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增加了数据库操作函数 #3

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94 changes: 94 additions & 0 deletions _lp/core/lib/db.function.php
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -158,4 +158,98 @@ function close_db( $db = NULL )
mysql_close( $db );
}

// ==================================================================
//
// 插入数据
//
// ------------------------------------------------------------------


function db_insert($table,$data,$replace=false){
if(is_string($data)){
$data=db_create($data);
}
$keys=array_keys($data);
$values=array_values($data);
$values=array_map('s', $values);//安全过滤
$type=$replace?'REPLACE':'INSERT';
return run_sql("{$type} INTO `{$table}`(`".implode("`,`", $keys)."`) VALUES('".implode("','", $values)."')");
}

// ==================================================================
//
// 更新数据
//
// ------------------------------------------------------------------

function db_update($table,$data,$where){
if(is_string($data)){
$data=db_create($data);
}
$fields=array();
foreach($data as $key=>$value){
$fields[]="`{$key}`='".s($value)."'";//安全过滤
}
return run_sql("UPDATE `{$table}` SET ".implode(',', $fields)." WHERE {$where}");
}

// ==================================================================
//
// 创建数据
// $data的格式：
// field1,field2,field3
// or
// fiedl1,field2,field3:fun // 使用过滤函数过滤
// or
// field1,^field2,field3|fun,filed4:fun
// or
//！field1,field2,filed3:fun
//
// ------------------------------------------------------------------

function db_create($data){
//判断是否为非模式，字符串以！开头
if('!'==substr($data, 0,1)){
$not=true;
//如果为非模式，去掉开头的！
$data=substr($data,1);
}else{
$not=false;
}
$field_filter=explode(':', $data);
//提取字段
$fields=explode(',', $field_filter[0]);
//提取过滤函数
$filter=isset($field_filter[1])?$field_filter[1]:false;
$postData=$_POST;
if($not){//非模式的处理
foreach ($fields as $field ){
unset($postData[$field]);
}
if($filter) $postData=array_map($filter, $postData);
return $postData;
}
$result=array();
//循环字段
foreach ($fields as $field) {
$not_filter=false;
//字段如以^开头，不进行过滤函数过滤。
if('^'==substr($field, 0,1)){
$not_filter=true;
$field=substr($field, 1);
}
//字段如果有|隔开一个函数名还需要用单独的过滤函数过滤
$field_single=explode('|', $field);
$field=$field_single[0];
$single_filter=isset($field_single[1])?$field_single[1]:false;
//数据过滤
if($single_filter) $postData[$field]=$single_filter($postData[$field]);
if($filter) $postData[$field]=$filter($postData[$field]);
//加入result
$result[$field]=$postData[$field];
}
return $result;

}

?>
94 changes: 94 additions & 0 deletions _lp/core/lib/db.sae.function.php
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -200,4 +200,98 @@ function close_db( $db = NULL )
mysql_close( $db );
}

// ==================================================================
//
// 插入数据
//
// ------------------------------------------------------------------


function db_insert($table,$data,$replace=false){
if(is_string($data)){
$data=db_create($data);
}
$keys=array_keys($data);
$values=array_values($data);
$values=array_map('s', $values);//安全过滤
$type=$replace?'REPLACE':'INSERT';
return run_sql("{$type} INTO `{$table}`(`".implode("`,`", $keys)."`) VALUES('".implode("','", $values)."')");
}

// ==================================================================
//
// 更新数据
//
// ------------------------------------------------------------------

function db_update($table,$data,$where){
if(is_string($data)){
$data=db_create($data);
}
$fields=array();
foreach($data as $key=>$value){
$fields[]="`{$key}`='".s($value)."'";//安全过滤
}
return run_sql("UPDATE `{$table}` SET ".implode(',', $fields)." WHERE {$where}");
}

// ==================================================================
//
// 创建数据
// $data的格式：
// field1,field2,field3
// or
// fiedl1,field2,field3:fun // 使用过滤函数过滤
// or
// field1,^field2,field3|fun,filed4:fun
// or
//！field1,field2,filed3:fun
//
// ------------------------------------------------------------------

function db_create($data){
//判断是否为非模式，字符串以！开头
if('!'==substr($data, 0,1)){
$not=true;
//如果为非模式，去掉开头的！
$data=substr($data,1);
}else{
$not=false;
}
$field_filter=explode(':', $data);
//提取字段
$fields=explode(',', $field_filter[0]);
//提取过滤函数
$filter=isset($field_filter[1])?$field_filter[1]:false;
$postData=$_POST;
if($not){//非模式的处理
foreach ($fields as $field ){
unset($postData[$field]);
}
if($filter) $postData=array_map($filter, $postData);
return $postData;
}
$result=array();
//循环字段
foreach ($fields as $field) {
$not_filter=false;
//字段如以^开头，不进行过滤函数过滤。
if('^'==substr($field, 0,1)){
$not_filter=true;
$field=substr($field, 1);
}
//字段如果有|隔开一个函数名还需要用单独的过滤函数过滤
$field_single=explode('|', $field);
$field=$field_single[0];
$single_filter=isset($field_single[1])?$field_single[1]:false;
//数据过滤
if($single_filter) $postData[$field]=$single_filter($postData[$field]);
if($filter) $postData[$field]=$filter($postData[$field]);
//加入result
$result[$field]=$postData[$field];
}
return $result;

}

?>