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logic.php
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<?php
class logic{
protected $pdbLink;
protected $pdbName;
protected $pdbPassWord;
protected $pdbUserName;
protected $rSql;
function __construct() {
$this->pdbLink = "121.43.37.189";
$this->pdbName = "qyty";
$this->pdbPassWord = "root";
$this->pdbUserName = "root";
$this->rSql = true;
}
public function activity($type,$sql,$sNum){
$list = array();
$conn = new mysqli($this->pdbLink,$this->pdbUserName,$this->pdbPassWord,$this->pdbName);
//检测数据库连接 0 正常连接 1 连接失败 2 sql语句错误 3 查询结果为空 4
$list["code"] = 0;
if ($conn->connect_errno) {
$list["code"] = 1;
$list["msg"] = "数据库连接错误";
return $list;
}
$conn->set_charset("UTF8mb4");
/**
* s select 查询
* a add 添加
* u update 更新
* d delete 删除
* c count 统计查询条数
* */
$result = $conn->query($sql);
if($this->rSql){
$list["sql"] = $sql;
}
switch ($type){
case "c":
if ($result)
{
$num_arr = $result->fetch_array(MYSQL_ASSOC);
return intval($num_arr["count(*)"]);
}else{
return -1;
}
break;
case "s":
if ($result)
{
if ($result->num_rows>0)
{
$li = array();
while ($rows = $result->fetch_array(MYSQL_ASSOC)) {
array_push($li,$rows);
}
$list["code"] = 0;
$list["list"] = $li;
$list["allCount"] = $sNum;
$list["count"] = $result->num_rows;
$list["msg"] = "success";
$li = null;
return $list;
}else{
$list["code"] = 3;
$list["allCount"] = $sNum;
$list["count"] = 0;
$list["msg"] = "Data is empty";
return $list;
}
}else{
$list["code"] = 2;
$list["msg"] ="sql statement error";
return $list;
}
break;
case "a":
if ($result) {
$list["code"] = 0;
$list["msg"] ="insert success";
return $list;
} else {
$list["code"] = 2;
$list["msg"] ="insert failure";
return $list;
}
break;
case "u":
if ($result) {
$list["code"] = 0;
$list["msg"] ="update success";
return $list;
} else {
$list["code"] = 2;
$list["msg"] ="update failure";
return $list;
}
break;
case "d":
if ($result) {
$list["code"] = 0;
$list["msg"] ="delete success";
return $list;
} else {
$list["code"] = 2;
$list["msg"] ="delete failure";
return $list;
}
break;
}
}
/**
* @insert 插入语句拼接
* @$formName 表名
* @$obj 条件数组
* */
public function insert($formName,$obj){
$keys = "";
$values = "";
foreach ($obj as $key => $value){
if(gettype($value) == "string"){
$value= "'".$value."'";
}
$keys .= ",".$key;
$values .= ",".$value;
}
$keys = substr($keys,1,strlen($keys));
$values = substr($values,1,strlen($values));
$sql = "insert into ".$formName." (".$keys.") values (".$values.")";
return $this->activity("a",$sql,0);
}
/**
* @cselect 统计查询条数
* @$formName 表名
* @$result 需要的字段
* @$obj 条件数组
*
* */
public function cselect($formName,$result,$obj){
//拼接返回字段
$results = "";
$condition = "";
if(gettype($result) == "array"){
for ($i=0; $i<count($result); $i++)
{
$results .= ",".$result[$i];
}
$results= substr($results,1,(strlen($results))-1);
}else if($result == ""){
$results = "*";
}
if(gettype($obj) == "array"){
foreach ($obj as $key => $value){
if(gettype($value) == "string"){
$value= "'".$value."'";
}
$condition .= $key." = ".$value ." and ";
}
$condition = substr($condition,0,(strlen($condition)-strlen(" and ")));
$condition = "where ".$condition;
}else if($obj == ""){
$condition= "";
}
$sql = "select ".$results." from ".$formName." ".$condition;
