ReflectionParameter::isDefaultValueConstant()
(PHP 5 >= 5.4.6, PHP 7)
Returns whether the default value of this parameter is a constant
说明
public ReflectionParameter::isDefaultValueConstant(void) : bool
Returns whether the default value of this parameter is a constant.
参数
此函数没有参数。
返回值
ReturnsTRUE
if the default value is constant,andFALSE
otherwise.
参见
- ReflectionParameter::getDefaultValueConstantName() Returns the default value's constant name if default value is constant or null
- ReflectionParameter::isDefaultValueAvailable() 检查是否有默认值。
This method returns true only if the parameter's default value is set to a named constant. e.g. class Foo { const OPTION_MULTIGET = 1; //Method 1 public function setGetOptions($opts=0); //Method 2 public function setMultiGetOptions($opts=Foo::OPTION_MULTIGET); } Method 1's first ReflectionParameter will return isDefaultValueConstant() = false (0 is a "constant"/static value but not a named constant) and Method 2's will return isDefaultValueConsntant() = true.