将else添加到rename（）函数

Question

I'm writing a simple rename form that renames the folder name. It works fine, but if the file doesn't exist PHP gives me an error.

<form> 
    <input type="text"  value="folder name you want to rename">
    <input type="submit">
</form>

And this is my PHP code:

<?php
session_start();
$_SESSION['name'] = $_POST['name'];

rename("../folders/".$_POST['name']."","../renamed/new-name");
?>

The code works perfectly, but I want to add an if/else statement because when I run the script for a folder that does not exist, I get this error.

Does not exist

I want to remove the error, and simply output "doesn't exist".

Answer 1

You could always just use a simple if statement to check that rename() worked, since it returns a boolean (true, or false) value. Read more on PHP manual.

So you could write something along these lines:

if(rename("../folders/".$_POST['name']."","../renamed/new-name"))
{
    echo "Folder renamed";
    // more code...
}
else
{
    echo "Folder does not exist.";
    // more code...
}