PHP Parse custom characters inside a string - php

Question

I need a help to parse the characters inside those brackets:
[]
{}
<>
{|}
<|>
For example, I have this string variable (Japanese):
$question = "この<部屋|へや>[に]{椅子|いす}[が]ありません";
Expected result in HTML:
Description
1) This is a particle. I will convert all word inside [] into HTML tag. Example: [に] will be converted into <span style="color:blue">に</span>. A full sentence can have multiple []. Note: I understand how to use str_replace.
2 and 4) This is normal kanji word which will be used as a question to the user. A full sentence can only have one {}.
3 and 5) This is normal kanji text. A full sentence can have multiple {}.
2, 3, 4, and 5) They will converted into Ruby html tags. Sometimes they will not have a | separator, which is not mandatory. From what I understand, I just need to explode the | characters. If explode return false or | not exist, I will use original value. Note: I understand how to use ruby tags (rb and rt).
My question
How do I parse characters 1-5 I mentioned above with PHP? What keyword I need to start?
Thanks.

Answer 1

Thanks to this page: Capturing text between square brackets in PHP, now I have my own answer.
Full code:
<?php
$text = "この<部屋|へや>[に]{椅子|いす}[が]ありません";
preg_match_all("/\[([^\]]*)\]/", $text, $square_brackets); //[]
preg_match_all("/{([^}]*)}/", $text, $curly_brackets); //{}
preg_match_all("/<([^}]*)>/", $text, $angle_brackets); //<>
print_r($square_brackets);
echo "\r\n";
print_r($curly_brackets);
echo "\r\n";
print_r($angle_brackets);
echo "\r\n";
Result:
Array
(
[0] => Array
(
[0] => [に]
[1] => [が]
)
[1] => Array
(
[0] => に
[1] => が
)
)
Array
(
[0] => Array
(
[0] => {椅子|いす}
)
[1] => Array
(
[0] => 椅子|いす
)
)
Array
(
[0] => Array
(
[0] => <部屋|へや>
)
[1] => Array
(
[0] => 部屋|へや
)
)
Thanks.