I have a class called Person, with its getters and setters, and I want to know how I can return a List from Data Layer. In C# I use List and I can return the list, but in PHP I don't know how.
function AllPersons()
{
try
{
$objConn = new Connection();
$conn = $objConn ->Connect();
$sql = "SELECT * FROM PERSON";
$answer= mysqli_query($cn, $sql);
if(mysqli_num_rows($answer) > 0)
{
while($row = mysqli_fetch_array($answer))
{
/*here i want to do something like in C#
List<Person>listPerson;
listPerson.add(objPerson);*/
}
}
else
{
return null;
}
}
catch (Exception $e)
{
//FB::log("nada");
}
}
Create an array and fill it.
listPerson = [];
while($row = mysqli_fetch_array($answer)) {
listPerson[] = new Person($row);
}
In PHP arrays replace the use of Lists/Arrays you'd use in .NET.
They're really flexible when it comes down to mutations.
In this case you'd probably approach it like:
...
$persons = array();
while($row = mysqli_fetch_array($answer))
{
// Using [] appends the content of $row to the $persons array.
$persons[] = $row;
}
...
Read more about the flexibility of PHPs arrays here.
List is a dimensionless array in C# (Can also be used in dimensional). The arrays in PHP also dimensionless. So you can use arrays.
...
$listPerson = array();
while($row = mysqli_fetch_array($answer))
{
$listPerson[] = objPerson;
}
...
function AllPersons()
{
try
{
$objConn = new Connection();
$conn = $objConn ->Connect();
$sql = "SELECT * FROM PERSON";
$answer= mysqli_query($cn, $sql);
if(mysqli_num_rows($answer) > 0)
{
while($row = mysqli_fetch_array($answer))
{
print_r($row);
}
}
else
{
return null;
}
}
catch (Exception $e)
{
//FB::log("nada");
}
}
I've made a Search API with native PHP in the past, but I don't know how to make it in Codeigniter. The code below is not showing the data. Could someone point me in the right direction?
public function peta(){
$data = array();
// $query = "select * from tb_peta";
$cari = isset($_REQUEST['cari']) ? $_REQUEST['cari'] : '';
if ($cari != null) {
$result = $this->db->query("SELECT * FROM tb_peta WHERE nama LIKE "."'%".$cari."%'");
} else {
$result = $this->db->query( "SELECT * FROM tb_peta");
}
// $q = $this->db->query($query);
if ($q -> num_rows() >0) {
$data ['success'] = 1;
$data ['message'] = 'data ada';
$data ['data']=$q->result();
} else {
$data['result']='0';
$data['message'] ='kosong';
}
while ($row = mysqli_fetch_array($result, MYSQLI_ASSOC)) {
$data[] = $row;
}
echo json_encode(array('planet' => $json_response));
}
Make use of codeigniter query builder.
public function peta(){
$data = array();
$cari = isset($_REQUEST['cari']) ? $_REQUEST['cari'] : '';
if ($cari != null) {
$this->db->like('name',$cari,'both');
$result = $this->db->get("tb_peta");
} else {
$result = $this->db->get("tb_peta");
}
if ($result->num_rows() >0) {
$data ['success'] = 1;
$data ['message'] = 'data ada';
$data ['data']=$result->result_array();
} else {
$data['result']='0';
$data['message'] ='kosong';
}
echo json_encode(array('planet' => $data));
}
So I've been stuck on this for quite a while, surprisingly the update and delete functions work just fine, however I cannot make the CREATE function work properly. Please have a look at it and tell me what I'm doing wrong
<-------------- Entire model for admin panel-------------->>>>>>>> Connection to DB is working fine---------->>>>>>>>>>>
<?php
include_once "Model.php";
class ModelPages extends Model {
public function get($key) {
$sql = "SELECT * from pages where page_key = '$key'";
$row = '';
$page = Null;
foreach ($this->pdo->query($sql) as $row) {
$page = $row;
}
// echo "<pre>";
// var_dump($page);
// exit;
return $page;
}
public function getAll() {
$statement = $this->pdo->prepare("SELECT * from pages Where Id > 3");
$result = $statement->execute();
$pages = array();
if($result) {
$pages = $statement->fetchAll(PDO::FETCH_ASSOC);
}
return $pages;
}
public function updatePage($params=array()) {
if (!is_array($params)) {
return 'Params should be an array';
}
if (isset($params['table'])) {
$tableName = $params['table'];
} else {
$tableName = 'pages';
}
