PHP与MYSQL交互函数表学习笔记 - PHP

最近一直在研究PHP与MYSQL，感觉PHP与MYSQL交互的函数都是过程化的，当然也有mysqli扩展，面向对象，Java和C#写多了之后，再写PHP，有些不适应，感觉又回到了学C的年代。今天学习了一些函数，记录下来，以便日后忘记时，可以参考。

<TABLE style="WIDTH: 1066pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=1420 border=0 x:str="">
<COLGROUP>
<COL style="WIDTH: 124pt; mso-width-source: userset; mso-width-alt: 5280" width=165></COL>
<COL style="WIDTH: 154pt; mso-width-source: userset; mso-width-alt: 6560" width=205></COL>
<COL style="WIDTH: 544pt; mso-width-source: userset; mso-width-alt: 23200" width=725></COL>
<COL style="WIDTH: 244pt; mso-width-source: userset; mso-width-alt: 10400" width=325></COL></COLGROUP>
<TBODY>
<TR style="HEIGHT: 20.1pt; mso-height-source: userset" height=26>
<TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 20.1pt; BACKGROUND-COLOR: silver" width=165 height=26>说明</TD>
<TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: silver" width=205>函 数 名</TD>
<TD class=xl27 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: silver" width=725>函 数 详 细</TD>
<TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: silver" width=325>函数说明</TD></TR>
<TR style="HEIGHT: 36pt; mso-height-source: userset" height=48>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 36pt; BACKGROUND-COLOR: transparent" width=165 height=48>建立数据库连接</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_connect()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>resource mysql_connect([string hostname [:port] [:/path/to/socket] [, string username] [, string password]])示例：$conn = @mysql_connect("localhost", "username", "password") or dir("不能连接到Mysql Server");</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>使用该连接必须显示的关闭连接</TD></TR>
<TR style="HEIGHT: 36pt; mso-height-source: userset" height=48>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 36pt; BACKGROUND-COLOR: transparent" width=165 height=48>建立数据库连接</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_pconnect()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>resource mysql_pconnect([string hostname [:port] [:/path/to/socket] [, string username] [, string password]])示例：$conn = @mysql_pconnect("localhost", "username", "password") or dir("不能连接到Mysql Server");</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>使用该连接函数不需要显示的关闭连接，它相当于使用了连接池</TD></TR>
<TR style="HEIGHT: 60pt; mso-height-source: userset" height=80>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 60pt; BACKGROUND-COLOR: transparent" width=165 height=80>关闭数据库连接</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_close()</TD>
<TD class=xl29 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>$conn = @mysql_connect("localhost", "username", "password") or die("不能连接到Mysql Server");@mysql_select_db("MyDatabase") or die("不能选择这个数据库，或数据库不存在");echo "你已经连接到MyDatabase数据库";mysql_close();</TD>
<TD class=xl32 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>　</TD></TR>
<TR style="HEIGHT: 48pt; mso-height-source: userset" height=64>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 48pt; BACKGROUND-COLOR: transparent" width=165 height=64>选择数据库</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_select_db()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>boolean mysql_select_db(string db_name [, resource link_id])$conn = @mysql_connect("localhost", "username", "password") or die("不能连接到Mysql Server");@mysql_select_db("MyDatabase") or die("不能选择这个数据库，或数据库不存在");</TD>
<TD class=xl32 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>　</TD></TR>
<TR style="HEIGHT: 80.1pt; mso-height-source: userset" height=106>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 80.1pt; BACKGROUND-COLOR: transparent" width=165 height=106>查询MySQL</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_query()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>resource mysql_query (string query, [resource link_id])$linkId = @mysql_connect("localhost", "username", "password") or die("不能连接到Mysql Server");@mysql_select_db("MyDatabase") or die("不能选择这个数据库，或者数据库不存在");$query = "select * from MyTable";$result = mysql_query($query);mysql_close();</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>若SQL查询执行成功，则返回资源标识符，失败时返回FALSE。若执行更新成功，则返回TRUE，否则返回FALSE</TD></TR>
<TR style="HEIGHT: 69.95pt; mso-height-source: userset" height=93>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 69.95pt; BACKGROUND-COLOR: transparent" width=165 height=93>查询MySQL</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_db_query()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>resource mysql_db_query(string database, string query [, resource link_id])$linkId = @mysql_connect("localhost", "username", "password") or die("不能连接到MysqlServer");$query = "select * from MyTable";$result = mysql_db_query("MyDatabase", $query);mysql_close();</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>为了使代码清晰，不推荐使用这个函数调用</TD></TR>
<TR style="HEIGHT: 75pt; mso-height-source: userset" height=100>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 75pt; BACKGROUND-COLOR: transparent" width=165 height=100>获取和显示数据</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_result()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>mixed mysql_result (resource result_set, int row [, mixed field])$query = "select id, name from MyTable order by name";$result = mysql_query($query);$c_id = mysql_result($result, 0, "id");$c_name = mysql_result($result, 0, "name");</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>最简单、也是效率最低的数据获取函数</TD></TR>
