PHP supports Chinese _php instance of dividing a group of code by string length

Here is the code I wrote to split the Chinese and English mixed characters:

<?php
function Mbstrsplit ($string, $len =1) {
  $start = 0;
  $strlen = Mb_strlen ($string);
  while ($strlen) {
    $array [] = Mb_substr ($string, $start, $len, "UTF8");
    $string = Mb_substr ($string, $len, $strlen, "UTF8");
    $strlen = Mb_strlen ($string);
  }
  return $array;
}

Header (' Content-type:text/html;charset=utf-8 ');
$str = ' I love Beijing 3 I love Shanghai-I love Xianggang ';
$r = Mbstrsplit ($str, 4);
Echo ' <pre> ';
Print_r ($r);
Echo ' </pre> ';
? >

Run Result:

Array
(
  [0] => I love Beijing
  [1] => 3 I fell in love
  [2] => sea-I love
  [3] => Xian
  [4] => Ggan
  [5] => G
)

<?php
 function Str_split_unicode ($str, $l = 0) {
 if ($l > 0) {
 $ret = array ();
 $len = Mb_strlen ($str, "UTF-8");
 for ($i = 0; $i < $len; $i + = $l) {
 $ret [] = Mb_substr ($str, $i, $l, "UTF-8");
}
 return $ret;
}
 Return Preg_split ("//u", $str,-1, preg_split_no_empty);
>
 $s = "not yet SSS see GFG rtret Immortal";//Mild Milk Print_r
 (Str_split ($s, 5));
 Print_r (Str_split_unicode ($s, 5));

The output
 //array ([0] => also [1] => as [2] => SSS [3] => See GF [4] => G [5] The => [6] RTR et [7] => Rot)
 //array ([0] => has not yet fulfilled s [1] => SS See GF [2] => g person not RT [3] => ret Immortal)

The above mentioned is the entire content of this article, I hope you can enjoy.