PHP: Get instance of static class by string value
- by Tirithen
I'm working on a php web api that was handed to me with a lot of code that needs to be refactored. The ones that wrote the code wanted to include a static configuration class to an api resource and then get an instance of that class something like this:
<?php
$obj = "User";
$confObjectSuffix = "_conf";
$confObject = $obj.$confObjectSuffix;
if ($confObject::inst()->checkMethod($method)) {
.....
This gives the error "Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in ....." since $confObject is a string and not a object.
I wrote some testcode:
<?php
$class = "User_conf";
echo "<pre>";
print_r($$class::Inst());
echo "</pre>";
class User_conf {
private static $INSTANCE = null;
public static function Inst() {
if(User_conf::$INSTANCE === null) {
User_conf::$INSTANCE = new User_conf();
}
return User_conf::$INSTANCE;
}
}
But can't get it to work with $$ either, is there some other way around this? I don't want to rewrite more than necessary.
