How to delete an image from a folder in PHP - php

Question

I'm trying to delete an image from data base as well as from a folder in PHP5, but I am unable to delete it. Here is my code:
<?php
$obj=new Crud("localhost","root","","3g");
class Crud{
public $mysqli;
public $data;
public function __construct($host,$username,$password,$db_name) {
$this->mysqli = new mysqli($host, $username, $password, $db_name);
if (mysqli_connect_errno()) {
echo "Error: Could not connect to database.";
exit;
} /*else{
echo"Your Database successfully connected";
}*/
}
public function __destruct() {
$this->mysqli->close();
}
public function read() {
$query="SELECT * FROM fashion";
$result= $this->mysqli->query($query);
$num_result=$result->num_rows;
if ($num_result>0) {
while($rows=$result->fetch_assoc()){
$this->data[]=$rows;
//print_r($rows);
}
return $this->data;
}
}
public function delete($id){
$query="DELETE FROM fashion WHERE id='$id'";
$result= $this->mysqli->query($query) or die(mysqli_connect_errno() . "Data cannot inserted");
if ($result) {
header('location:fashion.php');
}
}
}
?>
By using the above code, the record was deleted only from database, but the image remains in the folder.

Answer 1

To delete an image from your folder you have to use unlink
$file = "yourimage.jpg";
unlink($file);
if image is in any other directory you have to specify full directory Path like
$file = "www/images/yourimage.jpg";

Answer 2

The solution you are looking for is the unlink function which does that - unlinks and deletes a file.
You need the name of the file and the path to the file from the PHP current working directory to make it work. Kamrans answer shows this.
So:
public function delete($id){
$query = "SELECT filepath FROM fashion WHERE id = ? LIMIT 1";
$fileLocale = $this->mysqli->prepare($query);
$fileLocale->bind_param("i",$id);
$fileLocale->execute();
$result = $fileLocale->get_result();
$fileLocale->close();
while ($row = $result->fetch_array(MYSQLI_NUM))
{
/***
* only 1 result is returned so easy to collect
***/
foreach ($row as $r)
{
$filepath = $r;
}
}
unset($r,$row);
/***
$filepath is now the string of the location of the file.
***/
if (unlink($filepath)){
$query="DELETE FROM fashion WHERE id=? LIMIT 1";
$delete = $this->mysqli->prepare($query);
$delete->bind_param("i",$id);
$delete->execute();
$affectedRows = $delete->affected_rows;
if ($affectedRows == 1) {
header('location:fashion.php');
die();
}
when using header always place a die command after it.
use unlink to delete a file, it will return TRUE on success.
filepath is the column in your database that you store the file location.
connect and use the database using OOP principles, use prepared statements rather than queries, there is FAR less risk to you or your code.
Add LIMIT to your SQL statements so if there is an issue, it will not mess up your whole table, for example. A safety measure.

Answer 3

Before you delete the database reference, use it to fill the file name, which is what I am assuming is stored in the database. If $id is the file name, just add it into a system command to remove the file. This assumes Linux.
public function delete($id){
exec('rm /path to file/' . $id);//delete the file via system command.
$query="DELETE FROM fashion WHERE id='$id'";
$result= $this->mysqli->query($query) or die(mysqli_connect_errno() . "Data cannot inserted");
if ($result) {
header('location:fashion.php');
die();
}
}