包含具有重复类的文件

Question

I want to include a file which contains a class that already exists in my application. Obviously this results in:

PHP Fatal error:  Cannot redeclare class XYZ

For reasons I won't go in to here, I cannot change the code of the file in question, nor the file which contains the original class. For this reason, I don't think that namespaces are an option - though I'm a bit new to the concept so I could be wrong.

• Is there a way to dynamically change the contents of the file being read to change classname declaration on the fly?
• Can I somehow destroy or un-include the duplicate class which already exists?

I realize this is not likely to be clean. Any ideas for a workaround no matter how ugly are welcome.

Answer 1

I'll answer my own question here per the idea mentioned in comments.

$path = "/path/to/include/file.php";
$className = "OriginalClassname";
$tempClass = "ReplacementClassname";

$buffer = file_get_contents($file);
$buffer = str_replace($className,$tempClass,$buffer);
$file = 'temp.php';
file_put_contents($file, $buffer);
include_once($file);
unlink($file);

In a nutshell:

• read the file to a variable
• replace the classname
• write the variable to a temporary file
• include temp file
• remove temp file

Worked like a charm.