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php爱好者> php文档>PHP链接oracle的函数(1)

PHP链接oracle的函数(1)

时间：2007-02-17  来源：PHP爱好者

PHP链接oracle的函数    tianhaiyise（转贴） 
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关键字     PHP链接oracle的函数
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出处     news://news.newsfan.com
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※db_logon() 开启数据库连接
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※db_query() 通用select
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※db_change() 数据库改变的通用函数（insert,delete,update）
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※db_insert() insert,直接调用db_change()
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※db_delete() delete,直接调用db_change()
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※db_update() update,直接调用db_change()
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※db_commit() 事务递交
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※db_rollback() 事务回退
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※db_logoff() 断开数据库连接
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Class c_ora_db
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{
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变量定义
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var $C_user = ""; 数据库用户名
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var $C_passwd = ""; 数据库口令
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var $C_db = ""; 数据库名
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var $I_linkID = 0; 连线句柄
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var $I_stmtID = 0; 查询句柄
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var $color =""; 全局颜色
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函数名：db_logon()
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作 用：开启数据库连接
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参 数：无
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返回值：连线句柄（整型）
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备 注：无
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function db_logon()
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{
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$this->I_linkID = @OCILogon($this->C_user,$this->C_passwd,$this->C_db);
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if ($this->I_linkID == 0){AlertExit('数据库链接失败，请与DBA联系！');}
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return $this->I_linkID;
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}
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函数名：db_query($C_sql,$A_define="",$I_start=-1,$I_end=-1)
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作 用：select
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参 数：$C_sql sql语句
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$A_define 需绑定的字段。数组型
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$I_start 开始取记录 -1则取出查询的所有记录
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$I_end 结束取纪录
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返回值：二维数组($A_rs)
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备 注：通过数字0,1,2....可访问对应字段的值; 或通过查询字段名也可访问对应字段的值
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如通过$A_rs[0][0]或$A_rs[0]['NAME']或$A_rs[0]['name']都可访问首条记录NAME字段
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$I_start,$I_end是配合分页使用的参数。
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function db_query($C_sql,$A_define="",$I_start=-1,$I_end=-1)
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{
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if (!$C_sql){AlertExit("参数不全！");}检查参数
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连接检测
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if ($this->I_linkID == 0){AlertExit('数据库链接失败，请与DBA联系！');}
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格式检测
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$this -> I_stmtID = OCIParse($this -> I_linkID,$C_sql);
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if (!$this -> I_stmtID){AlertExit(' sql格式出错！请与程序员联系');}
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如果没指定绑定的字段，则从SQL语句中去取
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if($A_define=="")
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{
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$A_Cur = explode("select",$C_sql);
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$A_Cur = explode("from",$A_Cur[1]);
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$A_define = explode(",",$A_Cur[0]);
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}
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绑定数据库表字段
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if(gettype($A_define) == "array") 查询列是数组
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{
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for($i=0;$i<count($A_define);$i++)
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{
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$A_define_up[$i] = trim(strtoupper($A_define[$i])); 大写并去除空格
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}
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for($i=0;$i<count($A_define_up);$i++)
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{
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OCIDefineByName($this -> I_stmtID,"$A_define_up[$i]",&$$A_define[$i]); 绑定
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}
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}
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elseif(trim($A_define) <> "") 查询列只有一个
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{
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$A_define_up = trim(strtoupper($A_define));
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OCIDefineByName($this -> I_stmtID,"$A_define_up",&$$A_define);
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}
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执行绑定好的SQL语句
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if(!OCIExecute($this -> I_stmtID))
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{
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echo "<font color=red><b>执行出错:</b></font>SQL Error:<font color=red>$C_sql</font><br>";
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return false;
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}
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$lower = 0; 返回二维数组的第一维下标控制变量
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$cnt = 0; 开始取数标识
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取记录
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while (OCIFetchInto($this -> I_stmtID,&$cur,OCI_ASSOC))
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{
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取查询出来的所有记录
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if ($I_start == -1)
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{
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if (gettype($A_define) == "array") 查询列是数组
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{
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for ($i=0;$i<count($A_define);$i++)
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{
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if ($cur[$A_define_up[$i]] <> $$A_define[$i])
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{
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$$A_define[$i] = $cur[$A_define_up[$i]];
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}
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$A_rs[$lower][$i] = $$A_define[$i]; 用数字访问
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$A_rs[$lower][$A_define[$i]] = $$A_define[$i]; 用小些访问
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$A_rs[$lower][$A_define_up[$i]] = $$A_define[$i]; 用大写访问
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}
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}
