How can the PHP code between [php'] and [/php'] be properly displayed and executed?

To properly display and execute PHP code between [php'] and [/php'], you can use a regular expression to extract the PHP code, evaluate it using the `eval()` function, and then display the result. Be cautious when using `eval()` as it can be a security risk if not used properly.

// Extract PHP code between [php'] and [/php']
preg_match('/\[php\'](.*)\[\/php\']/', $content, $matches);
$phpCode = $matches[1];

// Evaluate the extracted PHP code
eval($phpCode);