PHP Replace [plugin-something] with include_once - php

Question

I am fairly new to 'advanced' PHP and i am struggling with this problem for a week now. I have read almost everything on this forum to find a solution, but nothing worked quite well.
I want to get content from a database and replace all text like [plugin-example] with an include_once(example.php)
The reason behind it is to make something similar like a 'shortcode' for a content management system.
I tried several codes, and this one is the nearest to my solution (i think/hope). The problem is that this replaces both [plugins] with only the last match value (slider in this case).
<?php
//get database row
while($page = mysqli_fetch_array($hl_page)){
//regex
$search = "/\[plugin-(.*)\]/";
//get all matches with search
$content = htmlspecialchars_decode("This is my blog
[plugin-blog]
And this is my slider
[plugin-slider]");
preg_match_all($search, $content , $matches);
foreach($matches[1] as $match) {
$match;
}
enter code here
//get file
ob_start();
include_once(''.$match.'.php');
$replace = ob_get_contents();
ob_end_clean();
//echo content from page
echo preg_replace($search,$replace,$content);
}?>
That code outputs:
textual content
[the include_once('slider.php')] <---should be blog.php
more textual content
[the include_once('slider.php'] <--- this one is good
All help will be really appreciated!

Answer 1

Put the replacement inside the foreach loop:
foreach($matches[1] as $match) {
//get file
ob_start();
include_once(''.$match.'.php');
$replace = ob_get_contents();
ob_end_clean();
$content = preg_replace($search, $replace, $content);
}
echo $content;

Answer 2

If I have well understand what you are trying to do, a more easy way using preg_split:
$content = <<<'EOD'
This is my blog
[plugin-blog]
And this is my slider
[plugin-slider]
EOD;
$parts = preg_split('~\[plugin-([^]]+)]~', $content, -1, PREG_SPLIT_DELIM_CAPTURE);
foreach ($parts as $k => $v) {
if ($k & 1)
include_once("$v.php");
else
echo htmlspecialchars_decode($v);
}