Can i use this statement?

<?php
$file = 'example.txt';
$newfile = 'example.txt.bak';

if (!copy($file, $newfile)) {
    echo "failed to copy $file...\n";
}
?>

Now instead of example.txt can i use "http://engine.searchr.us/web-search.phtml?search=TEST+SEARCH" ?

Is it possi开发者_C百科ble ?

Yes you can, as long as allow_url_fopen is enabled in your PHP config.

Yes, it is possible. As the manual says:

Both source and dest may now be URLs if the "fopen wrappers" have been enabled. See fopen() for more details.

You can read remote files using PHP

$contents = '';
$file = fopen ("http://www.example.com/", "r");
if (!$file) {
    echo "<p>Unable to open remote file.\n";
    exit;
}
while (!feof ($file)) {
    $line = fgets ($file, 1024);
    $contents .= $line;
}
fclose($file);

echo $contents;

Source

http://php.net/manual/en/features.remote-files.php

As Emil Vikström said you must have allow_url_fopen directive enabled. Documentation also says that this directive can be set only into php.ini file.