从php中的本地服务器文件夹中删除图像

Question

I wrote one php script in these script i delete all the images data from table but i want to delete also that images which are deleted from table from the my image folder.Here i delete the image using sql self join.What i do to delete the images from my folder which are deleted from my datbase.

<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "cribsuite";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 
$sql = "delete t1
from rr2s4_cma_images t1 JOIN rr2s4_cma_images t2
on t1.matrix_unique_id = t2.matrix_unique_id
and t1.ordering > t2.ordering";
//echo $sql;
$vin = mysql_query($sql);
//echo $sql;
if ($conn->query($sql) === TRUE) {
    echo "Record deleted successfully";
} else {
    echo "Error deleting record: " . $conn->error;
}

$conn->close();


[![enter image description here][1]][1]

?>

Answer 1

You will want to build an array of image filenames to delete from your server. To do that, you will want to do the following:

1. Run a SELECT query using the same WHERE statements you have here.

2. Loop through the results of that SELECT query and add each image filename to an array of filenames. I would recommend using the unique id of the database record as the key for the each respective element in the array.

3. Once you have that array built, you will want to loop through that array and delete the record from the database and then the file from the server. You can use the unlink() function that is native to PHP to do the file deletion.

NOTE : If you are wanting to make this a script that is executed on a scheduled basis, I would recommend keep track any file that does not get deleted or causes any errors or warnings. That would help troubleshoot any issue that may occur in the future.

I hope that helps. Let me know if you need any clarifications on any of this.