Hướng dẫn php mb_str_split

(PHP 7 >= 7.4.0, PHP 8)

mb_str_split — Given a multibyte string, return an array of its characters

Description

mb_str_split(string $string, int $length = 1, ?string $encoding = null): array

Parameters

The string to split into characters or chunks.

If specified, each element of the returned array will be composed of multiple characters instead of a single character.

The encoding parameter is the character encoding. If it is omitted or null, the internal character encoding value will be used.

A string specifying one of the supported encodings.

Return Values

mb_str_split() returns an array of strings.

Changelog

webmaster at redinfo dot co dot kr ¶

1 month ago

if( !function_exists('mb_str_split')){
    function mb_str_split(  $string = '', $length = 1 , $encoding = null ){
        if(!empty($string)){
            $split = array();
            $mb_strlen = mb_strlen($string,$encoding);
            for($pi = 0; $pi < $mb_strlen; $pi += $length){
                $substr = mb_substr($string, $pi,$length,$encoding);
                if( !empty($substr)){
                    $split[] = $substr;
                }
            }
        }
        return $split;
    }
}

info at ensostudio dot ru ¶

1 year ago

Note: function return NULL if can't convert argument type.

Polyfill PHP < 7.4 based on package "symfony/polyfill-mbstring":
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 (null !== $split_length && !\is_bool($split_length) && !\is_numeric($split_length)) {
        trigger_error('mb_str_split(): expects parameter 2 to be int, '.\gettype($split_length).' given', E_USER_WARNING);
        return null;
    }
    $split_length = (int) $split_length;
    if (1 > $split_length) {
        trigger_error('mb_str_split(): The length of each segment must be greater than zero', E_USER_WARNING);
        return false;
    }
    if (null === $encoding) {
        $encoding = mb_internal_encoding();
    } else {
        $encoding = (string) $encoding;
    }

        if (!

vovan-ve at yandex dot ru ¶

1 year ago

Lazy polyfill for UTF-8 only:

function utf8_str_split(string $input, int $splitLength = 1)
{
    $re = \sprintf('/\\G.{1,%d}+/us', $splitLength);
    \preg_match_all($re, $input, $m);
    return $m[0];
}