$pageId = isset($params['page_key']) ? $params['page_key'] : null;
$pageTitle = isset($params['page_title']) ? $params['page_title'] : null;
$pageBody = isset($params['page_body']) ? $params['page_body'] : null;
if ($pageId == null) {
return 'No page id provided';
}
$sql = "UPDATE " . $tableName . " SET
title = :title,
body = :body
WHERE page_key = :page_key";
$statement = $this->pdo->prepare($sql);
$statement->bindParam(':title', $pageTitle, PDO::PARAM_STR);
$statement->bindParam(':body', $pageBody, PDO::PARAM_STR);
$statement->bindParam(':page_key', $pageId, PDO::PARAM_INT);
$result = $statement->execute();
return $result;
}
public function deletePage($pageId) {
// build sql
$sql = "DELETE FROM pages WHERE id = " . intval($pageId);
$statement = $this->pdo->prepare($sql);
$result = $statement->execute();
return $result;
}
public function createPage($params=array()){
if (!is_array($params)) {
return 'Params should be an array';
}
if (isset($params['table'])) {
$tableName = $params['table'];
} else {
$tableName = 'pages';
}
$page_key = isset($params['page_key']) ? $params['page_key'] : 'page_key';
$pageTitle = isset($params['page_title']) ? $params['page_title'] : 'page_title';
$pageBody = isset($params['page_body']) ? $params['page_body'] : 'page_body';
$sql = "INSERT INTO " . $tablename ." SET page_key=:page_key, title=:title, body=:body ";
// prepare query for execution
$statement = $this->pdo->prepare($sql);
// bind the parameters
$statement->bindParam(':page_key', $_POST['page_key']);
$statement->bindParam(':title', $_POST['title']);
$statement->bindParam(':body', $_POST['body']);
// specify when this record was inserted to the database
// Execute the query
$result = $statement->execute();
return $result;
}
}
<?php
include 'controllers/controller.php';
include 'models/Model.php';
include 'models/ModelPages.php';
<------------------------ADMIN CONTROller----------------------->>>>>>>>>>>>
class Admin extends Controller {
function __construct() {
// create an instance of ModelPages
$ModelPages = new ModelPages();
if(isset($_POST['page_key'])) {
// TODO: update DB
$tableData['page_body'] = $_POST['body'];
$tableData['table'] = 'pages';
$tableData['page_title'] = $_POST['title'];
$tableData['page_key'] = $_POST['page_key'];
$response = $ModelPages->updatePage($tableData);
if ($response == TRUE) {
header("http://188.166.96.184/workspace/marem/AAAAA/index.php?page=admin&success=true");
}
}
if(isset($_GET['page_key'])) {
// by default we assume that the key_page exists in db
$error = false;
$page = $ModelPages->get($_REQUEST['page_key']);
// if page key does not exist set error to true
if($page === null) {
$error = true;
}
// prepare data for the template
$data = $page;
$data["error"] = $error;
// display
echo $this->render2(array(), 'header.php');
echo $this->render2(array(), 'navbar_admin.php');
echo $this->render2($data, 'admin_update_page.php');
echo $this->render2(array(), 'footer.php');
} else {
// case: delete_page
if(isset($_GET['delete_page'])) {
$response = $ModelPages->deletePage($_GET['delete_page']);
if($response == TRUE) {
header("http://188.166.96.184/workspace/marem/AAAAA/index.php?page=admin&deleted=true");
}
}
}
//Get table name and make connection
if(isset($_POST['submit'])) {
$page_key = $_POST['page_key'];
$page_title = $_POST['title'];
$page_body = $_POST['body'];
$response = $ModelPages->createPage();
if($response=TRUE){
header("http://188.166.96.184/workspace/marem/AAAAA/index.php?page=admin&created=true");
}
}
}
// load all pages from DB
$pages = $ModelPages -> getAll();
// display
echo $this->render2(array(), 'header_admin.php');
echo $this->render2(array(), 'navbar_admin.php');
echo $this->render2(array("pages"=> $pages), 'admin_view.php');
echo $this->render2(array(), 'footer.php');
}
}
?>
Since you have if(isset($_POST['page_key']) on the top:
class Admin extends Controller {
function __construct() {
// create an instance of ModelPages
$ModelPages = new ModelPages();
if(isset($_POST['page_key'])) {
...
if ($response == TRUE) {
header("http://188.166.96.184/workspace/marem/AAAAA/index.php?
