nur-sery/nur_src/ldap/syntaxes/TelephoneSyntax.php

<?php
namespace nur\ldap\syntaxes;

use nur\data\types\TelephoneType;
use nur\ldap\labels;

class TelephoneSyntax extends StringSyntax {
  function __construct() {
    $this->type = new TelephoneType();
  }

  /** @var TelephoneType */
  protected $type;

  function php2ldap($value): ?string {
    $value = parent::php2ldap($value);
    if ($value === null) return null;
    labels::strip($value, $label);
    $type = $this->type;
    $value = $type->ensureInternational($type->with($value));
    return labels::add($value, $label);
  }

  function ldap2php(string $value): string {
    labels::strip($value, $label);
    $value = $this->type->ensureLocal($value);
    return labels::add($value, $label);
  }
}