restore database in php - php

Question

I'm trying to restore my database using this code and it doesn't work
$server_name = "localhost";
$username = "root";
$password = "admin";
$database_name = "uvatravelclone";
$file = basename($_POST["file_open"]);
//$cmd = "mysql -h {$server_name} -u {$username} -p{$password} {$database_name} $file";
$cmd = "mysql -e {$file}";
if (exec($cmd) == true){
echo "succes";
}
else{
echo " error";
}
i need to get the file name or file path of the data because i'm using
<input type=file>
to open the file.

Answer 1

When you use <input type="file" name="file_open">, the information about the uploaded file is put in $_FILES, not $_POST. The file contents are put into a temporary file, and $_FILES['file_open']['tmp_name'] contains the pathname to this temporary file. You can then redirect this to the mysql command, using < filename for shell input redirection.
$server_name = "localhost";
$username = "root";
$password = "admin";
$database_name = "uvatravelclone";
$file = $_FILES['file_open']['tmp_name']
$cmd = "mysql -h {$server_name} -u {$username} -p{$password} {$database_name} < $file";
if (exec($cmd)){
echo "success";
}
else{
echo " error";
}
Note that the return value of exec() is the last line of output of the command, not a true/false value that indicates success.

Answer 2

Things to be known, when you have a type=file in your HTML Form, its necessary to use method="post" and enctype="multipart/form-data"
Example
<form method="post" enctype="multipart/form-data">
<input type="file" name="filename" />
<button>Upload Now</button>
</form>
Render Using PHP
<?php
$getFile = $_FILES["filename"];
var_dump($getFile); //Prints uploaded file details
//Use copy or move_uploaded_file to store the uploaded file on server
//its always better to use move_uploaded_file for the purpose.
?>
Know more it in this link http://www.w3schools.com/php/php_file_upload.asp.

Answer 3

+1 to Barmar's answer, but here's another tip: exec() can fetch the exit status of the command you execute, and this is a more accurate indicator of success or failure.
Traditionally, when a command has an exit status of 0 it means success, and any nonzero value means some error.
exec($cmd, $output, $exitStatus);
if (0 == $exitStatus)){
echo "success";
}
else{
echo " error";
}
See http://php.net/manual/en/function.exec.php