I have to create some php pages that allow you to insert and display some random images (saved as blob in my mysql DB). Well, when i try it it give to me that error: Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource. And here my page:
$n="SELECT COUNT('id_product')
FROM 'products'";
$value=mysql_query($n);
do
{
$selectionASC='SELECT id_product
FROM products
ORDER BY id_product ASC
LIMIT 1';
$selectionDESC='SELECT id_product
FROM products
ORDER BY id_product DESC
LIMIT 1';
$ASC=mysql_query($selectionASC)
or die ('Impossible execute the query <br />').mysql_error();
$DESC=mysql_query($selectionDESC)
or die ('Impossible execute the query <br />').mysql_error();
//____________________________________________________________________
$rand_n=rand(($ASC-1),($DESC+1));
//____________________________________________________________________
$selected='SELECT id_product,name, price, img
FROM products
WHERE id_product='.$rand_n;
//____________________________________________________________________
while($row=mysql_fetch_array($selected))
{
echo "Product'id:  "; echo $row[0];
echo '<br />';
echo "Name:  "; echo $row[1];
echo '<br />';
echo "Price::  "; echo $row[2];
echo '<br />';
echo "Immage: <img src='images/".$row['img']."' alt='Image'>";;
echo '<hr> <br />';
$value--;
}
}
while ($value==0)
could someone be so kind to tell me where am I wrong? Thanks and sorry for my poor english!
EDIT:
$allowedExts=array("gif", "jpeg", "jpg", "png");
if(isset($_POST['submit']))
{
$temp=explode(".", $_FILES["file"]["name"]);
$extension=end($temp);
if(isset($_FILES['file']['name']))
{
if(!empty($_FILES['file']['name']))
{
$directory='\www\v1.2\loaded';
$uploadfile = $directory . basename($_FILES['file']['name']);
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"))
&& ($_FILES["file"]["size"] < 20000)
&& in_array($extension, $allowedExts))
{
if ($_FILES["file"]["error"] > 0)
{
echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
}
else
{
//$nameImage=$_FILES(["file"]["name"]);
$typeImage=$_FILES["file"]["type"];
$sizeImage=$_FILES["file"]["size"];
if (file_exists("upload/" . $_FILES["file"]["name"]))
{
echo $_FILES["file"]["name"] . " already exists. ";
}
else
{
if (move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile))
{
$insert="INSERT INTO 'img'
VALUES ('','$uploadfile','$typeImage','$sizeImage')";
echo "File's extension valid, upload executed";
}
else
{
echo "Upload failed: ceck the size and the extension";
}
}
}
}
else
{
echo "Invalid file";
}
}
}
}
don't pass img
in array. you have to pass index number because you have used mysql_fetch_array
so, replace this line from code,
echo "Immage: <img src='images/".$row['img']."' alt='Image'>";;
to
echo "Immage: <img src='images/".$row['3']."' alt='Image'>";
Here i guess img url is store on 3rd index. please must check image index and replace the value of 3
================================================================================
Better way to use mysql_fetch_assoc
. In that case you don't require to find index of column from database
simply replace while loop from your code. it will Definitely work
while($row=mysql_fetch_assoc($selected))
{
echo "Product'id:  "; echo $row['id_product'];
echo '<br />';
echo "Name:  "; echo $row['name'];
echo '<br />';
echo "Price::  "; echo $row['price'];
echo '<br />';
echo "Immage: <img src='images/".$row['img']."' alt='Image'>";
echo '<hr> <br />';
$value--;
}
As per your code I see that you miss the statement of
$selected = mysql_query($selected);
above the line of
while($row=mysql_fetch_array($selected)){ ........ }
Check this should help you.
I think the problem here is $rand_n=rand(($ASC-1),($DESC+1));
, $ASC and $DESC
are resource not integers, instead you should probably use $ASC = mysql_num_rows($ASC); $DESC = mysql_num_rows($DESC);
$ASC = mysql_num_rows($ASC); $DESC = mysql_num_rows($DESC);
then you can use $rand_n=rand(($ASC-1),($DESC+1));
$selected='SELECT id_product,name, price, img
FROM products
WHERE id_product='.$rand_n;
$selected = mysql_query($selected);
while($row=mysql_fetch_assoc($selected))
{
echo "Product'id:  "; echo $row['id_product'];
echo '<br />';
echo "Name:  "; echo $row['name'];
echo '<br />';
echo "Price::  "; echo $row['price'];
echo '<br />';
echo "Immage: <img src='images/".$row['img']."' alt='Image'>";
echo '<hr> <br />';
$value--;
}
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