// return $sql;
return $this->activity("c",$sql,0);
}
/**
* @select 查询
* @$result 需要的字段
* @$obj 条件数组
* @$sort 排序和分页逻辑
* 排序 $sort["orderby"] 正序 跟字段名 $sort["orderbydesc"] 倒叙 跟字段名
* 分页$sort["page"] 行数限制 $sort["row"]
* 自定义排序条件 $sort["sql"]
* 模糊搜索 单一条件下的模糊搜索 $obj["like_word"] 字段值 $obj["like_word_value"] 匹配zhi
* */
public function select($formName,$result,$obj,$sort,$count = false){
//拼接返回字段
$results = "";
$condition = "";
$limit = "";
$sorts = "";
$likes = "";
if(gettype($sort) == "array"){
if(isset($sort["orderby"]) != null){
$sorts = "order by ".$sort["orderby"]." ";
}
if(isset($sort["orderbydesc"]) != null){
$sorts = "order by ".$sort["orderbydesc"]." desc ";
}
if(isset($sort["sql"]) != null){
$sorts = $sort["sql"];
}
if(isset($sort["page"]) != null){
$startRow = ($sort["page"]- 1) * $sort["row"];
$limit = "limit ".$startRow." , ".$sort["row"];
}
}
if(gettype($result) == "array"){
for ($i=0; $i<count($result); $i++)
{
$results .= ",".$result[$i];
}
$results= substr($results,1,(strlen($results))-1);
}else if($result == ""){
$results = "*";
}
if(gettype($obj) == "array"&&count($obj)>0){
if(isset($obj["like_word"])){
$likes = $obj["like_word"]." like ".$obj["like_word_value"]." and ";
}
$word = 0;
foreach ($obj as $key => $value){
if($key == "like_word"){
continue;
}
if($key == "like_word_value"){
continue;
}
$word++;
if(strpos($key,'>') !== false||strpos($key,'<') !== false||strpos($key,'!=') !== false){
$condition .= $key.$value ." and ";
}else if(gettype($value) == "string"){
$value= "'".$value."'";
$condition .= $key." = ".$value ." and ";
}else if(gettype($value) == "integer"){
$condition .= $key." = ".$value ." and ";
}else if(gettype($value) == "array"){
for ($x=0; $x<count($value); $x++) {
if($x != count($value)-1){
if(gettype($value[$x])=="string"){
$condition .= $key." = '".$value[$x] ."' || ";
}
if(gettype($value[$x])=="integer"){
$condition .= $key." = ".$value[$x] ." || ";
}
}else{
if(gettype($value[$x])=="string"){
$condition .= $key." = '".$value[$x] ."' and ";
}
if(gettype($value[$x])=="integer"){
$condition .= $key." = ".$value[$x] ." and ";
}
}
}
}
}
$condition = substr($condition,0,(strlen($condition)-strlen(" and ")));
if($likes != ""){
if($word== 0){
$likes= substr($likes,0,(strlen($likes)-strlen(" and ")));
}
$condition = "where ".$likes." ".$condition;
}else{
$condition = "where ".$condition;
}
}else if($obj == ""||count($obj)==0){
$condition= "";
}
if($count){
$sql = "select count(*) from ".$formName." ".$condition." ".$sorts;
$sNum = $this->activity("c",$sql,0);
return $sNum;
}
$sql = "select count(*) from ".$formName." ".$condition." ".$sorts;
$sNum = $this->activity("c",$sql,0);
$sql = "select ".$results." from ".$formName." ".$condition." ".$sorts." ".$limit;
return $this->activity("s",$sql,$sNum);
}
/**
* @selectJoin 多标联合查询
* @$formName 表名数组
* @$result 需求字段数组
* @$obj 条件数组
* 事例：
* $formName[] = "sc_download";
* $formName[] = "sc_resources";
* $result[] = "sc_resources.title";
* $obj["sc_download.res_id"] = "sc_resources.id";
* $obj["sc_download.user_id"] = "743085";
* $sort["page"] = 1;
* $sort["row"] = 4;
* $sort["orderbydesc"]= "sc_download.time,sc_download.id";
* 拼接sql
