CODEWITHSUNDEEP
phpclass
jhylands
jhylands

Reputation: 1014

Access a static variable from a class stored in a variable

Given a class:

class SomeClass{
     static $information = 'useful information';
}

I a trying to access a static variable in a set of php classes. Each class has the $information static variable. If I access the static variable directly

echo SomeClass::$information;

The program outputs the information, however if I try to access it storing it in a variable I get a error that the '::' is unexpected.

$class = SomeClass;
echo $class::$information;

The reason for storing the class in a variable is so that I can have a function that can create an array of Users or an array of Projects for example.

Upvotes: 1

Views: 1110

Answers (3)

bubba
bubba

Reputation: 3847

class SomeClass {
  public static $information = 'useful information';

  public static function getInformation() {
    return self::$information;
  }
}

Then you can do the following:

# Static Access
echo SomeClass::$information;
echo SomeClass::getInformation();

# Static Access via Class Name in Variable
$someClass = 'SomeClass';
echo $someClass::$information;

## Instantiated access
$someClass = new SomeClass();
echo $someClass->$information;
echo $someClass->getInformation();

Upvotes: 1

Benten
Benten

Reputation: 1039

You can do this:

$class = SomeClass::class;
echo $class::$information;

::class gets the fully qualified name of a class as a string.

Upvotes: 1

izambl
izambl

Reputation: 659

You can't store a reference to class in a variable, it is useless.

Instead you can store the class name in a variable and call the static method or variable:

$class = 'SomeClass';
echo $class::$information;

Upvotes: 0

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