Remove a string from the beginning of a string

Question

I have a string that looks like this:

$str = \"bla_string_bla_bla_bla\";

How can I remove the first bla_; but only if it\'s fo

Answer 1

Nice speed, but this is hard-coded to depend on the needle ending with _. Is there a general version? – toddmo Jun 29 at 23:26

A general version:

$parts = explode($start, $full, 2);
if ($parts[0] === '') {
    $end = $parts[1];
} else {
    $fail = true;
}

Some benchmarks:

On my quite old home PC:

$ php bench.php

Outputs:

   strpos+strlen : 0.158388 s
         explode : 0.126772 s