* select sc_resources.title from sc_download,sc_resources where sc_download.res_id = sc_resources.id and sc_download.user_id = 743085 order by sc_download.time,sc_download.id desc limit 0 , 4
* */
public function selectJoin($formName,$result,$obj,$sort){
$sorts ="";
$objs ="";
$results = "";
$formNames = "";
foreach ($result as $key => $value){
$results.= $value.",";
}
foreach ($formName as $key => $value){
$formNames.= $value.",";
}
foreach ($obj as $key => $value){
$objs .= $key." = ".$value." and ";
}
if(gettype($sort) == "array"){
if(isset($sort["orderby"]) != null){
$sorts = "order by ".$sort["orderby"]." ";
}
if(isset($sort["orderbydesc"]) != null){
$sorts = "order by ".$sort["orderbydesc"]." desc ";
}
if(isset($sort["sql"]) != null){
$sorts = $sort["sql"];
}
if(isset($sort["page"]) != null){
$startRow = ($sort["page"]- 1) * $sort["row"];
$limit = "limit ".$startRow." , ".$sort["row"];
}
}
$formNames= substr($formNames,0,(strlen($formNames))-1);
$results = substr($results,0,(strlen($results))-1);
$objs= substr($objs,0,strlen($objs)-(strlen(" and ")));
$sql = "select ".$results." from ".$formNames." where ".$objs." ".$sorts;
$sNum = $this->activity("c",$sql,0);
$sql = "select ".$results." from ".$formNames." where ".$objs." ".$sorts." ".$limit;
return $this->activity("s",$sql,$sNum);
}
/**
* @update 修改数据
* @$formName 表名
* @$changes 修改数据数组 #支持计数器操作，直接传入字符串 如：coll_num = coll_num+1
* @$condition 条件数组
* */
public function update($formName,$change,$condition){
// $sql = "update sc_test set name = '小虎dui' where id = 2";
$changes = "";
$conditions = "";
if(gettype($change) == "array"){
foreach ($change as $key => $value){
if(gettype($value) == "string"){
$value= "'".$value."'";
}
$changes .= $key." = ".$value .",";
}
$changes= substr($changes,0,(strlen($changes) - 1));
}
if(gettype($change) == "string"){
$changes = $change;
}
foreach ($condition as $key => $value){
if(gettype($value) == "string"){
$value= "'".$value."'";
}
$conditions.= $key." = ".$value ." and ";
}
$conditions = substr($conditions,0,(strlen($conditions) - strlen(" and ")));
$conditions = " where ".$conditions;
$sql ="update ".$formName." set ".$changes." ".$conditions;
return $this->activity("u",$sql,0);
}
/**
* @delete 删除语句
* @$formName 表名
* @$condition 删除条件数组
* */
public function delete($formName,$condition){
// $sql = "delete from sc_test where id = 2";
$conditions = "";
foreach ($condition as $key => $value){
if(gettype($value) == "string"){
$value= "'".$value."'";
}
$conditions .= $key." = ".$value ." and ";
}
$conditions = substr($conditions,0,(strlen($conditions) - strlen(" and ")));
$sql = "delete from ".$formName." where ".$conditions;
return $this->activity("d",$sql,0);
}
/**
* @insert 批量插入语句拼接
* @$formName 表名
* @$keys 字段名 a,b,c 字符串
* @$obj 对应的批量数据数组
* */
public function inserts($formName,$keys,$obj){
$values = "";
foreach ($obj as $key => $value){
$obj1 = $value;
$valueb = "";
for($f = 0;$f<count($obj1);$f++){
$valuea = $obj1[$f];
if(gettype($obj1[$f]) == "string"){
$valuea = "'".$obj1[$f]."'";
}
$valueb .= $valuea.",";
}
$valueb = substr($valueb,0,strlen($valueb)-1);
$values .= "(".$valueb."),";
}
$values = substr($values,0,strlen($values)-1);
$sql = "insert into ".$formName." (".$keys.") values ".$values;
return $this->activity("a",$sql,0);
}
}
?>