Online PHP editor | perf for FDO5v

<?php class StringNormalizer { public function transliterate($inputString) { return String::transliterate(trim($inputString)); } public function toLowerTransliterate($inputString) { return strtolower($this->transliterate($inputString)); } public function transliterateArray(array $inputs) { $result = array(); foreach ($inputs as $input) { $transiteratedInput = $this->transliterate($input); $result[strtolower($transiteratedInput)] = $transiteratedInput; } return $result; } public function transliterateKeyArray(array $inputs) { $result = array(); foreach ($inputs as $key => $input) { $result[$this->toLowerTransliterate($key)] = $input; } return $result; } } class String { const IN_CHARSET = 'UTF-8'; const OUT_CHARSET = 'ASCII//TRANSLIT'; const ALLOWED_CHARACTERS_FILTER = '/[^0-9a-zA-Z_\. \-]+/'; const DEFAULT_PREFIX = 'export_'; public static function transliterate($inputString) { return $outputString = preg_replace(self::ALLOWED_CHARACTERS_FILTER, '', iconv(self::IN_CHARSET, self::OUT_CHARSET, $inputString)); } private function __construct() { } } $strings = array( ' aąbcćdeęfghijklłmnńoóprsśtuwyzźżAĄBCĆDEĘFGHIJKLŁMNŃOÓPRSŚTUWYZŹŻ ', ' aäbcdefghijklmnoöpqrsẞtuüvwxyzAÄBCDEFGHIJKLMNOÖPQRSßTUÜVWXYZ ', ' _. ()-\\/ ' ); $sut = new StringNormalizer(); $results = array(); foreach ($strings as $string) { $results[] = $sut->transliterate($string); } var_dump($results) ;

Version	System time (s)	User time (s)	Memory (MiB)
7.0.2	0.030	0.073	20.24
7.0.1	0.007	0.043	20.09
7.0.0	0.013	0.080	20.08
5.6.28	0.003	0.057	21.26
5.6.20	0.010	0.037	18.34
5.6.19	0.017	0.063	20.71
5.6.18	0.017	0.047	20.49
5.6.17	0.023	0.090	20.61
5.6.16	0.010	0.083	20.73
5.6.15	0.010	0.037	18.34
5.6.14	0.010	0.070	18.27
5.6.13	0.010	0.043	18.42
5.6.12	0.017	0.077	21.23
5.6.11	0.007	0.077	21.18
5.6.10	0.007	0.077	21.12
5.6.9	0.003	0.087	21.18
5.6.8	0.003	0.040	20.68
5.5.34	0.007	0.083	18.19
5.5.33	0.017	0.047	20.45
5.5.32	0.037	0.067	20.43
5.5.31	0.027	0.077	20.45
5.5.30	0.013	0.077	18.13
5.5.29	0.000	0.053	18.23
5.5.28	0.013	0.063	21.04
5.5.27	0.003	0.093	20.98
5.5.26	0.013	0.070	20.82
5.5.25	0.010	0.037	20.72
5.5.24	0.020	0.080	20.50