176 lines
3.9 KiB
PHP
176 lines
3.9 KiB
PHP
<?php
|
||
|
||
$global_sql=null;
|
||
|
||
function get_sql()
|
||
{
|
||
global $global_sql;
|
||
|
||
if($global_sql)
|
||
return $global_sql;
|
||
|
||
$global_sql=new mysqli($_SESSION["DB_ADDRESS"],$_SESSION["DB_USERNAME"],$_SESSION["DB_PASSWORD"],$_SESSION["DB_NAME"]);
|
||
|
||
if($global_sql->connect_error)
|
||
{
|
||
echo "Connection Database error: ".$sql->connect_error;
|
||
return null;
|
||
}
|
||
|
||
$global_sql->query("SET NAMES 'utf8'");
|
||
$global_sql->query("USE ".$_SESSION["DB_NAME"]);
|
||
|
||
return $global_sql;
|
||
}
|
||
|
||
function get_field_list($table_name)
|
||
{
|
||
$sql=get_sql();
|
||
|
||
if($sql==null)return null;
|
||
|
||
$sql_result=$sql->query("DESC ".$table_name);
|
||
|
||
if(!$sql_result)
|
||
return null;
|
||
|
||
$field_list=array();
|
||
while ($row = $sql_result->fetch_object())
|
||
$field_list[] = $row->Field;
|
||
|
||
return $field_list;
|
||
}
|
||
|
||
function select_table($table_name,$field_list,$where,$start,$count)
|
||
{
|
||
$sql=get_sql();
|
||
|
||
if($sql==null)return;
|
||
|
||
$sql_string="SELECT";
|
||
|
||
if($field_list==null)
|
||
{
|
||
$sql_string=$sql_string." * FROM ".$table_name;
|
||
}
|
||
else
|
||
{
|
||
for($i=0;$i<count($field_list);$i++)
|
||
if($i==0)
|
||
$sql_string=$sql_string.' '.$field_list[$i];
|
||
else
|
||
$sql_string=$sql_string.','.$field_list[$i];
|
||
|
||
$sql_string=$sql_string." FROM ".$table_name;
|
||
}
|
||
|
||
if($where!=null&&strlen($where)>3)
|
||
$sql_string=$sql_string." WHERE ".$where;
|
||
|
||
if($count!=0)$sql_string=$sql_string." LIMIT ".$start.",".$count;
|
||
|
||
$sql_result=$sql->query($sql_string);
|
||
|
||
$result=array();
|
||
$index=0;
|
||
|
||
while($row=$sql_result->fetch_row())
|
||
{
|
||
$result[$index]=$row;
|
||
$index++;
|
||
}
|
||
|
||
$sql_result->close();
|
||
|
||
return $result;
|
||
}
|
||
|
||
function select_field($table_name,$field,$where)
|
||
{
|
||
$sql=get_sql();
|
||
|
||
if($sql==null)return;
|
||
|
||
$sql_string="SELECT ".$field." FROM ".$table_name." WHERE ".$where;
|
||
|
||
$sql_result=$sql->query($sql_string);
|
||
|
||
if(!$sql_result)
|
||
return null;
|
||
|
||
$row=$sql_result->fetch_object();
|
||
|
||
$sql_result->close();
|
||
return $row;
|
||
}
|
||
|
||
/**
|
||
* 向一个表中插入数据，使用array的kv模式表示字段和数据
|
||
*/
|
||
function sql_insert()//$table_name,$data_array)
|
||
{
|
||
$sql=get_sql();
|
||
|
||
if($sql==null)return null;
|
||
|
||
$table_name=func_get_arg(0);
|
||
$data_array=func_get_arg(1);
|
||
|
||
if(func_num_args()==3)
|
||
$resultmode=func_get_arg(2);
|
||
else
|
||
$resultmode=MYSQLI_STORE_RESULT;
|
||
|
||
$sql_string="INSERT INTO ".$table_name." SET";
|
||
|
||
$count=0;
|
||
|
||
foreach($data_array as $field=>$value)
|
||
{
|
||
if($count==0)
|
||
$sql_string=$sql_string.' '.$field.'="'.$value.'"';
|
||
else
|
||
$sql_string=$sql_string.','.$field.'="'.$value.'"';
|
||
|
||
++$count;
|
||
}
|
||
|
||
$sql_result=$sql->query($sql_string);
|
||
|
||
if($sql_result)
|
||
return $sql_result;
|
||
|
||
echo 'SQL Insert error,SQLString: '.$sql_string.'<br/>';
|
||
echo 'SQL Error: '.$sql->error;
|
||
return null;
|
||
}
|
||
|
||
/**
|
||
* 向一个表中插入数据，字段数据来自于post
|
||
*/
|
||
function sql_insert_by_post()//$table_name,$field_array [,$resultmode=MYSQLI_STORE_RESULT])
|
||
{
|
||
$sql=get_sql();
|
||
|
||
if($sql==null)return null;
|
||
|
||
$data_array=array();
|
||
|
||
$table_name=func_get_arg(0);
|
||
$field_array=func_get_arg(1);
|
||
|
||
if(func_num_args()==3)
|
||
$resultmode=func_get_arg(2);
|
||
else
|
||
$resultmode=MYSQLI_STORE_RESULT;
|
||
|
||
foreach($field_array as $field)
|
||
{
|
||
if(isset($_POST[$field])&&strlen($_POST[$field])>0)
|
||
$data_array[$field]=$_POST[$field];
|
||
}
|
||
|
||
return sql_insert($table_name,$data_array,$resultmode);
|
||
}
|
||
?>
|