<code><?php header('Content-Type: text/plain;charset=utf-8');
$arr = array
(
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => '学雷锋做好事',
'cname' => '社会活动模块',
'period' => '16',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => '会计从业资格证',
'cname' => '科技创新模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-1',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => '教师资格证',
'cname' => '科技创新模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530111',
'stu_name' => '雷雨',
'stu_major' => '13视传1班',
'depart_name' => '设计学院',
'project_name' => '美术学',
'cname' => '文体艺术模块',
'period' => '15',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530108',
'stu_name' => '周励',
'stu_major' => '13产设1班',
'depart_name' => '设计学院',
'project_name' => 'DOM编程艺术',
'cname' => '科技创新模块',
'period' => '0',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530116',
'stu_name' => '高颜',
'stu_major' => '13陶艺2班',
'depart_name' => '陶美学院',
'project_name' => '音乐',
'cname' => '文体艺术模块',
'period' => '0',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530110',
'stu_name' => '程风',
'stu_major' => '13信管1班',
'depart_name' => '信息学院',
'project_name' => 'JavaScript高级程序设计',
'cname' => '思想道德模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530112',
'stu_name' => '苏环',
'stu_major' => '13公事1班',
'depart_name' => '人文学院',
'project_name' => '音乐',
'cname' => '文体艺术模块',
'period' => '0',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => '美术学',
'cname' => '文体艺术模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-1',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => 'DOM编程艺术',
'cname' => '科技创新模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-1',
'stu_id' => '201210530108',
'stu_name' => '周励',
'stu_major' => '13产设1班',
'depart_name' => '设计学院',
'project_name' => '美术学',
'cname' => '文体艺术模块',
'period' => '12',
'credit' => '0'
),
);
$tmp = array();
foreach($arr as $v) {
if(!isset($tmp[$v['stu_id']])){
$tmp[$v['stu_id']] = $v;
}else {
$tmp[$v['stu_id']]['period'] += $v['period'];
}
}
echo "<pre class="brush:php;toolbar:false">";
// 二维数组
print_r(array_values($tmp));
?>
$arr是一个二维数组，数组里有相同的stu_id（学生学号），根据stu_id（学生学号）的period（学时），计算总的period（学时），我的实现方案是这样的。
<code> $tmp = array();
foreach($arr as $v) {
if(!isset($tmp[$v['stu_id']])){
$tmp[$v['stu_id']] = $v;
}else {
$tmp[$v['stu_id']]['period'] += $v['period'];
}
}
echo "<pre class="brush:php;toolbar:false">";
// 二维数组
print_r(array_values($tmp));
但是，这只是实现了period（学时）相加。
我还需要加限制条件计算出数组和每个学生的总学分（credit），就是根据cname（模块名称），某个学生的每个模块（共四个模块，分别是思想道德模块、科技创新模块、文体艺术模块、社会活动模块）都需要大于等于16（四个模块同时都满足大于等于16），则这个学生的总学分为6.否则为0。
不知道怎么实现，特请教各位大神，在此先谢谢各位解答了。
回复内容：
<code><?php header('Content-Type: text/plain;charset=utf-8');
$arr = array
(
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => '学雷锋做好事',
'cname' => '社会活动模块',
'period' => '16',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => '会计从业资格证',
'cname' => '科技创新模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-1',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => '教师资格证',
'cname' => '科技创新模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530111',
'stu_name' => '雷雨',
'stu_major' => '13视传1班',
'depart_name' => '设计学院',
'project_name' => '美术学',
'cname' => '文体艺术模块',
'period' => '15',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530108',
'stu_name' => '周励',
'stu_major' => '13产设1班',
'depart_name' => '设计学院',
'project_name' => 'DOM编程艺术',
'cname' => '科技创新模块',
'period' => '0',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530116',
'stu_name' => '高颜',
'stu_major' => '13陶艺2班',
'depart_name' => '陶美学院',
'project_name' => '音乐',
'cname' => '文体艺术模块',
'period' => '0',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530110',
'stu_name' => '程风',
'stu_major' => '13信管1班',
'depart_name' => '信息学院',
'project_name' => 'JavaScript高级程序设计',
'cname' => '思想道德模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530112',
'stu_name' => '苏环',
'stu_major' => '13公事1班',
'depart_name' => '人文学院',
'project_name' => '音乐',
'cname' => '文体艺术模块',
'period' => '0',
