How can I call a static method from a class if all I have is a string of the class name?
PhpPhp Problem Overview
How would I get something like this to work?
$class_name = 'ClassPeer';
$class_name::doSomething();
Php Solutions
Solution 1 - Php
Depending on version of PHP:
call_user_func(array($class_name, 'doSomething'));
call_user_func($class_name .'::doSomething'); // >5.2.3
Solution 2 - Php
To unleash the power of IDE autocomplete and error detection, use this:
$class_name = 'ClassPeer';
$r = new \ReflectionClass($class_name );
// @param ClassPeer $instance
$instance = $r->newInstanceWithoutConstructor();
//$class_name->doSomething();
$instance->doSomething();
Basically here we are calling the static method on an instance of the class.
Solution 3 - Php
Use call_user_func. Also read up on PHP callbacks.
call_user_func(array($class_name, 'doSomething'), $arguments);
Solution 4 - Php
After I have almost missed the simplest solution from VolkerK, I have decided to extend and put it in a post. This is how to call the static members on the instance class
// calling class static method
$className = get_class($this);
$result = $className::caluclate($arg1, $arg2);
// using class static member
foreach ($className::$fields as $field) {
:
}
Solution 5 - Php
Reflection (PHP 5 supports it) is how you'd do this. Read that page and you should be able to figure out how to invoke the function like that.
$func = new ReflectionFunction('somefunction');
$func->invoke();
Solution 6 - Php
These answers are all outdated:
<?php
class MyTest{
public static function bippo(){
echo "hello";
}
}
$a = MyTest::class;
$a::bippo();
works fine
Solution 7 - Php
if you need to adjust the namespace
$call = call_user_func(array('\\App\\Models\\'.$class_name, "doSomething"));