38 lines
764 B
PHP
38 lines
764 B
PHP
<?php
|
|
|
|
namespace App\Services\SmsBilling;
|
|
|
|
class SmsSegmentCalculator
|
|
{
|
|
private const PERSIAN_LIMITS = [70, 64, 67];
|
|
|
|
public function countParts(string $text): int
|
|
{
|
|
$length = mb_strlen(trim($text), 'UTF-8');
|
|
|
|
if ($length <= 0) {
|
|
return 0;
|
|
}
|
|
|
|
$first = self::PERSIAN_LIMITS[0];
|
|
$second = self::PERSIAN_LIMITS[1];
|
|
$rest = self::PERSIAN_LIMITS[2];
|
|
|
|
if ($length <= $first) {
|
|
return 1;
|
|
}
|
|
|
|
if ($length <= $first + $second) {
|
|
return 2;
|
|
}
|
|
|
|
$thirdThreshold = $first + $second + $rest;
|
|
|
|
if ($length <= $thirdThreshold) {
|
|
return 3;
|
|
}
|
|
|
|
return 3 + (int) ceil(($length - $thirdThreshold) / $rest);
|
|
}
|
|
}
|