下面代码,下载下来的问题为什么大小只有0字节?
if( $attachment['attachment'] )
{
$file = 'uploads/resource/'.$attachment['attachment'];
if( file_exists( dirname($file) ) )
{
$fileName = basename( $file );
header("Content-type: application/force-download");
header("Content-type: application/octet-stream");
header("Accept-Ranges: bytes");
header("Accept-Length: ".filesize( $file ));
header("Content-Disposition: attachment; filename=" . $fileName);
readfile( $file );
}
}
回复讨论(解决方案)
确认 $attachment['attachment'] 有值,且文件存在。
确认 $attachment['attachment'] 有值,且文件存在。
确定、肯定、以及一定,我在本地测试的。就吧知道为什么。。。
header('Content-length: '.filesize($file));
header('Content-length: '.filesize($file));
还是0字节。。。。。郁闷。。
程序没执行到第二个 if 。。。
if( file_exists( dirname($file) ) )
你判断的是目录是否存在,而不是文件是否存在,因此如果文件确实不存在,下载的内容就可能是空
if( file_exists( dirname($file) ) )
你判断的是目录是否存在,而不是文件是否存在,因此如果文件确实不存在,下载的内容就可能是空
如果改为:if( file_exists( $file) ),也不行。。。。
没有进入第二个if, 说明的你 uploads/resource/ 目录不存在,当然文件也不存在。
没有进入第二个if, 说明的你 uploads/resource/ 目录不存在,当然文件也不存在。
$file_dir = '/webfolder/hz/uploads/resource/';
$file_name = $attachment['attachment'];
$file = $file_dir . $file_name;
这样提示文件没找到,但是我直接打到浏览器又可以,比如$file='123.docx';
127.0.0.1/webfolder/hz/uploads/resource/123.docx 这样下载下来是没问题的。
我的PHP文件和保存文件的文件夹都在hz文件夹里。。
$file_dir = '/webfolder/hz/uploads/resource/';
这个是系统的根目录,不是网站的根目录,你两个概念搞混了
$file_dir = '/webfolder/hz/uploads/resource/';
这个是系统的根目录,不是网站的根目录,你两个概念搞混了
$file_dir = 'd:/cede/webfolder/hz/uploads/resource/'; 这样也不行呢
引用 10 楼 snmr_com 的回复:$file_dir = '/webfolder/hz/uploads/resource/';
这个是系统的根目录,不是网站的根目录,你两个概念搞混了
$file_dir = 'd:/cede/webfolder/hz/uploads/resource/'; 这样也不行呢
各种路径都试过了,就是吧不行,大侠们,求救!!!!!!!!!!!!!!!!
$file_dir = '/webfolder/hz/uploads/resource/';
$file_name = $attachment['attachment'];
$file = $file_dir . $file_name;
这样提示文件没找到,但是我直接打到浏览器又可以,比如$file='123.docx';
127.0.0.1/webfolder/hz/uploads/resource/123.docx 这样下载下来是没问题的。
echo $file;//试试看
$file_dir = '/webfolder/hz/uploads/resource/';
$file_name = $attachment['attachment'];
$file = $file_dir . $file_name;
这样提示文件没找到,但是我直接打到浏览器又可以,比如$file='123.docx';
127.0.0.1/webfolder/……
echo $file得到/webfolder/hz/uploads/resource/123.docx
127.0.0.1/webfolder/hz/uploads/resource/123.docx 这样下载下来是没问题的。
那么你的程序在哪里?(echo __FILE__; 看一下)
127.0.0.1/webfolder/hz/uploads/resource/123.docx 这样下载下来是没问题的。
那么你的程序在哪里?(echo __FILE__; 看一下)
echo __FILE__;得到D:\Code\webfolder\hz\public_attach_down.php,路径正确
程序
D:\Code\webfolder\hz\public_attach_down.php
也就是说文档为
D:/Code/webfolder/hz/uploads/resource/123.docx
其中 D:/Code 为网站的根
你先
$file = 'D:/Code/webfolder/hz/uploads/resource/123.docx';if( file_exists( $file ) ) { $fileName = basename( $file ); header("Content-type: application/force-download"); header("Content-type: application/octet-stream"); header("Accept-Ranges: bytes"); header("Accept-Length: ".filesize( $file )); header("Content-Disposition: attachment; filename=" . $fileName); readfile( $file );}测试一下
程序
D:\Code\webfolder\hz\public_attach_down.php
也就是说文档为
D:/Code/webfolder/hz/uploads/resource/123.docx
其中 D:/Code 为网站的根
你先PHP code?12345678910$file = 'D:/Code/webfolder/hz/uploads/re……
不行,没执行if里面的程序,难道是在iframe里不行?
干嘛是框架?
你单独写个文件测试一下不就可以了吗
干嘛是框架?
你单独写个文件测试一下不就可以了吗
单独文件也不行。。。
那就是你提供的路径信息不对!
你最好截个图
那就是你提供的路径信息不对!
你最好截个图
这是站点路径
D:/Code/ htdocs_33594_v6/hz/uploads/resource/123.docx
你怎么总是说是 webfolder 呢?
D:/Code/htdocs_33594_v6/hz/uploads/resource/123.docx
你怎么总是说是 webfolder 呢?
红色部分只是个例子,代码中我是写htdocs_33594_v6这个的
引用 23 楼 xuzuning 的回复:D:/Code/htdocs_33594_v6/hz/uploads/resource/123.docx
你怎么总是说是 webfolder 呢?
红色部分只是个例子,代码中我是写htdocs_33594_v6这个的
$file = 'D:/Code/htdocs_33594_v6/uploads/public/20130420071624_1761_上传_案.docx';
if( file_exists( $file ) ) {
$fileName = basename( $file );
header("Content-type: application/force-download");
header("Content-type: application/octet-stream");
header("Accept-Ranges: bytes");
header("Accept-Length: ".filesize( $file ));
header("Content-Disposition: attachment; filename=" . $fileName);
readfile( $file );
}
这样在单独文件可以下载并正常,但是在iframe里就不行了,怪哉!!!!!
解决问题的过程是最有趣的。
解决问题的过程是最有趣的。
这个趣味也太折腾人了。。
撒打算打算的
撒打算打算的
header("Content-Transfer-Encoding: binary");

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl

TomakePHPapplicationsfaster,followthesesteps:1)UseOpcodeCachinglikeOPcachetostoreprecompiledscriptbytecode.2)MinimizeDatabaseQueriesbyusingquerycachingandefficientindexing.3)LeveragePHP7 Featuresforbettercodeefficiency.4)ImplementCachingStrategiessuc

ToimprovePHPapplicationspeed,followthesesteps:1)EnableopcodecachingwithAPCutoreducescriptexecutiontime.2)ImplementdatabasequerycachingusingPDOtominimizedatabasehits.3)UseHTTP/2tomultiplexrequestsandreduceconnectionoverhead.4)Limitsessionusagebyclosin

Dependency injection (DI) significantly improves the testability of PHP code by explicitly transitive dependencies. 1) DI decoupling classes and specific implementations make testing and maintenance more flexible. 2) Among the three types, the constructor injects explicit expression dependencies to keep the state consistent. 3) Use DI containers to manage complex dependencies to improve code quality and development efficiency.

DatabasequeryoptimizationinPHPinvolvesseveralstrategiestoenhanceperformance.1)Selectonlynecessarycolumnstoreducedatatransfer.2)Useindexingtospeedupdataretrieval.3)Implementquerycachingtostoreresultsoffrequentqueries.4)Utilizepreparedstatementsforeffi


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

Dreamweaver Mac version
Visual web development tools

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

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

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.

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
