Checks that a variable is null.
<pre> {{ var is none }} </pre>
@package twig @author Fabien Potencier <fabien@symfony.com>
Expanded class hierarchy of Twig_Node_Expression_Test_Null
class Twig_Node_Expression_Test_Null extends Twig_Node_Expression_Test {
public function compile(Twig_Compiler $compiler) {
$compiler
->raw('(null === ')
->subcompile($this
->getNode('node'))
->raw(')');
}
}
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
Twig_Node:: |
protected | property | ||
Twig_Node:: |
protected | property | ||
Twig_Node:: |
protected | property | ||
Twig_Node:: |
protected | property | ||
Twig_Node:: |
public | function | ||
Twig_Node:: |
public | function | Gets an attribute. | |
Twig_Node:: |
public | function | ||
Twig_Node:: |
public | function |
Overrides Twig_NodeInterface:: |
|
Twig_Node:: |
public | function | Gets a node by name. | |
Twig_Node:: |
public | function |
Overrides Twig_NodeInterface:: |
|
Twig_Node:: |
public | function | Returns true if the attribute is defined. | |
Twig_Node:: |
public | function | Returns true if the node with the given identifier exists. | |
Twig_Node:: |
public | function | Removes an attribute. | |
Twig_Node:: |
public | function | Removes a node by name. | |
Twig_Node:: |
public | function | Sets an attribute. | |
Twig_Node:: |
public | function | Sets a node. | |
Twig_Node:: |
public | function | ||
Twig_Node:: |
public | function | ||
Twig_Node_Expression_Test:: |
public | function |
Constructor. Overrides Twig_Node:: |
1 |
Twig_Node_Expression_Test_Null:: |
public | function |
Compiles the node to PHP. Overrides Twig_Node_Expression_Test:: |