php数组合并示例代码
欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 分享一个php数组合并的实例代码,学习下php中实现数组合并的方法,有需要的朋友做个参考。 最近做一个报表,要求若某几项相同就合并这几行,并将数字项相加显示。 首先,考虑遍历数组,拿出数组的最
欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入
分享一个php数组合并的实例代码,学习下php中实现数组合并的方法,有需要的朋友做个参考。
最近做一个报表,要求若某几项相同就合并这几行,并将数字项相加显示。
首先,考虑遍历数组,拿出数组的最后一项跟其它项比较,若符合条件则做合并操作并删除该项。
但是实际运行,发现执行3次后就不执行了,而这时的数组长度是6.一直没搞懂为什么不继续执行了。
数组是采用&引用删除的,删除项确影响到了原数组的。
既然删除会影响遍历,那就不删除,而是将该项的值设置为空。
问题就解决了,最后用array_filter过滤下空值即可。
php数组合并代码:
代码示例:
//合并itemsearch的结果
private function mergeList(&$arr)
{
$data = array();
$n = &$arr;
foreach ($n as $key => $value) {
if(!$value) continue;
array_push($data,$this->getItem($value,$n));
}
return array_filter($data);
}
private function getItem(&$item,&$arr){
foreach ($arr as $key => $value) {
if(!$value) {
continue;
};
if($item["itemTypeName"] == $value["itemTypeName"]
&& $item["weight"] == $value["weight"]
&& $item["type"] == $value["type"]){
if($item["itemTypeId"] == $value["itemTypeId"]
&& $item["warehouseId"] == $value["warehouseId"]){
continue;
}else{
$item["stockIn"] += $value["stockIn"];
$item["remain"] += $value["remain"];
$item["stockOut"] += $value["stockOut"];
$item["stockIn"] = sprintf("%.4f",$item["stockIn"]);
$item["remain"] = sprintf("%.4f",$item["remain"]);
$item["stockOut"] = sprintf("%.4f",$item["stockOut"]);
$arr[$key] = "";
}
}
}
return $item;
}

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

The key differences between CentOS and Ubuntu are: origin (CentOS originates from Red Hat, for enterprises; Ubuntu originates from Debian, for individuals), package management (CentOS uses yum, focusing on stability; Ubuntu uses apt, for high update frequency), support cycle (CentOS provides 10 years of support, Ubuntu provides 5 years of LTS support), community support (CentOS focuses on stability, Ubuntu provides a wide range of tutorials and documents), uses (CentOS is biased towards servers, Ubuntu is suitable for servers and desktops), other differences include installation simplicity (CentOS is thin)

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

CentOS installation steps: Download the ISO image and burn bootable media; boot and select the installation source; select the language and keyboard layout; configure the network; partition the hard disk; set the system clock; create the root user; select the software package; start the installation; restart and boot from the hard disk after the installation is completed.

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

Docker uses Linux kernel features to provide an efficient and isolated application running environment. Its working principle is as follows: 1. The mirror is used as a read-only template, which contains everything you need to run the application; 2. The Union File System (UnionFS) stacks multiple file systems, only storing the differences, saving space and speeding up; 3. The daemon manages the mirrors and containers, and the client uses them for interaction; 4. Namespaces and cgroups implement container isolation and resource limitations; 5. Multiple network modes support container interconnection. Only by understanding these core concepts can you better utilize Docker.

CentOS has been discontinued, alternatives include: 1. Rocky Linux (best compatibility); 2. AlmaLinux (compatible with CentOS); 3. Ubuntu Server (configuration required); 4. Red Hat Enterprise Linux (commercial version, paid license); 5. Oracle Linux (compatible with CentOS and RHEL). When migrating, considerations are: compatibility, availability, support, cost, and community support.

How to use Docker Desktop? Docker Desktop is a tool for running Docker containers on local machines. The steps to use include: 1. Install Docker Desktop; 2. Start Docker Desktop; 3. Create Docker image (using Dockerfile); 4. Build Docker image (using docker build); 5. Run Docker container (using docker run).
