Replace any string before "/", PHP

Question

Hello,

I want to replace any string before "/", irrespective of the string length.

Thanks Jean

Answer 1

one way, assuming you want to change the string before the first "/".

$str = "anystring/the_rest/blah";
$s = explode("/",$str);
$s[0]="new string";
print_r ( implode("/",$s) );

Answer 2

echo preg_replace('/^[^\/]+/', 'baz', 'foo/bar');

Answer 3

Something like that would be the most efficient, although i still prefer the preg_replace() technique

$pos = strpos($input, '/');
if ($pos >= 0) {
    $output = $replacement . substr($input, $pos);
} else {
    $output = $input;
}