class MyTestClass{const TESTVAR1 = 1001;const TESTVAR2 = 1002;const TESTSTR1 = "hello";}$rc = new ReflectionClass("MyTestClass");$v = $rc->getConstants(); asort($v);// sort by value//ksort($v);// sort by keyforeach ( $v as $name => $value){echo "$name => $value
";}运行结果如下:TESTSTR1 => helloTESTVAR1 => 1001TESTVAR2 => 1002希望本文所述对大家的php程序设计有所帮助。