Why is there an extra empty row when splited by multibyte punctuation?

Question

Try this:

$pattern = '/[\x{ff0c},]/u';

//$string = "something here ; and there, oh,that's all!";
$string = 'hei,nihao，a ';


echo '<pre>', print_r( preg_split( $pattern, $string ), 1 ), '</pre>';
exit();

output:

<pre>Array
(
    [0] => hei,nihao，a
)
</pre>

Answer 1

The character you have is a fullwidth comma ( hex ff0c ), as well as a regular comma. Have you tried updating it to my version which accounts for it?

<?php
$pattern = '/[\x{ff0c},]/u';

//$string = "something here ; and there, oh,that's all!";
$string = 'hei,nihao，a ';


echo '<pre>', print_r( preg_split( $pattern, $string ), 1 ), '</pre>';

Output:

Array
(
    [0] => hei
    [1] => nihao
    [2] => a 
)