Question

I want to cut string with replacement

$string = "my super very long string";
$start = 3;
$end = 17;

I need cut from $start to $end and replace it with $short = "short"

Result must be "my short string";

Answer 1

You can use substr_replace() like so:

$string = "my super very long string";
$short = "short";
$start = 3;
$end = 18;
$length = $end - $start;

$new_string = substr_replace($string, $short, $start, $length);

You can see a working example on this codepad.

Whenever you want to do string manipulation, it’s a good idea to take a look at the string functions in the PHP manual to see if PHP has a function that does what you need.