Before HTML came out, it was troublesome to upload multiple files in PHP. You needed to add multiple input file fields to the form. After the release of html5, we can use the html5 attribute multiple of the input file to upload multiple files. Friends who need it can refer to it
First of all, I will introduce to you the multiple attribute of the file in html5
Definition and Usage
The multiple attribute specifies that multiple values can be selected for the input field. If this attribute is used, the field can accept multiple values.
Example:
<form action="demo_form.asp" method="get"> Select images: <input type="file" name="img" multiple="multiple" /> <input type="submit" /> </form>
The input file in the above example can accept multiple file upload fields.
After understanding the multiple attribute of file in html5, let's start to explain how to use html5 to implement multiple file uploads.
Example code:
html:
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> </head> <body> <form action="my_parser.php" method="post" enctype="multipart/form-data"> <p><input name="upload[]" type="file" multiple="multiple" /></p> <input type="submit" value="Upload all files"> </form> </body> </html>
php code:
for($i=0; $i<count($_FILES['upload']['name']); $i++) { //Get the temp file path $tmpFilePath = $_FILES['upload']['tmp_name'][$i]; //Make sure we have a filepath if ($tmpFilePath != ""){ //Setup our new file path $newFilePath = "./uploadFiles/" . $_FILES['upload']['name'][$i]; //Upload the file into the temp dir if(move_uploaded_file($tmpFilePath, $newFilePath)) { //Handle other code here } } }
Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study. At the same time, I also hope that everyone will support the PHP Chinese website.
Related recommendations:
PHP long connection use case analysis
phpUse redis long connection What are the steps
phpDetailed explanation of application containerization and deployment
The above is the detailed content of How to use html5 to upload multiple files in php. For more information, please follow other related articles on the PHP Chinese website!

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

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

WebStorm Mac version
Useful JavaScript development tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

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

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