File "ValidVariableNameStandard.xml"
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<documentation title="Variable Names">
<standard>
<![CDATA[
Private member variable names should be prefixed with an underscore and public/protected variable names should not.
]]>
</standard>
<code_comparison>
<code title="Valid: Proper member variable names.">
<![CDATA[
class Foo
{
public $<em>publicVar</em>;
protected $<em>protectedVar</em>;
private $<em>_privateVar</em>;
}
]]>
</code>
<code title="Invalid: underscores used on public/protected variables and not used on private variables.">
<![CDATA[
class Foo
{
public $<em>_publicVar</em>;
protected $<em>_protectedVar</em>;
private $<em>privateVar</em>;
}
]]>
</code>
</code_comparison>
</documentation>