<TR style="HEIGHT: 80.1pt; mso-height-source: userset" height=106>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 80.1pt; BACKGROUND-COLOR: transparent" width=165 height=106>获取和显示数据</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_fetch_row()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>array mysql_fetch_row (resource result_set)$query = "select id, name from MyTable order by name";$result = mysql_query($query);while (list($id, $name) = mysql_fetch_row($result)) { echo("Name: $name ($id) ");}</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>函数从result_set中获取整个数据行，将值放在一个索引数组中。通常会结使list()函数使用</TD></TR>
<TR style="HEIGHT: 110.1pt; mso-height-source: userset" height=146>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 110.1pt; BACKGROUND-COLOR: transparent" width=165 height=146>获取和显示数据</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_fetch_array()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>array mysql_fetch_array (resource result_set [, int result_type])$query = "select id, name from MyTable order by name";$result = mysql_query($query);while($row = mysql_fetch_array($result, MYSQL_ASSOC)) { $id = $row["id"]; $name = $row["name"]; echo "Name: $name ($id) ";}</TD>
<TD class=xl32 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>result_type的值有：MYSQL_ASSOC: 字段名表示键，字段内容为值MYSQL_NUM: 数值索引数组，操作与mysql_fetch_ros()函数一样MYSQL_BOTH: 即作为关联数组又作为数值索引数组返回。result_type的默认值。</TD></TR>
<TR style="HEIGHT: 36pt; mso-height-source: userset" height=48>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 36pt; BACKGROUND-COLOR: transparent" width=165 height=48>获取和显示数据</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_fetch_assoc()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>array mysql_fetch_assoc (resource result_set)相当于调用 mysql_fetch_array(resource, MYSQL_ASSOC);</TD>
<TD class=xl32 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>　</TD></TR>
<TR style="HEIGHT: 99.95pt; mso-height-source: userset" height=133>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 99.95pt; BACKGROUND-COLOR: transparent" width=165 height=133>获取和显示数据</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_fetch_object()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>object mysql_fetch_object(resource result_set)$query = "select id, name from MyTable order by name";while ($row = mysql_fetch_object($result)) { $id = $row->id; $name = $row->name; echo "Name: $name ($id) ";}</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>在操作上与mysql_fetch_array()相同</TD></TR>
<TR style="HEIGHT: 54pt; mso-height-source: userset" height=72>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 54pt; BACKGROUND-COLOR: transparent" width=165 height=72>所选择的记录</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_num_rows()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>int mysql_num_rows(resource result_set)#query = "select id, name from MyTable where id > 65";$result = mysql_query($query);echo "有".mysql_num_rows($result)."条记录的ID大于65";</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>只在确定select查询所获取的记录数时才有用。</TD></TR>
<TR style="HEIGHT: 60pt; mso-height-source: userset" height=80>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 60pt; BACKGROUND-COLOR: transparent" width=165 height=80>受影响的记录</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_affected_rows()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>int mysql_affected_rows([resource link_id])$query = "update MyTable set name='CheneyFu' where id>=5";$result = mysql_query($query);echo "ID大于等于5的名称被更新了的记录数：".mysql_affected_rows();</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>该函数获取受INSERT,UPDATE或DELETE更新语句影响的行数</TD></TR>
<TR style="HEIGHT: 99.95pt; mso-height-source: userset" height=133>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 99.95pt; BACKGROUND-COLOR: transparent" width=165 height=133>获取数据库列表信息</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_list_dbs()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>resource mysql_list_dbs([resource link_id])mysql_connect("localhost", "username", "password");$dbs = mysql_list_dbs();echo "Databases: ";while (list($db) = mysql_fetch_rows($dbs)) { echo "$db ";}</TD>
<TD class=xl32 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>　</TD></TR>
<TR style="HEIGHT: 36pt; mso-height-source: userset" height=48>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 36pt; BACKGROUND-COLOR: transparent" width=165 height=48>获取数据库名</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_db_name()</TD>
<TD class=xl30 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">string mysql_db_name(resource result_set, integer index)</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>该函数获取在mysql_list_dbs()所返回result_set中位于指定index索引的数据库名</TD></TR>
<TR style="HEIGHT: 80.1pt; mso-height-source: userset" height=106>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 80.1pt; BACKGROUND-COLOR: transparent" width=165 height=106>获取数据库表列表</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_list_tables()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>resource mysql_list_tables(string database [, resource link_id])mysql_connect("localhost", "username", "password");$tables = mysql_list_tables("MyDatabase");while (list($table) = mysql_fetch_row($tables)) { echo "$table ";}</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>该函数获取database中所有表的表名</TD></TR>
<TR style="HEIGHT: 99.95pt; mso-height-source: userset" height=133>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 99.95pt; BACKGROUND-COLOR: transparent" width=165 height=133>获取数据库表名</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_tablename()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>string mysql_tablename(resource result_set, integer index)mysql_connect("localhost", "username", "password");$tables = mysql_list_tables("MyDatabase");$count = -1;while (++$count < mysql_numrows($tables)) { echo mysql_tablename($tables, $count)." ";}</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>该函数获取mysql_list_tables()所返回result_set中位于指定index索引的表名</TD></TR>