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elseif (trim($A_define) <> "") 查询列只有一个
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{
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if ($cur[$A_define_up] <> $$A_define)
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{
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$$A_define = $cur[$A_define_up];
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}
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$A_rs[$lower][0] = $$A_define; 用数字访问
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$A_rs[$lower][$A_define] = $$A_define; 用小写访问
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$A_rs[$lower][$A_define_up] = $$A_define; 用大些访问
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}
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$lower++; 下标加一
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}
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取出指定记录(配合分页使用)
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if ($I_start <> -1)
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{
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if ($cnt >= $I_start)
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{
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$cnt++;
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if ($I_end - $I_start <> 0)
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{
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$I_end--;
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if (gettype($A_define) == "array")
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{
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for($i=0;$i<count($A_define_up);$i++)
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{
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if ($cur[$A_define_up[$i]] <> $$A_define[$i])
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{
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$$A_define[$i] = $cur[$A_define_up[$i]];
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}
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$A_rs[$lower][$i] = $$A_define[$i]; 用数字访问
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$A_rs[$lower][$A_define[$i]] = $$A_define[$i]; 用小些访问
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$A_rs[$lower][$A_define_up[$i]] = $$A_define[$i]; 用大写访问
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}
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}elseif(trim($A_define) <> "")
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{
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if ($cur[$A_define_up] <> $$A_define)
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{
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$$A_define = $cur[$A_define_up];
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}
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$A_rs[$lower][0] = $$A_define; 用数字访问
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$A_rs[$lower][$A_define] = $$A_define; 用小些访问
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$A_rs[$lower][$A_define_up] = $$A_define; 用大写访问
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}
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$lower++;
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}else
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{
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break; 如果$I_end-$I_start=0 表示取完记录并跳出while循环
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}
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}else
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{
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$cnt++; 如果$cnt<$I_start,$cnt++
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}
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}
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} while的结束
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释放句柄并返回查询数据（一个二维数组）
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OCIFreestatement($this -> I_stmtID);
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return $A_rs;
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} function的结束
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函数名：db_change($C_sql,$A_bind)
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作 用：db change
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参 数：$C_sql sql语句
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$A_bind 需绑定的字段。数组型
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返回值：布尔值
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备 注：insert,delete,update通用
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function db_change($C_sql,$A_bind="")
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{
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if (!$C_sql){AlertExit("参数不全！");}检查参数
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连接检测
chi na it p owe r .comnZ7RYArtQ9P01f9Ab5lzZ9r2W
if($this -> I_linkID==""){ AlertExit("我们的数据库正忙，请稍后再连接！");}
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格式检测
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$this -> I_stmtID = OCIParse($this -> I_linkID,$C_sql);
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if (!$this -> I_stmtID){AlertExit(' sql格式出错！请与程序员联系');}
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绑定
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if(gettype($A_bind) == "array")
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{
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for($i=0;$i<count($A_bind);$i++)
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{
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global $$A_bind[$i];
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$$A_bind[$i] = StripSlashes($$A_bind[$i]); 去掉反斜线字元
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$$A_bind[$i] = str_replace("<?","<?",$$A_bind[$i]); 过滤掉PHP标示
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}
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for($i=0;$i<count($A_bind);$i++){
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OCIBindByName($this -> I_stmtID, ":$A_bind[$i]", &$$A_bind[$i], -1); 绑定
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}
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}
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elseif(trim($A_bind) <> "") 不是数组，是字符
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{
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global $$A_bind;
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$$A_bind = StripSlashes($$A_bind);
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$$A_bind = str_replace("<?","<?",$$A_bind); 过滤掉PHP标示
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OCIBindByName($this -> I_stmtID, ":$arrBind", &$$A_bind, -1);
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}
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执行并检测是否成功
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if(!OCIExecute($this -> I_stmtID,OCI_DEFAULT))
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{
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echo "<font color=red><b>执行出错:</b></font>SQL Error:<font color=red>$C_sql</font><br>";
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return false;
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}
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/*传回受影响的行数
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global $I_changenum;
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$I_changenum = OCINumrows($this -> I_stmtID);*/
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释放句柄，传回值
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OCIFreeStatement($this -> I_stmtID);
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return true;
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}
chi na it p owe r .comnZ7RYArtQ9P01f9Ab5lzZ9r2W

