<code> /** * @function getSplitCache 对excelId基础数据进行分片缓存 * @param type $excelId excel文件id tax_excel的id * @param type $beforeAndAfterInsertid details_excel 插入前后的id * @return 无 统一excel的缓存文件标准为: EXCEL_ID_NUM */ public function getSplitCache($excelId, $beforeAndAfterInsertid){ processTip( '100%', 'Excel数据分片开始.....................'); $where['id'] = array('gt', $beforeAndAfterInsertid['beforeId']); $where['excel_id'] = array('eq', $excelId); //是否可能存在两个表同时插入情况,如果无可省略此项 $allExcelData = $this->modelDetailsExcel->where($where)->group('nsrsbh,id')->select(); $totalNum = count($allExcelData); $this->_setAllRow($totalNum); // $interval = ceil( ($beforeAndAfterInsertid[1]-$beforeAndAfterInsertid[0])/$this->excelDataCacheNum);//多个人同时出现操作插入文件是可能错误 $interval = ceil($totalNum/$this->excelDataCacheNum); for($i = 0; $iexcelDataCacheNum; $i++ ){ $excelData[$i] = array_slice($allExcelData, $i*$interval, $interval); } unset($allExcelData); //1一个在开头一个在结尾利用时间差可以不再细分 //2必须分在一起以下为分在一起的 $i = 0; for($i; $iexcelDataCacheNum-1; $i++ ){ if($excelData[$i][$interval-1]['nsrsbh'] === $excelData[$i+1][0]['nsrsbh']){ $j = 0; while( $excelData[$i][$interval-1]['nsrsbh'] === $excelData[$i+1][$j]['nsrsbh']){ $excelData[$i][] = $excelData[$i+1][$j++]; P($j); } array_splice($excelData[$i+1], 0, $j); } //输出前台展示进度 processTip( ($i/$this->excelDataCacheNum*100), 'Excel数据分片'.$i.'.....................'); //Thinkphp的F缓存方法 指定位置和名称 F('Excel_'.$excelId.'/'.$i , $excelData[$i]); } F('Excel_'.$excelId.'/'. $i , $excelData[$i]); processTip( '100%', 'Excel数据分片结束.....................'); return $this->excelDataCacheNum; } </code>
基本原理是 将数据库数据按照nsrsbh 和 id排序 读取出来,然后将数据按照分片数据 分割指定数目的文件(用于前台ajax请求,模拟多线程操作,js发送请求后端接收后处理传过来的数据分片的文件name,然后处理改文件内的数据)
系统环境 apche php 分配的memoryliimit win(win10 64bit 4G内存)为2g linux(ubuntu14.04 64位 8g内存)为4g
经过测试当数据量在3500条时分片1000正常执行。
当数据量在11770条时,linux下和win下开始出现这个问题
到978片缓存生成时就进行不下去,php程序自动跳出 效果如下 然后进程就退出了。
当分片为500的时候出现到488 就会卡 然后到了过个2分钟左右才会输出489 然后没有然后了 进程跳出了
回复内容:
<code> /** * @function getSplitCache 对excelId基础数据进行分片缓存 * @param type $excelId excel文件id tax_excel的id * @param type $beforeAndAfterInsertid details_excel 插入前后的id * @return 无 统一excel的缓存文件标准为: EXCEL_ID_NUM */ public function getSplitCache($excelId, $beforeAndAfterInsertid){ processTip( '100%', 'Excel数据分片开始.....................'); $where['id'] = array('gt', $beforeAndAfterInsertid['beforeId']); $where['excel_id'] = array('eq', $excelId); //是否可能存在两个表同时插入情况,如果无可省略此项 $allExcelData = $this->modelDetailsExcel->where($where)->group('nsrsbh,id')->select(); $totalNum = count($allExcelData); $this->_setAllRow($totalNum); // $interval = ceil( ($beforeAndAfterInsertid[1]-$beforeAndAfterInsertid[0])/$this->excelDataCacheNum);//多个人同时出现操作插入文件是可能错误 $interval = ceil($totalNum/$this->excelDataCacheNum); for($i = 0; $iexcelDataCacheNum; $i++ ){ $excelData[$i] = array_slice($allExcelData, $i*$interval, $interval); } unset($allExcelData); //1一个在开头一个在结尾利用时间差可以不再细分 //2必须分在一起以下为分在一起的 $i = 0; for($i; $iexcelDataCacheNum-1; $i++ ){ if($excelData[$i][$interval-1]['nsrsbh'] === $excelData[$i+1][0]['nsrsbh']){ $j = 0; while( $excelData[$i][$interval-1]['nsrsbh'] === $excelData[$i+1][$j]['nsrsbh']){ $excelData[$i][] = $excelData[$i+1][$j++]; P($j); } array_splice($excelData[$i+1], 0, $j); } //输出前台展示进度 processTip( ($i/$this->excelDataCacheNum*100), 'Excel数据分片'.$i.'.....................'); //Thinkphp的F缓存方法 指定位置和名称 F('Excel_'.$excelId.'/'.$i , $excelData[$i]); } F('Excel_'.$excelId.'/'. $i , $excelData[$i]); processTip( '100%', 'Excel数据分片结束.....................'); return $this->excelDataCacheNum; } </code>
基本原理是 将数据库数据按照nsrsbh 和 id排序 读取出来,然后将数据按照分片数据 分割指定数目的文件(用于前台ajax请求,模拟多线程操作,js发送请求后端接收后处理传过来的数据分片的文件name,然后处理改文件内的数据)
系统环境 apche php 分配的memoryliimit win(win10 64bit 4G内存)为2g linux(ubuntu14.04 64位 8g内存)为4g
经过测试当数据量在3500条时分片1000正常执行。
当数据量在11770条时,linux下和win下开始出现这个问题
到978片缓存生成时就进行不下去,php程序自动跳出 效果如下 然后进程就退出了。
当分片为500的时候出现到488 就会卡 然后到了过个2分钟左右才会输出489 然后没有然后了 进程跳出了
你去php.ini
文件中看看有没有配置最大变量长度的那个设置项,找到它,修改后服务器重启即可。
我以前恰好遇到过这个问题
-
打开 error_reporting
可在脚本最上方添加<code>php</code><code>error_reporing(E_ALL); ini_set('display_errors'); </code>
监控数据量多的情况下,是不是内存使用超出限制
如果确认是内存溢出
改造你的程序,降低内存使用
比如使用generator
具体根据你的业务,尽量不要取太多数据放入内存
保证你程序运行的时候不要随着处理数据量的增大而内存也跟着增大
理想的情况是处理数据量的增长不会导致程序运行内存的暴增
set_time_limit(0),设置超时时间,不是内存的问题可能是超时了

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

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

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

Dreamweaver Mac version
Visual web development tools