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PHP建立与Mysql之间的连接

数据库 时光弧线 1472浏览 0评论

忠告:写程序切记马虎,不细仔,真是写程序的大忌中的大忌。所以以后写代码务必:细心仔细不骄不燥,才能写出来好代码来,避免迷惘。。

繁写:

<?php
echo “This is a test</br>”;
echo “asdfasdfadsf”;
$mysql_server_name=”localhost”; //数据库服务器名称
$mysql_username=”root”; // 连接数据库用户名
$mysql_password=”??????”; // 连接数据库密码
$mysql_database=”??????”; // 数据库的名字

// 连接到数据库
$conn=mysql_connect($mysql_server_name, $mysql_username,
$mysql_password);

// 从表中提取信息的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);

echo ‘<font face=”verdana”>’;
echo ‘<table border=”1″ cellpadding=”1″ cellspacing=”2″>’;

// 显示字段名称
echo “</b><tr></b>”;
for ($i=0; $i<mysql_num_fields($result); $i++)
{
echo ‘<td

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bgcolor=”#000F00″><b>’.
mysql_field_name($result, $i);
echo “</b></td></b>”;
}
echo “</tr></b>”;
// 定位到第一条记录
mysql_data_seek($result, 0);
// 循环取出记录
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>”;
// 释放资源
mysql_free_result($result);
// 关闭连接
mysql_close($conn);
?>

 

简写:

<?php
$conn=mysql_connect(“localhost”, “root”, “password”);
$result=mysql_db_query(“Database”, “SELECT * FROM `info`”, $conn);
// 获取查询结果
$row=mysql_fetch_row($result);

echo ‘<font face=”verdana”>’;
echo ‘<table border=”1″ cellpadding=”1″ cellspacing=”2″>’;

// 显示字段名称
echo “</b><tr></b>”;
for ($i=0; $i<mysql_num_fields($result); $i++)
{
echo ‘<td bgcolor=”#000F00″><b>’.
mysql_field_name($result, $i);
echo “</b></td></b>”;
}
echo “</tr></b>”;
// 定位到第一条记录
mysql_data_seek($result, 0);
// 循环取出记录
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>”;
// 释放资源
mysql_free_result($result);
// 关闭连接
mysql_close($conn);
?>

 

echo出来的主要是表格

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