}
and it is used to call $response = $ModelPages->updatePage($tableData);
your code never reach the part with good values at the bottom:
if(!isset($_POST['page_key'])) {
...
$response = $ModelPages->createPage($tableData);
So my simple but not the best suggestion is use extra parameter when POST like action. so you can check:
if(isset($_POST['action']) && $_POST['action']=='update') {
...
} elseif (isset($_POST['action']) && $_POST['action']=='create') {
...
} etc...
hope this will help you for now :-)
$sql = "INSERT INTO " . $tablename ." SET page_key=:page_key, title=:title, body=:body ";
$tablename is not in scope when the statement above is executed. And you've got no error handling in the code.
I'm having some issue with two functions at the moment; I'm trying to get an array to pass from the first function to the other--but for some reason I cannot get it to work.
function getResourceXML($id)
{
$xml = simplexml_load_file('resources.xml');
foreach($xml->children()->children() as $children)
{
if($children['id'] == $id)
{
$resource[] = $children["income"];
return $resource;
}
}
}
function getResourceMultiplier()
{
$sql = "SELECT resourceArray FROM starinformation WHERE starOwner = :uid";
$que = $this->db->prepare($sql);
$que->bindParam('uid', $this->uid);
try
{
$que->execute();
while($row = $que->fetch(PDO::FETCH_BOTH))
{
$resource = $this->getResourceXML($row[0]);
return $resource;
}
}
catch(PDOException $e) {}
}
Move the return statement to after the loop } in both functions or else you only get one loop iteration. Also, in getResourceMultiplier() you're not creating an array. You need (or similar):
$resource[] = $this->getResourceXML($row[0]);
I'm writing a class and handful of functions to connect to the database and retrieve the information from the tables. I went through previous posts having similar titles, but most of them have written using mysql functions and I am using mysqli functions.
I want somebody who can go through this simple script and let me know where I am making my mistake.
This is my class.connect.php:
<?php
class mySQL{
var $host;
var $username;
var $password;
var $database;
public $dbc;
public function connect($set_host, $set_username, $set_password, $set_database)
{
$this->host = $set_host;
$this->username = $set_username;
$this->password = $set_password;
$this->database = $set_database;
$this->dbc = mysqli_connect($this->host, $this->username, $this->password, $this->database) or die('Error connecting to DB');
}
public function query($sql)
{
return mysqli_query($this->dbc, $sql) or die('Error querying the Database');
}
public function fetch($sql)
{
$array = mysqli_fetch_array($this->query($sql));
return $array;
}
public function close()
{
return mysqli_close($this->dbc);
}
}
?>
This is my index.php:
<?php
require_once ("class.connect.php");
$connection = new mySQL();
$connection->connect('localhost', 'myDB', 'joker', 'names_list');
$myquery = "SELECT * FROM list";
$query = $connection->query($myquery);
while($array = $connection->fetch($query))
{
echo $array['first_name'] . '<br />';
echo $array['last_name'] . '<br />';
}
$connection->close();
?>
I am getting the error saying that Error querying the Database.
Few problems :-
you don't die without provide a proper mysql error (and is good practice to exit gracefully)
fetch method is only FETCH the first row
mysqli have OO method, why you still using procedural function?
The problem is either this:
public function fetch($sql)
{
$array = mysqli_fetch_array($this->query($sql));
return $array;
}
or this:
while($array = $connection->fetch($query))
Because you are using the result from the query to query again. Basically, you are doing:
$r = mysqli_query($this->dbc, $sql);
$array = mysqli_fetch_array(mysqli_query($this->dbc, $r));
And you are getting an error, because $r is not a query string. When it's converted to a string, it's a "1" (from your other comment).
Try changing the function to (changed name of variable so you can see the difference):
public function fetch($result)
{
return mysqli_fetch_array($result);
}
or just call the function directly.
