Question

I have a string which looks like:

$data = '
 Some string
 [code=cpp]
 int a = 5;
 [/code]
 Another string
 [code=php]
 echo "5";
 [/code]';

And a function which takes 2 arguments: data inside code-tag and language (cpp, php, …):

function Foo($data, $lang) { echo ...RESULT...; }

What is the best way to replace all code-tags inside $data using my Foo function? The result should be:

$data = 
 'Some string' . 
 Foo('int a = 5;', 'cpp') .
 'Another string' . 
 Foo('echo "5";', 'php');

---

function Foo($matches)
{
    echo SOME_ANOTHER($matches[2], $matches[1]);
}
preg_replace_callback('#\[code=(.*?)\](.*?)\[/code\]#si' , 'Foo', $data);

But this code doesn’t save text outside the code-tags.

Answer 1

function Foo($matches)
{
    return SOME_ANOTHER($matches[2], $matches[1]);
}
echo preg_replace_callback('#\[code=(.*?)\](.*?)\[/code\]#si' , 'Foo', $data);