'credit' => '0'
),
array
(
'term' => '2015-2016-2',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => '美术学',
'cname' => '文体艺术模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-1',
'stu_id' => '201210530109',
'stu_name' => '罗成',
'stu_major' => '12热工1班',
'depart_name' => '材料学院',
'project_name' => 'DOM编程艺术',
'cname' => '科技创新模块',
'period' => '12',
'credit' => '0'
),
array
(
'term' => '2015-2016-1',
'stu_id' => '201210530108',
'stu_name' => '周励',
'stu_major' => '13产设1班',
'depart_name' => '设计学院',
'project_name' => '美术学',
'cname' => '文体艺术模块',
'period' => '12',
'credit' => '0'
),
);
$tmp = array();
foreach($arr as $v) {
if(!isset($tmp[$v['stu_id']])){
$tmp[$v['stu_id']] = $v;
}else {
$tmp[$v['stu_id']]['period'] += $v['period'];
}
}
echo "<pre class="brush:php;toolbar:false">";
// 二维数组
print_r(array_values($tmp));
?>
$arr是一个二维数组，数组里有相同的stu_id（学生学号），根据stu_id（学生学号）的period（学时），计算总的period（学时），我的实现方案是这样的。
<code> $tmp = array();
foreach($arr as $v) {
if(!isset($tmp[$v['stu_id']])){
$tmp[$v['stu_id']] = $v;
}else {
$tmp[$v['stu_id']]['period'] += $v['period'];
}
}
echo "<pre class="brush:php;toolbar:false">";
// 二维数组
print_r(array_values($tmp));
但是，这只是实现了period（学时）相加。
我还需要加限制条件计算出数组和每个学生的总学分（credit），就是根据cname（模块名称），某个学生的每个模块（共四个模块，分别是思想道德模块、科技创新模块、文体艺术模块、社会活动模块）都需要大于等于16（四个模块同时都满足大于等于16），则这个学生的总学分为6.否则为0。
不知道怎么实现，特请教各位大神，在此先谢谢各位解答了。
<code>$res = array();
foreach($arr as $key => $value){
if(!array_key_exists($value['stu_id'],$res)){
$res[$value['stu_id']][$value['cname']] = $value['period'];
}else{
if(array_key_exists($value['cname'],$res[$value['stu_id']])){
$res[$value['stu_id']][$value['cname']] +=$value['period'];
}else{
$res[$value['stu_id']][$value['cname']] = $value['period'];
}
}
}
$tmp = array();
foreach($arr as $v) {
if(!isset($tmp[$v['stu_id']])){
$tmp[$v['stu_id']] = $v;
}else {
$tmp[$v['stu_id']]['period'] += $v['period'];
}
}
$result = array();
foreach ($res as $key => $value) {
$result[$key]['total_period'] = array_sum($value);
foreach($value as $key1 => $value1){
if($value1 $value) {
$lastData[$key]['term'] = $value['term'];
$lastData[$key]['stu_id'] = $value['stu_id'];
$lastData[$key]['stu_name'] = $value['stu_name'];
$lastData[$key]["stu_major"] = $value['stu_major'];
$lastData[$key]["depart_name"] = $value['depart_name'];
}
foreach ($result as $key => $value) {
$lastData[$key]["total_period"] = $value['total_period'];
$lastData[$key]["total_credit"] = $value['total_credit'];
}
$theLastData = array_values($lastData);
echo "<pre class="brush:php;toolbar:false">";
print_r($theLastData);
exit;
你的数据怎么来的 是从数据库中读取的吗？ 如果是 那么你的这些问题直接查询就出来了， 不需要用php逻辑处理~ 如果不是 那么逐条把数据存到数据库中 再查询得到想要的结果
PHP: An Introduction to the Server-Side Scripting LanguageApr 16, 2025 am 12:18 AMPHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.
PHP and the Web: Exploring its Long-Term ImpactApr 16, 2025 am 12:17 AMPHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.
Why Use PHP? Advantages and Benefits ExplainedApr 16, 2025 am 12:16 AMThe core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.
Debunking the Myths: Is PHP Really a Dead Language?Apr 16, 2025 am 12:15 AMPHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.
The PHP vs. Python Debate: Which is Better?Apr 16, 2025 am 12:03 AMPHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.
PHP's Purpose: Building Dynamic WebsitesApr 15, 2025 am 12:18 AMPHP 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.
PHP: Handling Databases and Server-Side LogicApr 15, 2025 am 12:15 AMPHP 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.
How do you prevent SQL Injection in PHP? (Prepared statements, PDO)Apr 15, 2025 am 12:15 AMUsing preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.
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
Atom editor mac version download
The most popular open source editor
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function
Dreamweaver Mac version
Visual web development tools
Notepad++7.3.1
Easy-to-use and free code editor
