| protected static normalizeHelper ( string $number, array $normalizationReplacements, boolean $removeNonMatches ) : string | ||
| $number | string | a string of characters representing a phone number |
| $normalizationReplacements | array | a mapping of characters to what they should be replaced by in the normalized version of the phone number |
| $removeNonMatches | boolean | indicates whether characters that are not able to be replaced should be stripped from the number. If this is false, they will be left unchanged in the number. |
| return | string | the normalized string version of the phone number |
protected static function normalizeHelper($number, array $normalizationReplacements, $removeNonMatches)
{
$normalizedNumber = "";
$strLength = mb_strlen($number, 'UTF-8');
for ($i = 0; $i < $strLength; $i++) {
$character = mb_substr($number, $i, 1, 'UTF-8');
if (isset($normalizationReplacements[mb_strtoupper($character, 'UTF-8')])) {
$normalizedNumber .= $normalizationReplacements[mb_strtoupper($character, 'UTF-8')];
} else {
if (!$removeNonMatches) {
$normalizedNumber .= $character;
}
}
// If neither of the above are true, we remove this character.
}
return $normalizedNumber;
}