"Fatal error: Call to undefined function " Error - php

Question

The following error :
Fatal error: Call to undefined function add() in E:\xampp\htdocs\paperblog\Admin\AddNewPost.php on line 18
line 18 :
$msg=add($title,$subtitle,$details,$_FILES['_postImage']);
The whole codes (HTML
,PHP)are in the following lines.
I've 4 files:
The AddNewPost.php file is the main file has the HTML code.
Has PHP code :
<?php
include_once("..\DB.php");
include_once("..\Classes\post.php");
$title="";
$subtitle="";
$details="";
$msg="";
if(isset($_POST['_PostSubmit']))
{
$title=$_POST['_PostTitle'];
$subtitle=$_POST['_PostSubTtile'];
$details=$_POST['_PostDetails'];
if( !empty($title)||!empty($subtitle)||!empty($details) )
{
$msg=add($title,$subtitle,$details,$_FILES['_postImage']);
}
else
$msg=" The post is empty ";
}
include_once("Header.php");
?>
And HTML:
<form action="AddNewPost.php" method="post" id="cmntfrm" enctype= "multipart/form-data">
<P align="center" style="color:#F00"><?=$msg?></P>
<p> </p>
<table width="600" border="0" align="center">
<img src="../images/addNewPost.png"/>
<br />
<br />
<tr>
<td width="131">Post Title <h8 style="color:#F00">*</h8>:</td>
<td width="443"><input name="_PostTitle" type="text" /></td>
</tr>
<tr>
<td>Post Sub Title <h8 style="color:#F00">*</h8>:</td>
<td><input name="_PostSubTtile" type="text" /></td>
</tr>
<tr>
<td>Post Details :</td>
<td><textarea name="_PostDetails" cols="32" rows="7"> </textarea></td>
</tr>
<tr>
<td>Post Image :</td>
<td><input name="_postImage" type="file"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td></td>
<td><input name="_PostSubmit" type="submit" value="Save" id="submit" /></td>
</tr>
</table>
<center>
<img src="../Post_Imges/a.jpg" height="420" width="460" />
</center>
Thepost.php file which has functions of the post form where is in the classes folder. It Has PHP code:
<?php
include_once("../DB.php");
class post{
var $Post_ID;
var $title,$subtitle,$postdetail,$Post_Imgs;
var $pmonth ,$pyear ,$pday;
function add($title,$subtitle,$postdetail,$file){
$query=" insert into post(Title,SubTitle,PostDetails,PDay,PMonth,PYear)
values('$title,'$subtitle','$postdetail'".date("d").",".date("m").",".date("Y").")";
$this->Post_ID=$this->GetLastPostId();
$msg=test("Add",$query);
$msg.="<br/>".$this->uploadImage($file);
return $msg;
}
function GetLastPostId(){
$query="select Max(Post_ID) from Post";
$result=mysql_query($query);
$row=mysql_fetch_row($result);
return $row[0];
}
function uploadImage($file){
uploadFile("Post_Imges\$Post_ID.jpg",$file);
}
}
?>
3.The DB.php file which has some function for DB. It has :
<?php
include_once("functions.php");
mysql_connect("localhost","root","");
mysql_select_db("paperbloge");
function test($test ,$query){
mysql_query($query);
if(!empty(mysql_errno()))
return "Post ".$test." Successfully" ;
else
return "Error".mysql_errno().":".mysql_error();
}
?>
Finaly, functions.phpfile which has uploadfile function.
function uploadFile($folderPathFileName,$file){
if (!empty($file['tmp_name'])){
move_uploaded_file($file['tmp_name'],$_SERVER['DOCUMENT_ROOT']."\paperblog\ ".$folderFileName);
$msg.="<br/> Image uploaded Successfully";
}
else
$msg= "Image File too large or No Image File";
return $msg;
}
?>
Thats the whole codes that i've .
Does anyone know what is wrong here that cause this problem?
Thanks
Ya it's working , But have some errors again .
Thanks for your helping .

Answer 1

add() is not a function. It is a method of a class called "post". That means you have to instantiate that class and then call that method:
$post = new Post();
$msg=$post->add($title,$subtitle,$details,$_FILES['_postImage']);

Answer 2

add is part of the class post
Change your line to;
$objPost = new post();
$msg = $objPost->add($title,$subtitle,$details,$_FILES['_postImage']);