Question

I don’t know exactly how to say this, I’ll use an example.

//[$var:Username|n] will print username with n length
$myText = 'The participants are [$var:Username|10], [$var:Username|8], and [$var:Username|6]';
$username = array('Alexandrite', 'Maximillian', 'Angelina');
$result = someFunction('[$var:Username|n]', $username, $myText);
echo $result;
//The participants are Alexandrit, Maximill, and Angeli

Any idea how to do this? Maybe using preg_replace?

Answer 1

I’m interested to know why you would even need to do this. Regardless:

preg_replace_callback('/\[\$var:Username\|(\d+)\]/', function ($match)
    use (&$count, $username
) {
    return substr($username[$count++], 0, $match[1]);
}, $myText);