。3、mysql_result()格式:int
mysql_result(int query , int row , string
filedname);在mysql_result(卡塔尔国中,参数row必需从0初始,参数filedname必需是实际的字段名,不可能用下标来代表。实践成功,重返由数据库中抽取的字段的数值,战败则赶回False值。例子:$query
= mysql_query($sql , $connect);echo mysql_result($query , 0 ,
“column1″).” “;echo mysql_result($query , 1, “column1″).” “;echo
mysql_result($query , 2, “column1″State of Qatar.” “;?Note :
此函数效用少,但使用方便。4、mysql_fetch_object()格式: object
mysql_fetch_object(int
query卡塔尔(قطر‎能对点名的字段进行巡回读取,试行成功,将以对象object的样式再次回到数值,战败则赶回False值。例子:$query
= mysql_query($sql , $connect);while($object =
mysql_fetch_object($query)){echo $object-column1 . ” “;echo
$object-column2 . ” “;echo $object-column3 . ” “;}?Note :
mysql_fetch_object(卡塔尔(قطر‎函数实施成功后归来的是1个对象object
!操作如下:$object-字段名5、mysql_data_seek()格式:int
mysql_data_seek(int row , int
query卡塔尔国;移动游标到钦点的行(row_number卡塔尔实行成功,再次回到真值,退步,再次回到False值。此函数能够与mysql_fetch_array()或mysql_fetch_row(卡塔尔(قطر‎合作使用,即在使用mysql_data_seek(State of Qatar函数之后,就足以用mysql_fetch_array()或mysql_fetch_row(卡塔尔函数来展现钦点的行了。例子:$query
= mysql_query($sql , $connect);$seek = mysql_data_seek($query ,
2);$arrary = mysql_fetch_array($query);echo $array[column1].” “;echo
$array[column2].”
“;?6.数据库级database的操作函数(2个卡塔尔:1、mysql_create_db()格式:int
mysql_create_db(string database name , int
link_identifierState of Qatar;通进程序来树立1个数据库database,当然你也足以用mysql_query()或者mysql_db_query(卡塔尔(قطر‎函数来创建或删除database但大家得以用那些函数更为有扶植地确立1个database。成功重临1个真值,战败,则赶回1个false。例子:$connect
= mysql_connect(“$hostname”,”$user”,”$pwd”);$create =
mysql_create_db(“dbtest” , $connect);if($create) echo “create database
dbtest successed!”;else echo “create database dbtest
failed!”;?2、mysql_drop_db()格式:int mysql_drop_db(string database
name , int
link_identifierState of Qatar;通进度序来删除1个数据库database。但我们可以用那么些函数更为有助于地删除1个database。成功重返1个真值,失败,则赶回1个false。例子:$connect
= mysql_connect(“$hostname”,”$user”,”$pwd”);$create =
mysql_drop_db(“dbtest” , $connect);if($create) echo “drop database
dbtest successed!”;else echo “drop database dbtest failed!”;?Note :
如用mysql_query()或mysql_db_query(卡塔尔国,则SQL语句应该为:(1卡塔尔国create
database dbtest(2卡塔尔drop database dbtest 7)数据库新闻函数:1、mysql_fetch_field()格式:object
mysql_fetch_field(int query , int
[field_offset]卡塔尔(قطر‎;重临1个指标,即一哈希表,下标有:table : 表名name :
字段名max_length : 该字段的最大尺寸not_null : 字段为not
null则赶回1,不然重临0primary_key : 字段为primary
key则赶回1,不然重返0unique_key : 字段为unique
key则赶回1,不然重回0multiple_key : 字段为非unique
key则赶回1,不然重临0numeric : 字段为numeric则赶回1,不然重临0blob :
字段为blob则赶回1,不然再次来到0type : 字段的类型unsigned :
字段为unsigned则赶回1,不然再次来到0zerofill : 字段为zero
filled则赶回1,不然重返0援用格式为:对象名-下标名使用此函数可以赢得表名、字段名、类型…….例子:$query
= mysql_query($sql , $connect);while($object =
mysql_fetch_field($query)){echo “table name : “.$object-table.” “;echo
“field name : “.$object-name.” “;echo “primary key :
“.$object-primary_key.” “;echo “not null : “.$object-not_null.” “;echo
“field type : “.$object-type.” “;echo “field max length :
“.$object-max_length.” “;}?Note :
哈希表的是从0坐标初阶的,即首先个字段为哈希表中的0项。假若大家想一向拿走哈希表的第三项即第多少个字段的音讯,可用如下格式:$query
= mysql_query($sql , $connect);$object = mysql_fetch_field($query ,
2);echo “table name : “.$object-table.” “;echo “field name :
“.$object-name.” “;echo “primary key : “.$object-primary_key.” “;echo
“not null : “.$object-not_null.” “;echo “field type : “.$object-type.”
“;echo “field max length : “.$object-max_length.”
“;?其实这也得以经过上边那么些函数来达成平等的指标。2、mysql_field_seek()格式:int
mysql_field_seek(int $query , int
field_offset卡塔尔;将游标移到钦定的字段上。例子:$query = mysql_query($sql
, $connect);$seek = mysql_field_seek($query , 2);$object =
mysql_fetch_field($query);echo “table name : “.$object-table.” “;echo
“field name : “.$object-name.” “;echo “primary key :
“.$object-primary_key.” “;echo “not null : “.$object-not_null.” “;echo
“field type : “.$object-type.” “;echo “field max length :
“.$object-max_length.” “;?那样也达到与上例相近的渴求。8)取数据库名和表名:1、mysql_list_dbs()格式: int mysql_list_dbs(int
link_identifier卡塔尔(قطر‎;得到富有可用的数据库名(database name卡塔尔。例子:$connect
= mysql_connect($host , $usr ,$pwd);$dbs =
mysql_list_dbs($connect);$rows = mysql_num_rows($dbs);echo “database
total : “.$rows;$i = 0;while($i$rows){$db_name[$i] =
mysql_tablename($dbs , $i);echo
$db_name[$i];$i++;}?即可依次彰显出MySQL中兼有的数据库名字。Note :
约等于MySQL中的 show databases命令2、mysql_list_tables()格式:int
mysql_list_tables(string database
nameState of Qatar;展现该数据库下具有的表的名字Table name。例子:$connect =
mysql_connect($host , $usr , $pwd);$tables =
mysql_list_tables(“mysql”);$rows = mysql_num_rows($tables);echo
“Table total : “.$rows;$i = 0;while($i$rows){$table_name[$i] =
mysql_tablename($tables , $i);echo
$table_name[$i];$i++;}?就可以依次展现出mysql下有所的表的名字Note :
相当于MySQL中的 show tables命令(先要用 use mysql命令选中1个数据库卡塔尔(قطر‎

