从一个表中获取ID并使用php将其存储到另一个表中

Question

I have a 2 page form. First page takes input from user regarding property ans stores it in retailer_add_property table. after this page the user is redirected to next page admin_add_property_images.php where user can store multiple images (table name is propertyimages )of the property that was entered in the previous page. what I am trying to do is to fetch the last inserted id of retailer_add_property table which will be created in the first form and store it in the propertyimages table

Form one: admin_add_property.php

<form class="form-horizontal" role="form" action="admin_insert_property.php" enctype="multipart/form-data" method="post">
    <div class="form-group">
        <label class="col-lg-3 control-label">Property name:</label>
            <div class="col-lg-8">
                <input class="form-control" name="propertyname" value="" type="text" required>
            </div>
    </div>

    <div class="form-group">
        <label class="col-md-3 control-label">Property Type:</label>
            <div class="col-md-8">
                <select name="cancellation"  id="cancellation"  required>                       
                    <option value="yes">Yes</option>            
                    <option value="no">No</option>                  
                </select>               
            </div>
    </div>


    <div class="form-group">
        <label class="col-md-3 control-label"></label>
            <div class="submit">
                <input class="btn btn-primary" value="Save " type="submit" name="submit">

                <span></span>
            </div>  
    </div>

</form>

"admin_insert_property.php"

<?php
include('admin_session.php');

$con=mysqli_connect("localhost","qwe","pwd","qwe");

if (mysqli_connect_errno()) 
    {
        echo "Failed to connect to MySQL: " . mysqli_connect_error();
    }

$propertyname = mysqli_real_escape_string($con, $_POST['propertyname']);
$propertytype = mysqli_real_escape_string($con, $_POST['propertytype']);


$sql="INSERT INTO retailer_add_property (propertyname,propertytype) VALUES ('$propertyname','$propertytype')";

if (!mysqli_query($con,$sql)) 
    {
        die('Error: ' . mysqli_error($con));
    }

mysqli_query($con, $sql);   

header("Location: admin_add_property_images.php");

mysqli_close($con);

?>

Second Form: admin_add_property_images.php

<form class="form-horizontal" role="form" action="admin_insert_property_images.php" enctype="multipart/form-data" method="post">
    <div class="form-group">
        <label class="col-md-3 control-label">Upload Image:</label>
        <div class="col-md-8">
            <input class="form-control" name="file" id="file" value="" type="file"  required>
        </div>
    </div>

    <div class="form-group">
        <label class="col-md-3 control-label"></label>
            <div class="submit">
                <input class="btn btn-primary" value="Save " type="submit" name="submit">
            </div>  
    </div>

</form>

admin_insert_property_images.php

<?php
include('admin_session.php');

$con=mysqli_connect("localhost","qwe","pwd","qwe");
// Check connection
if (mysqli_connect_errno()) 
    {
        echo "Failed to connect to MySQL: " . mysqli_connect_error();
    }
//Replace $mysqli with your $con then. $con->query($sql);   
$allowedExts = array("gif", "jpeg", "jpg", "png");
$temp = explode(".", $_FILES["file"]["name"]);
$extension = end($temp);

if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& ($_FILES["file"]["size"] < 2000000)
&& in_array($extension, $allowedExts))  
    {
        if ($_FILES["file"]["error"] > 0) 
            {
                echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
            } 
        else 
            {
                if (file_exists("propertyimages/" . $_FILES["file"]["name"])) 
                    {
                        echo $_FILES["file"]["name"] . " already exists. ";
                    } 
                else 
                    {

                        $imagepath = "propertyimages/" . $_FILES["file"]["name"];
                        move_uploaded_file($_FILES["file"]["tmp_name"], $imagepath);
                        $sql="INSERT INTO propertyimages(propertyimage) VALUES ('".$imagepath."')";
                        if (!mysqli_query($con,$sql)) 
                            {
                                die('Error: ' . mysqli_error($con));
                            }
                    }
            }
    } 
else    
    {
        echo "Invalid file";
    }
?>

i tried to carry id from one page to next, but it didn't worked out the way i wanted. an someone tell me how can it be done

Answer 1

use mysqli_insert_id($con) fucntion save it in $_SESSION[''] and use it on any page with by adding session_start(); at the top.

**Note:**use mysqli_insert_id() function after your insert query;

look at your quesiton part below

**File Name:**admin_insert_property.php"

Just look at the query secion there. it has to be like this

$sql="INSERT INTO retailer_add_property (propertyname,propertytype) VALUES ('$propertyname','$propertytype')";

if (!mysqli_query($con,$sql)) 
    {
        die('Error: ' . mysqli_error($con));
    }

mysqli_query($con, $sql);   

$_SESSION['insert_id']=mysqli_insert_id($con);
//save the value in the $_SESSION


header("Location: admin_add_property_images.php");

Now you can use $_SESSION['insert_id']; at any page, if you use session_start(); at the top

check this link for more info http://php.net/manual/en/mysqli.insert-id.php

Answer 2

use $mysqli->insert_id in admin_insert_property.php page and modify code like this and get that id on a dmin_add_property_images.php page and use it as per your requirement.

mysqli_query($con, $sql);   

$lastId = $mysqli->insert_id;

header("Location: admin_add_property_images.php?id=".$lastId);

Answer 3

You need to make use of the $_GET variable. After the first insert just add in the header the id of the inserted item.

header("Location: admin_add_property_images.php?id=". $inserted_id;

This way you can pass it to other pages.