If you don't do your own db abstraction for learning php and mysql, you can use Medoo (http://medoo.in/).
It's a free and tiny db framework, that could save a huge work and time.
Obviously an error occurs on SELECT * FROM list you can use mysqli_error to find the error:
return mysqli_query($this->dbc, $sql) or die('Error:'.mysqli_error($this->dbc));
This will display the exact error message and will help you solve your problem.
Try to check this
https://pramodjn2.wordpress.com/
$database = new db();
$query = $database->select(‘user’);
$st = $database->result($query);
print_r($st);
class db {
public $server = ‘localhost';
public $user = ‘root';
public $passwd = ‘*****';
public $db_name = ‘DATABASE NAME';
public $dbCon;
public function __construct(){
$this->dbCon = mysqli_connect($this->server, $this->user, $this->passwd, $this->db_name);
}
public function __destruct(){
mysqli_close($this->dbCon);
}
/* insert function table name, array value
$values = array(‘first_name’ => ‘pramod’,’last_name’=> ‘jain’);
*/
public function insert($table,$values)
{
$sql = “INSERT INTO $table SET “;
$c=0;
if(!empty($values)){
foreach($values as $key=>$val){
if($c==0){
$sql .= “$key='”.htmlentities($val, ENT_QUOTES).”‘”;
}else{
$sql .= “, $key='”.htmlentities($val, ENT_QUOTES).”‘”;
}
$c++;
}
}else{
return false;
}
$this->dbCon->query($sql) or die(mysqli_error());
return mysqli_insert_id($this->dbCon);
}
/* update function table name, array value
$values = array(‘first_name’ => ‘pramod’,’last_name’=> ‘jain’);
$condition = array(‘id’ =>5,’first_name’ => ‘pramod!’);
*/
public function update($table,$values,$condition)
{
$sql=”update $table SET “;
$c=0;
if(!empty($values)){
foreach($values as $key=>$val){
if($c==0){
$sql .= “$key='”.htmlentities($val, ENT_QUOTES).”‘”;
}else{
$sql .= “, $key='”.htmlentities($val, ENT_QUOTES).”‘”;
}
$c++;
}
}
$k=0;
if(!empty($condition)){
foreach($condition as $key=>$val){
if($k==0){
$sql .= ” WHERE $key='”.htmlentities($val, ENT_QUOTES).”‘”;
}else{
$sql .= ” AND $key='”.htmlentities($val, ENT_QUOTES).”‘”;
}
$k++;
}
}else{
return false;
}
$result = $this->dbCon->query($sql) or die(mysqli_error());
return $result;
}
/* delete function table name, array value
$where = array(‘id’ =>5,’first_name’ => ‘pramod’);
*/
public function delete($table,$where)
{
$sql = “DELETE FROM $table “;
$k=0;
if(!empty($where)){
foreach($where as $key=>$val){
if($k==0){
$sql .= ” where $key='”.htmlentities($val, ENT_QUOTES).”‘”;
}else{
$sql .= ” AND $key='”.htmlentities($val, ENT_QUOTES).”‘”;
}
$k++;
}
}else{
return false;
}
$del = $result = $this->dbCon->query($sql) or die(mysqli_error());
if($del){
return true;
}else{
return false;
}
}
/* select function
$rows = array(‘id’,’first_name’,’last_name’);
$where = array(‘id’ =>5,’first_name’ => ‘pramod!’);
$order = array(‘id’ => ‘DESC’);
$limit = array(20,10);
*/
public function select($table, $rows = ‘*’, $where = null, $order = null, $limit = null)
{
if($rows != ‘*’){
$rows = implode(“,”,$rows);
}
$sql = ‘SELECT ‘.$rows.’ FROM ‘.$table;
if($where != null){
$k=0;
foreach($where as $key=>$val){
if($k==0){
$sql .= ” where $key='”.htmlentities($val, ENT_QUOTES).”‘”;
}else{
$sql .= ” AND $key='”.htmlentities($val, ENT_QUOTES).”‘”;
}
$k++;
}
}
if($order != null){
foreach($order as $key=>$val){
$sql .= ” ORDER BY $key “.htmlentities($val, ENT_QUOTES).””;
}
}
if($limit != null){
$limit = implode(“,”,$limit);
$sql .= ” LIMIT $limit”;
}
$result = $this->dbCon->query($sql);
return $result;
}
public function query($sql){
$result = $this->dbCon->query($sql);
return $result;
}
public function result($result){
$row = $result->fetch_array();
$result->close();
return $row;
}
public function row($result){
$row = $result->fetch_row();
$result->close();
return $row;
}
public function numrow($result){
$row = $result->num_rows;
$result->close();
return $row;
}
}
The mysqli_fetch_array function in your fetch method requires two parameters which are the SQL result and the kind of array you intend to return. In my case i use MYSQLI_ASSOC.
