Apache php mysql PHP value MySQL operation class

 Db=new mysqli ($host, $user, $pwd, $name);            Database connection if (Mysqli_connect_errno ()) {echo "Database connection Error". Mysqli_connect_errno ();        Exit ();        } $this->db->query ("Set names UTF8");        $this->table= $table _names;        $this->opt[' field ']= "*"; $this->opt[' where ']= $this->opt[' Order ']= $this->opt[' Limit ']= $this->opt[' Group ']= ';//Var_dump ($       this->opt[' where ');    $this->m ($table _names);        }//Database connection//protected function M ($table _name) {//$this->db=new mysqli (dbhost,dbuser,dbpwd,dbname);////        if (Mysqli_connect_errno ()) {//echo "Database connection Error". Mysqli_connect_errno ();//exit ();//}// $this->db->query ("Set names UTF8");//$this->table= $table _name;//}//field in table Public function t        Bfield () {$desc = $this->db->query ("desc {$this->table}");        $FIELDARR =array (); while (($row = $desc->fetch_assoc ())!=false) {$fieldarr[]= $row [' Field '];        }//Var_dump ($FIELDARR);    return $FIELDARR;         }//Query field Public function field ($filed) {//Split field $FILEDARR =is_string ($filed)? Explode (",", $filed): $filed;            if (Is_array ($FILEDARR)) {$filed = ';            foreach ($filedArr as $v) {$filed. = "'". $v. "'". ",";        }}//var_dump ($filed);    return RTrim ($filed, ",");         }//Determine if the field exists public function Isfield ($fileds) {$filedArr =is_string ($fileds)? Explode (",", $fileds): $fileds;        $tbFiled = $this->tbfield ();        Var_dump ($tbFiled);            foreach ($filedArr as $v) {if (!in_array ($v, $tbFiled)) {echo "field input Error"; }}}//Conditional statement public function where ($where) {$this->opt[' where ']=is_string ($where)? "        WHERE {$where} ":" Is not a string ";    return $this; }//limit Public Function Limit ($limit) {$this->opt[' limit ']=is_string ($limit)? " Limit {$lImit} ":" Is not a string ";    return $this; The Public Function Order ($order) {$this->opt[' order ']=is_string ($order)? "        Order by {$order} ":" Is not a string ";    return $this; } Public Function Group ($group) {$this->opt[' group ']=is_string ($group)? "        Group by {$group} ":" Is not a string ";    return $this; }//Query string public function Select () {$sql = "select * from {$this->table} {$this->opt[' where ']} {$this-&G        t;opt[' Group '} {$this->opt[' Limit '} {$this->opt[' Order '} ";    return $this->fetch ($sql);        }//Result set query public function fetch ($sql) {$result = $this->db->query ($sql);        $sqlarr =array ();        while (($row = $result->fetch_assoc ())!=false) {$sqlarr []= $row;        }//Var_dump ($sqlarr);    return $sqlarr;        }//No result set query public function Querys ($sql) {$sqls = $this->db->query ($sql);    return $this->db->affected_rows; }//DELETE statement public function Delete ($where =array ()) {        if ($where = = "" && empety ($this->opt[' where ')) die ("Cannot be empty");            if ($where! = "") {if (Is_array ($where)) {$where =implode (",", $where);        } $this->opt[' where ']= "where ID in ({$where})";       } $sql = "Delete from {$this->table} {$this->opt[' where '} {$this->opt[' Limit '}";        Var_dump ($sql);    return $this->query ($sql);        }//array key name Public function key ($key) {if (!is_array ($key)) die ("illegal array");        $keys = "";        foreach ($key as $v) {$keys. = $v. ",";    } return RTrim ($keys, ",");        }//Array value Public function value ($value) {if (!is_array ($value)) die ("illegal array");        $strvalue = "";        foreach ($value as $v) {$strvalue. = "'". $v. "'". ",";    } return RTrim ($strvalue, ",");        }//Add statement Public Function Add ($filed) {if (!is_array ($filed)) die ("illegal array");  $fileds = $this->key (Array_keys ($filed)); Returns the key names in the array//var_dUMP ($FILEDS);        $values = $this->value (array_values ($filed));        $sql = "INSERT INTO {$this->table} ({$fileds}) VALUES ($values)";        Var_dump ($sql);    return $this->querys ($sql); }//Find a single record public function find ($field, $id) {$sql = "Select {$this->opt[' field ']} from {$this->table} {$t His->where ($field. ' ='."'".        $id. "')}";        Var_dump ($sql);    return $this->fetch ($sql);        }//UPDATE statement public Function Save ($ARRS) {if (!is_array ($arrs)) die ("illegal array");        if (Empty ($this->opt[' where ')) die ("condition cannot be null");        $str = ""; while (list ($k, $v) =each ($arrs)) {$str = "{$k}=". "        {$v} ', ';        } $str =rtrim ($str, ",");        $sql = "Update {$this->table} set {$str} {$this->opt[' where '}";    return $this->querys ($sql);        }//Gets the total number of records public function counts () {$sql = "select ' id ' from {$this->table}{$this->opt[' where '}";        Var_dump ($sql); return $this->querys ($sQL); }} $db =new mysqls (' 127.0.0.1 ', ' root ', ' ', ' MySQL ', ' user ');

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