chi na it p owe r .comnZ7RYArtQ9P01f9Ab5lzZ9r2W

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函数名：db_delete($C_sql)
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作 用：delete
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参 数：C_sql sql语句
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返回值：布尔值
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备 注：该函数只是为了使用直观,本质调用db_change()
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function db_delete($C_sql)
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{
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return $this -> db_change($C_sql);
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}
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函数名：db_insert($C_sql,A_bind)
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作 用：insert
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参 数：C_sql sql语句
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A_bind 绑定
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返回值：布尔值
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备 注：该函数只是为了使用直观,本质调用db_change()
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function db_insert($C_sql,$A_bind="")
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{
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return $this -> db_change($C_sql,$A_bind);
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}
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函数名：db_update($C_sql,A_bind)
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作 用：update
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参 数：C_sql sql语句
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A_bind 绑定
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返回值：布尔值
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备 注：该函数只是为了使用直观,本质调用db_change()
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function db_update($C_sql,$A_bind="")
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{
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return $this -> db_change($C_sql,$A_bind);
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}
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函数名：db_commit()
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作 用：事务递交
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参 数：无
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返回值：布尔值
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备 注：无
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function db_commit()
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{
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return (OCICommit($this->I_linkID));
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}
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函数名：db_rollback()
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作 用：事务回退
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参 数：无
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返回值：布尔值
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备 注：无
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function db_rollback()
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{
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return (OCIRollback($this->I_linkID));
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}
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函数名：db_logoff()
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作 用：断开数据库连接
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参 数：无
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返回值：布尔值
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备 注：无
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function db_logoff()
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{
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return (OCILogoff($this->I_linkID));
chi na it p owe r .comnZ7RYArtQ9P01f9Ab5lzZ9r2W
}
chi na it p owe r .comnZ7RYArtQ9P01f9Ab5lzZ9r2W

chi na it p owe r .comnZ7RYArtQ9P01f9Ab5lzZ9r2W
※db_logon() 开启数据库连接
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※db_query() 通用select
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※db_change() 数据库改变的通用函数（insert,delete,update）
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※db_insert() insert,直接调用db_change()
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※db_delete() delete,直接调用db_change()
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※db_update() update,直接调用db_change()
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※db_commit() 事务递交
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※db_rollback() 事务回退
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※db_logoff() 断开数据库连接
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Class c_ora_db
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{
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变量定义
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var $C_user = ""; 数据库用户名
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var $C_passwd = ""; 数据库口令
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var $C_db = ""; 数据库名
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var $I_linkID = 0; 连线句柄
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var $I_stmtID = 0; 查询句柄
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var $color =""; 全局颜色
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chi na it p owe r .comnZ7RYArtQ9P01f9Ab5lzZ9r2W
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