<?php
class union {
var $lista = array();
var $listb = array();
var $listc = array();
function getlenght($arr) { //获得表长度
return count($arr);
}
function getelement($arr, $n) { //获取表中第n个元素，返回
return $e = $arr[$n] ? $arr[$n] : '';
}
function listinsert($arr, $e) { //表末尾插入元素
$arr[] = $e;
return $arr;
}Table, also known as table, is a visual communication mode and a means of organizing data. People widely use various forms in communication, scientific research, and data analysis activities. Various forms often appear in printed media, handwritten records, computer software, architectural decoration, traffic signs, and many other places. The conventions and terminology used to exactly describe a table vary depending on the context. In addition, different tables are also very different in terms of type, structure, flexibility, notation, expression and use. In various books and technical articles, tables are usually placed in a floating area with numbers and titles to distinguish them from the main text of the article.
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