ReflectionClass
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ReflectionClass::getConstants

(PHP 5)

ReflectionClass::getConstants — Gets constants

说明

public array ReflectionClass::getConstants ( void )

Gets defined constants from a class.

Warning

本函数还未编写文档，仅有参数列表。

参数

此函数没有参数。

返回值

An array of constants. Constant name in key, constant value in value.

参见

ReflectionClass
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PHP手册
PHP手册 - N: Gets constants

用户评论:

djhob1972 at yahoo dot com dot au (16-Dec-2009 01:42)

I was trying to determine how to get a var_dump of constants that are within an interface.  Thats right, not using any classes but the interface itself.

Along my travels I found it quite interesting that the ReflectionClass along with a direct call to the interface will also dump its constants.  Perfect!!!!

This was using PHP 5.3.1 and my example as below:-

1st File:

constants.php

<?php
<?php>

interface MyConstants
{
    // --------------------------
    // Programmatic Level
    // --------------------------
    const DEBUG_MODE_ACTIVE       = FALSE;
    const PHP_VERSION_REQUIREMENT = "5.1.2";
}
?>

=======
Second file:
=======

test.php

<?php>
include_once ("constants.php");

$oClass = new ReflectionClass ('MyConstants');
$array = $oClass->getConstants ();
var_dump ($array);
unset ($oClass);
?>

what you would get from the command line:-

?:\???\htdocs\????>php test.php
array(2) {
  ["DEBUG_MODE_ACTIVE"]=> bool(false)
  ["PHP_VERSION_REQUIREMENT"]=> string(5) "5.1.2"

But as you can see this can work quite well to your advantage in many ways so I truely hope this helps someone else with a similar headache in the future to come!

Enjoy!