Example, we received a login this way
joao.silvestre
And I want to get the string with the following rule:
The first letter of the name + the 7 letters that comes after the point that separates the name of the last name, for example:
jsilvest
How do I capture this string by following the above rules in PHP?
You can do this, assuming that there will always be a dot between the names:
$username = 'joao.silvestre';
$names = explode('.', $username);
$final = $names[0][0].substr($names[1], 0, 7); // no segundo nome vamos extrair os caracteres a começar no indice 0 até termos 7 caracteres
echo $final; // jsilvest
This is a variation of the @Miguel response:
You can use this:
$nome = 'joao.silvestre';
$final = $nome[0].substr(explode('.', $nome)[1], 0, 7);
This works in PHP 5.5 and above, unless misled.
Option with REGEX
$str = 'joao.silvestre';
preg_match('/[^.][\w]{6}/', $str, $rs);
echo $str[0].$rs[0];
Time: 0.00000905990600585938 (9μs)