That is it should appear like this:
public function fetch($sql)
{
$array = mysqli_fetch_array($this->query($sql), MYSQLI_ASSOC);
return $array;
}
**classmysql.inc.php**
<?php
class dbclass {
var $CONN;
function dbclass() { //constructor
$conn = mysql_connect(SERVER_NAME,USER_NAME,PASSWORD);
//$conn = mysql_connect(localhost,root,"","");
if(!$conn)
{ $this->error("Connection attempt failed"); }
if(!mysql_select_db(DB_NAME,$conn))
{ $this->error("Database Selection failed"); }
$this->CONN = $conn;
return true;
}
//_____________close connection____________//
function close(){
$conn = $this->CONN ;
$close = mysql_close($conn);
if(!$close){
$this->error("Close Connection Failed"); }
return true;
}
function error($text) {
$no = mysql_errno();
$msg = mysql_error();
echo "<hr><font face=verdana size=2>";
echo "<b>Custom Message :</b> $text<br><br>";
echo "<b>Error Number :</b> $no<br><br>";
echo "<b>Error Message :</b> $msg<br><br>";
echo "<hr></font>";
exit;
}
//_____________select records___________________//
function select ($sql=""){
if(empty($sql)) { return false; }
if(!eregi("^select",$sql)){
echo "Wrong Query<hr>$sql<p>";
return false; }
if(empty($this->CONN)) { return false; }
$conn = $this->CONN;
$results = #mysql_query($sql,$conn);
if((!$results) or empty($results)) { return false; }
$count = 0;
$data = array();
while ( $row = mysql_fetch_array($results)) {
$data[$count] = $row;
$count++; }
mysql_free_result($results);
return $data;
}
//________insert record__________________//
function insert ($sql=""){
if(empty($sql)) { return false; }
if(!eregi("^insert",$sql)){ return false; }
if(empty($this->CONN)){ return false; }
$conn = $this->CONN;
$results = #mysql_query($sql,$conn);
if(!$results){
$this->error("Insert Operation Failed..<hr>$sql<hr>");
return false; }
$id = mysql_insert_id();
return $id;
}
//___________edit and modify record___________________//
function edit($sql="") {
if(empty($sql)) { return false; }
if(!eregi("^update",$sql)){ return false; }
if(empty($this->CONN)){ return false; }
$conn = $this->CONN;
$results = #mysql_query($sql,$conn);
$rows = 0;
$rows = #mysql_affected_rows();
return $rows;
}
//____________generalize for all queries___________//
function sql_query($sql="") {
if(empty($sql)) { return false; }
if(empty($this->CONN)) { return false; }
$conn = $this->CONN;
$results = mysql_query($sql,$conn) or $this->error("Something wrong in query<hr>$sql<hr>");
if(!$results){
$this->error("Query went bad ! <hr>$sql<hr>");
return false; }
if(!eregi("^select",$sql)){return true; }
else {
$count = 0;
$data = array();
while ( $row = mysql_fetch_array($results))
{ $data[$count] = $row;
$count++; }
mysql_free_result($results);
return $data;
}
}
function extraqueries($sql="") {
if(empty($sql)) { return false; }
if(empty($this->CONN)) { return false; }
$conn = $this->CONN;
$results = mysql_query($sql,$conn) or $this->error("Something wrong in query<hr>$sql<hr>");
if(!$results){
$this->error("Query went bad ! <hr>$sql<hr>");
return false; }
else {
$count = 0;
$data = array();
while ( $row = mysql_fetch_array($results))
{ $data[$count] = $row;
$count++; }
mysql_free_result($results);
return $data;
}
}
}
?>
**config.inc.php**
<?php
ini_set("memory_limit","70000M");
ini_set('max_execution_time', 900);
ob_start();
session_start();
error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
############################################
# Database Server
############################################
if($_SERVER['HTTP_HOST']=="localhost")
