<?php //定义一个三维数组 $grade=array('class1'=>array('stu1'=>array('yuwen'=>85,'shuxue'=>95,'yingyu'=>96), 'stu2'=>array('yuwen'=>76,'shuxue'=>89,'yingyu'=>99), 'stu3'=>array('yuwen'=>75,'shuxue'=>99,'yingyu'=>100)), 'class2'=>array('stu1'=>array('yuwen'=>99,'shuxue'=>100,'yingyu'=>100)), 'class3'=>array(array(80,90,99))); //访问数组中的元素 echo '该年级1班的stu1学生的yuwen成绩为:'.$grade['class1']['stu1']['yuwen']; echo '<br />该年级1班的stu3学生的yingyu成绩为:'.$grade['class1']['stu3']['yingyu']; echo '<br />该年级2班的stu1学生的shuxue成绩为:'.$grade['class2']['stu1']['shuxue']; echo '<br />该年级3班的学生0的成绩1为:'.$grade['class3'][0][1]; ?>