Vladimir Bryzgalov
73 lines
2.1 KiB
PHP
73 lines
2.1 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Cf7stg;
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final class PhoneParser
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{
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/**
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* Extract and normalize the first phone number from arbitrary text.
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*
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* @return array{e164:string,pretty:string,is_russian:bool}|null
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*/
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public static function parse(string $text): ?array
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{
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$text = (string)$text;
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if ($text === '') {
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return null;
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}
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// Find a run of digits, spaces, dashes, parens, dots and a leading '+',
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// with at least 10 digits in total. Walk candidates left-to-right and
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// pick the first that yields 10 or 11 digits.
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if (!preg_match_all('/\+?[\d][\d\s().\-]{8,}/u', $text, $m)) {
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return null;
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}
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foreach ($m[0] as $candidate) {
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$digits = preg_replace('/\D+/', '', $candidate) ?? '';
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$plus = strpos($candidate, '+') === 0;
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// Russian detection & normalization
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if (!$plus && strlen($digits) === 11 && $digits[0] === '8') {
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$digits = '7' . substr($digits, 1);
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}
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if (!$plus && strlen($digits) === 10 && preg_match('/^[3-9]/', $digits)) {
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// Bare 10-digit RU mobile/landline area code
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$digits = '7' . $digits;
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}
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if (strlen($digits) < 10 || strlen($digits) > 15) {
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continue;
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}
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$e164 = '+' . $digits;
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$is_ru = (strlen($digits) === 11 && $digits[0] === '7');
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return [
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'e164' => $e164,
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'pretty' => self::format_pretty($e164, $is_ru),
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'is_russian' => $is_ru,
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];
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}
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return null;
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}
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private static function format_pretty(string $e164, bool $is_ru): string
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{
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if ($is_ru) {
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// +7 XXX XXX-XX-XX → "+7 (XXX) XXX-XX-XX"
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$d = substr($e164, 2);
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return sprintf(
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'+7 (%s) %s-%s-%s',
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substr($d, 0, 3),
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substr($d, 3, 3),
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substr($d, 6, 2),
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substr($d, 8, 2)
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);
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}
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return $e164;
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}
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}
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