Home

PHP Libraries

Other libraries

PHP class library that merges two tables into one new table

Other libraries

Get it now

PHP class library that merges two tables into one new table

<?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.

Disclaimer

All resources on this site are contributed by netizens or reprinted by major download sites. Please check the integrity of the software yourself! All resources on this site are for learning reference only. Please do not use them for commercial purposes. Otherwise, you will be responsible for all consequences! If there is any infringement, please contact us to delete it. Contact information: admin@php.cn

How to enable Pico.css on demand in a project without polluting styles globally

09 Feb 2026

Pico.css has provided the pico.conditional.min.css version since v2, which only takes effect on elements with class="pico" added, completely solving the problem of style conflicts with other UI libraries.

What is the difference between mysql full database recovery and single database recovery_mysql operation method instructions

09 Feb 2026

Full database recovery is to directly import the SQL file generated by mysqldump--all-databases, covering all libraries (including system libraries). The risk is high, but it is suitable for the entire instance crash; you must check the CREATEDATABASE statement, target library list and character set, SQL mode, permission library synchronization and other details.

How to secure your MySQL server? (Security Hardening Checklist)

26 Feb 2026

MySQL security hardening requires disabling anonymous users and test libraries, restricting root remote login and creating dedicated management accounts, forcing TLS encryption, closing local_infile and other dangerous functions, and regularly checking key security variables.

How to use the filter_var function for validation in PHP?

09 Nov 2025

The filter_var() function is used to verify and clean data. It supports email, integer, URL, IP and other format verification. It is implemented through built-in filters such as FILTER_VALIDATE_EMAIL without the need for external libraries.

How to correctly load JARs with embedded dependencies (such as 'fat JARs') in Java applications

10 Feb 2026

This article explains in detail why the "fat JAR" containing the libs/ directory cannot be directly loaded as a normal dependency, and the standardized practice plan for safely introducing external libraries in SpringBoot, Tomcat and other environments.

Best way to keep unparsed JSON fields in Go

01 Jan 2026

This article discusses how to decode some fields into a structure while retaining other fields not defined in the structure when using the encoding/json package to process JSON data in the Go language. We will introduce methods using the json.RawMessage type and custom Unmarshaler/Marshaler interfaces, and briefly mention solutions from other libraries to help developers flexibly handle dynamic JSON data.