$file->sha1()
Returns the sha1 hash of the file
$file->sha1(): string
Return type
string
This method modifies the existing $file
object it is applied to and returns it again.
Parent class
Examples
$hashA = $fileA->sha1();
$hashB = $fileB->sha1();
if ($hashA === $hashB) {
echo 'The files are the same';
}