//execute the SQL query and return records$result =
mssql_query($query);

$query = “SELECT top 12 * 数据库名称 order by id desc”;

措施2: 绑定索引数组

// Analyze text blocks taking into account character transformations

1、odbc

格局1: 绑定关联数组

//close the connection odbc_close ($conn); } else echo odbc not
connected; ?=======================

2、连接mssql2000

 代码如下

// Check if an object includes data stream. if
(preg_match(#stream(.*)endstream#ismU, $currentObject,

本条从未怎么差距,分别是odbc_close();和mssql_close()和sqlsrv_close();

改:

echo table border=1tr;

好了上边的授命正是我们给各位收拾的了啊,希望随笔能够援助到各位。

 // 从表中提取音信的sql语句
$strsql=”SELECT * FROM `gbook`”;
// 执行sql查询
$result=mysql_db_query($mysql_database, $strsql, $conn);
// 获取查询结果
$row=mysql_fetch_row($result);

and return results. return getTextUsingTransformations($texts,
$transformations); }

二、输入查询代码

格局3:单个收取,循环遍历,绑定字段名到变量

?php$myServer = localhost;$myUser = your_name;$myPass =
your_password;$myDB = examples;

三、组建查询并收取数据

// 呈现字段名称
echo “</b><tr></b>”;
for ($i=0; $i<mysql_num_fields($result); $i++)
{
  echo ‘<td bgcolor=”#000F00″><b>’.
  mysql_field_name($result, $i);
  echo “</b></td></b>”;
}
echo “</tr></b>”;
// 定位到第一条记下
mysql_data_seek($result, 0);
// 循环收取记录
while ($row=mysql_fetch_row($result))
{
  echo “<tr></b>”;
  for ($i=0; $i<mysql_num_fields($result); $i++ )
  {
echo ‘<td bgcolor=”#00FF00″>’;
echo $row[$i];
echo ‘</td>’;
  }
  echo “</tr></b>”;
}
  
echo “</table></b>”;
echo “</font>”;
// 释放财富
mysql_free_result($result);
// 关闭连接
mysql_close($conn); 

// Get all text data. $transformations = array(); $texts = array();

$con = mssql_connect(‘数据库地址’,’客户名’,’密码’卡塔尔国;

(用mysqli链接MYSQL数据库)
requery_once(“config.ini.php”);
$mysqliObj = new mysqli($dbhost,$dbuser,$dbpwd,$dbname);
if(mysqli_connect_errno()){
 echo “连接战败”.mysqli_connect_error();
 exit();
}
$mysqliObj->query(“set name $charName”);

php 怎么着把pdf文件转变来txt文本文件

一、建设布局连接

连接:

$stream)) { $stream = ltrim($stream[1]);

 

<?php
$conn=mysql_connect(“localhost”, “root”, “123456”) or
die(“数据库三番两次退步”State of Qatar;
mysql_select_db(“test”State of Qatar or
die(“选取数据库失败”卡塔尔;;
$sql=”select * from user”;
$data=mysql_query($sql);
echo ‘<table border=”1″ align=”center” width=”800″>’
while($row=mysql_fetch_assoc($result)){
echo ‘<tr>’;
foreach($row as $col){
echo ‘<td>’.$col.'</td>’;
}
echo ‘</tr>’;
};
echo ‘</table>’;
mysql_close();

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