Edit: Str.php
<?php namespace Nextend\Framework\Misc; use Nextend\Framework\Misc\StringPhp\MultiByte; use Nextend\Framework\Misc\StringPhp\SingleByte; use Nextend\Framework\Misc\StringPhp\StringInterface; use Nextend\Framework\Pattern\SingletonTrait; class Str { use SingletonTrait; /** * @var StringInterface */ private static $engine; protected function init() { if (function_exists('mb_strpos')) { self::$engine = new MultiByte(); } else { self::$engine = new SingleByte(); } } public static function strpos($haystack, $needle, $offset = 0) { return self::$engine->strpos($haystack, $needle, $offset); } public static function substr($string, $start, $length = null) { return self::$engine->substr($string, $start, $length); } public static function strlen($string) { return self::$engine->strlen($string); } } Str::getInstance();
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