{
define("DB_NAME","DB_NAME");
define("SERVER_NAME","SERVER_NAME");
define("USER_NAME","USER_NAME");
define("PASSWORD","PASSWORD");
}
else
{
define("DB_NAME","DB_NAME");
define("SERVER_NAME","SERVER_NAME");
define("USER_NAME","USER_NAME");
define("PASSWORD","PASSWORD");
}
#############################################
# File paths
#############################################
// For the Database file path
include("system/classmysql.inc.php");
//For the inc folders
define("INC","inc/");
//For the Function File of the pages folders
define("FUNC","func/");
//For the path of the system folder
define("SYSTEM","system/");
$table_prefix = 'dep_';
################################################################
# Database Class
################################################################
$obj_db = new dbclass();
?>
**Function Page**
<?php
// IF admin is not logged in
if(!isset($_SESSION['session_id']))
{
header("location:index.php");
}
$backpage = 'page.php?type=staff&';
if(isset($_REQUEST['endbtn']) && trim($_REQUEST['endbtn']) == "Back")
{
header("location:".$backpage);
die();
}
// INSERT into database.
if(isset($_REQUEST['submit']) && trim($_REQUEST['submit']) == "Submit")
{
$pass = addslashes(trim($_REQUEST['password']));
$password = encrypt($pass, "deppro");
$username = addslashes(trim($_REQUEST['username']));
$sql = "select * from ".$table_prefix."users where `UserName` ='".$username."'";
$result = $obj_db->select($sql);
if(count($result) == 0)
{
$insert="INSERT INTO ".$table_prefix."users (`UserName`)VALUES ('".$username."')";
$sql=$obj_db->insert($insert);
$newuserid = mysql_insert_id($obj_db->CONN);
}
header("location:".$backpage."msg=send&alert=2");
die();
}
// DELETE record from database
if(isset($_REQUEST['action']) && trim($_REQUEST['action'])==3)
{
if(isset($_REQUEST['id']) && trim($_REQUEST['id']!=""))
{
$id = site_Decryption($_REQUEST['id']);
$sql_del = "Delete from ".$table_prefix."users where StaffID ='$id'";
$del = $obj_db->sql_query($sql_del);
header("location:".$backpage."msg=delete&alert=2");
die();
}
}
// UPDATE the record
$action=1;
if((isset($_REQUEST['action']) && trim($_REQUEST['action'])==2) && (!(isset($_REQUEST['submit']) && trim($_REQUEST['submit']) == "Submit")))
{
if(isset($_REQUEST['id']) && trim($_REQUEST['id']!=""))
{
$id = site_Decryption($_REQUEST['id']);
//$id = $_SESSION['depadmin_id'];
$sql = "select * from ".$table_prefix."users where StaffID ='$id'";
$result = $obj_db->select($sql);
if($result)
{
foreach($result as $row)
{
$title = stripslashes($row['StaffTitle']);
$action=2;
}
}
if(isset($_REQUEST['submit']) && trim($_REQUEST['submit']) == "Update")
{
$title = addslashes(trim($_REQUEST['title']));
$sql_upd ="UPDATE ".$table_prefix."users SET `StaffTitle` = '$title' WHERE StaffID ='$id'";
$result = $obj_db->sql_query($sql_upd);
$action=1;
header("location:".$backpage."msg=edited&alert=2");
die();
}
}
}
if(isset($_REQUEST['vid']) && trim($_REQUEST['vid']!=""))
{
$id = site_Decryption($_REQUEST['vid']);
$sql = "select * from ".$table_prefix."users where StaffID ='$id'";
$result = $obj_db->select($sql);
if($result)
{
foreach($result as $row)
{
$username = stripslashes($row['UserName']);
}
}
}
?>
<td class="center"><span class="editbutton"> </span> <span class="deletebutton"> </span> <a class="lightbox" title="View" href="cpropertyview.php?script=view&vid=<?php echo site_Encryption($sql[$j]['PropertyID']); ?>&lightbox[width]=55p&lightbox[height]=60p"><span class="viewbutton"> </span></a></td>