add `fixupAttributes` function

[simonLeary42]

DRY:

phpopenldaper/src/PHPOpenLDAPer/LDAPEntry.php

Lines 311 to 312 in 8518116

	$attr = strtolower($attr);
	$this->write([$attr => $this->convertToArray($value)]);

phpopenldaper/src/PHPOpenLDAPer/LDAPEntry.php

Lines 323 to 325 in 8518116

	$attr = strtolower($attr);
	$old_value = $this->getAttribute($attr);
	$this->write([$attr => array_merge($old_value, $this->convertToArray($value))]);

phpopenldaper/src/PHPOpenLDAPer/LDAPEntry.php

Line 335 in 8518116

$this->write(array_map([$this, "convertToArray"], array_change_key_case($arr, CASE_LOWER)));

phpopenldaper/src/PHPOpenLDAPer/LDAPEntry.php

Lines 397 to 402 in 8518116

	$attr = strtolower($attr);
	if (!$this->exists()) {
	throw new RuntimeException("cannot get attribute from nonexistent entry");
	}
	if (array_key_exists($attr, $this->object)) {
	return $this->convertToArray($this->object[$attr]);

phpopenldaper/src/PHPOpenLDAPer/LDAPEntry.php

Lines 422 to 423 in 8518116

	$key = strtolower($key);
	$output[$key] = $this->convertToArray($val);