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(PHP 5 >= 5.4.6)
ReflectionParameter::isDefaultValueConstant — Returns whether the default value of this parameter is constant
本函数还未编写文档,仅有参数列表。
此函数没有参数。
Returns TRUE
if the default value is constant, FALSE
if it is not or
NULL
on failure.
[#1] kristianoye at gmail dot com [2015-05-25 21:39:59]
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.