<TR style="HEIGHT: 180pt; mso-height-source: userset" height=240>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 180pt; BACKGROUND-COLOR: transparent" width=165 height=240>获取字段信息</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_fetch_field()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>object mysql_fetch_field(resource result [, int field_offset])mysql_connect("localhost", "username", "password");mysql_select_db("MyDatabase");$query = "select * from MyTable";$result = mysql_query($query);$fields = mysql_num_fields($result);for($count = 0; $count < $fieds; $count++) { $field = mysql_fetch_field($result, $count); echo "$field->name $field->type ($field->max_length) ";}</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>返回的对象共有12个对象属性：name: 字段名table: 字段所在的表max_length: 字段的最大长度not_null: 如果字段不能为null，则为1，否则0primary_key: 如果字段为主键，则为1，否则0unique_key: 如果字段是唯一键，则为1， 否则0multiple_key: 如果字段为非唯一，则为1，否则0numeric: 如果字段为数值则为1，否则0blob: 如果字段为BLOB则为1，否则为0type: 字段的数据类型unsigned: 如果字段为无符号数则为1，否则为0zerofill: 如果字段为“零填充”则为1， 否则为0</TD></TR>
<TR style="HEIGHT: 60pt; mso-height-source: userset" height=80>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 60pt; BACKGROUND-COLOR: transparent" width=165 height=80>获取查询的字段数</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_num_fields()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>integer mysql_num_fields (resource result_set)$query = "select id, name from MyTable order by name";$result = mysql_query($query);echo "这个查询的字段数是：".mysql_num_fields($result)." ";</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>返回查询result_set中的字段数</TD></TR>
<TR style="HEIGHT: 50.1pt; mso-height-source: userset" height=66>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 50.1pt; BACKGROUND-COLOR: transparent" width=165 height=66>获取指定表的所有字段的字段名</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_list_fields()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>resource mysql_list_fields (string database_name, string table_name [, resource link_id])$fields = mysql_list_fields("MyDatabase", "MyTable");echo "数据库MyDatabase中表MyTable的字段数： ".mysql_num_fields($fields)." ";</TD>
<TD class=xl32 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>　</TD></TR>
<TR style="HEIGHT: 20.1pt; mso-height-source: userset" height=26>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 20.1pt; BACKGROUND-COLOR: transparent" width=165 height=26>获取指定的字段选项</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_field_flags()</TD>
<TD class=xl30 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">string mysql_field_flags (resource result_set, integer field_offset)</TD>
<TD class=xl32 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>　</TD></TR>
<TR style="HEIGHT: 80.1pt; mso-height-source: userset" height=106>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 80.1pt; BACKGROUND-COLOR: transparent" width=165 height=106>获取指定的字段的最大长度</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_field_len()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>integer mysql_field_len (resource result_set, integer field_offset)$query = "select name from MyTable";$result = mysql_query($query);$row = mysql_fetch_row($result);echo mysql_field_len($result, 0)." ";</TD>
<TD class=xl31 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>如果mysql_field_len($reseult, 0) = 16777215那么numer_format(mysql_field_len($result))等于16,777,215</TD></TR>
<TR style="HEIGHT: 69.95pt; mso-height-source: userset" height=93>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 69.95pt; BACKGROUND-COLOR: transparent" width=165 height=93>获取字段名</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_field_name()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>string mysql_field_name (resource result_set, int field_offset)$query = "select id as PKID, name from MyTable order by name";$result = mysql_query($query);$row = mysql_fetch_row($result);echo mysql_field_name($result, 0); // Result: PKID</TD>
<TD class=xl32 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>　</TD></TR>
<TR style="HEIGHT: 69.95pt; mso-height-source: userset" height=93>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 69.95pt; BACKGROUND-COLOR: transparent" width=165 height=93>获取字段类型</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_field_type()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>string mysql_field_type (resource result_set, int field_offset)$query = "select id, name from MyTable order by name";$result = mysql_query($query);$row = mysql_fetch_row($result);echo mysql_field_type($result, 0); // Result: int</TD>
<TD class=xl32 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 244pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=325>　</TD></TR>
<TR style="HEIGHT: 69.95pt; mso-height-source: userset" height=93>
<TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 124pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 69.95pt; BACKGROUND-COLOR: transparent" width=165 height=93>获取字段所在表名</TD>
<TD class=xl26 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 154pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=205>mysql_field_table()</TD>
<TD class=xl28 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 544pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=725>string mysql_field_table (resource result_set, int field_offset)$query = "select id as PKID, name from MyTable order by name";$result = mysql_query($query);$row = mysql_fetch_row($result);echo mysql_field_table($result, 0); // Result: MyTable</TD></TR></TBODY></TABLE>