3v4l.org

run code in 500+ PHP versions simultaneously

@ 2019-11-15T02:40:30Z

<?php

if (!function_exists('mb_str_split')){
    function mb_str_split($string, $split_length = 1, $encoding = null)
    {
        if (null !== $string && !\is_scalar($string) && !(\is_object($string) && \method_exists($string, '__toString'))) {
            trigger_error('mb_str_split() expects parameter 1 to be string, '.\gettype($string).' given', E_USER_WARNING);

            return null;
        }

        if ($split_length < 1) {
            trigger_error('The length of each segment must be greater than zero', E_USER_WARNING);

            return false;
        }

        if (null === $encoding) {
            $encoding = mb_internal_encoding();
        }

        if (1 === $split_length && 'UTF-8' === $encoding) {
            return preg_split('//u', $string, null, PREG_SPLIT_NO_EMPTY);
        }

        $result = array();
        $length = mb_strlen($string, $encoding);

        for ($i = 0; $i < $length; $i += $split_length) {
            $result[] = mb_substr($string, $i, $split_length, $encoding);
        }

        return $result;
    }
}

$str = str_repeat('😄', 1000); 

$start = microtime(1);

for($i=0; $i<1000; $i++) {
    $arr = mb_str_split($str);
}

echo microtime(1)-$start;

Output for 7.4.1: 0.033896923065186
Output for 7.4.0: 0.040415048599243
Output for 7.3.13: 0.23058700561523
Output for 7.3.12: 0.19432210922241
Output for 7.3.11: 0.19171714782715
Output for 7.3.10: 0.2449471950531
Output for 7.3.9: 0.19639801979065
Output for 7.3.8: 0.20354294776917
Output for 7.3.7: 0.21655917167664
Output for 7.3.6: 0.2844500541687
Output for 7.3.5: 0.28146910667419
Output for 7.3.4: 0.23003721237183
Output for 7.3.3: 0.2065269947052
Output for 7.3.2: 0.18680095672607
Output for 7.3.1: 0.21680378913879
Output for 7.3.0: 0.21085405349731
Output for 7.2.26: 0.20239090919495
Output for 7.2.25: 0.30532193183899
Output for 7.2.24: 0.20221209526062
Output for 7.2.23: 0.18260598182678
Output for 7.2.22: 0.17777299880981
Output for 7.2.21: 0.18500709533691
Output for 7.2.20: 0.17156887054443
Output for 7.2.19: 0.1679048538208
Output for 7.2.18: 0.16091084480286
Output for 7.2.17: 0.16561102867126
Output for 7.2.16: 0.16445279121399
Output for 7.2.15: 0.19976305961609
Output for 7.2.14: 0.18854594230652
Output for 7.2.13: 0.21801805496216
Output for 7.2.12: 0.21370410919189
Output for 7.2.11: 0.21720099449158
Output for 7.2.10: 0.15515089035034
Output for 7.2.9: 0.18852090835571
Output for 7.2.8: 0.21356606483459
Output for 7.2.7: 0.21547698974609
Output for 7.2.6: 0.17099189758301
Output for 7.2.5: 0.20596790313721
Output for 7.2.4: 0.16546988487244
Output for 7.2.3: 0.19264101982117
Output for 7.2.2: 0.18343806266785
Output for 7.2.1: 0.16647410392761
Output for 7.2.0: 0.15336894989014
Output for 7.1.33: 0.17024803161621
Output for 7.1.32: 0.19562602043152
Output for 7.1.31: 0.17822098731995
Output for 7.1.30: 0.18892312049866
Output for 7.1.29: 0.16634202003479
Output for 7.1.28: 0.17726016044617
Output for 7.1.27: 0.16049098968506
Output for 7.1.26: 0.23130798339844
Output for 7.1.25: 0.17040109634399
Output for 7.1.24: 0.21914196014404
Output for 7.1.23: 0.20240783691406
Output for 7.1.22: 0.1659631729126
Output for 7.1.21: 0.1624059677124
Output for 7.1.20: 0.18893504142761
Output for 7.1.19: 0.16774296760559
Output for 7.1.18: 0.19831395149231
Output for 7.1.17: 0.20413494110107
Output for 7.1.16: 0.19932794570923
Output for 7.1.15: 0.19751691818237
Output for 7.1.14: 0.19146990776062
Output for 7.1.13: 0.1749849319458
Output for 7.1.12: 0.16980290412903
Output for 7.1.11: 0.1889431476593
Output for 7.1.10: 0.16812896728516
Output for 7.1.9: 0.17242789268494
Output for 7.1.8: 0.17456722259521
Output for 7.1.7: 0.16737079620361
Output for 7.1.6: 0.18716502189636
Output for 7.1.5: 0.20184898376465
Output for 7.1.4: 0.20581412315369
Output for 7.1.3: 0.16705799102783
Output for 7.1.2: 0.19424700737
Output for 7.1.1: 0.16908288002014
Output for 7.1.0: 0.18578100204468

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52.74 ms | 800 KiB | 4 Q