Backend DevelopmentPHP TutorialPHP implements an example of encapsulating a single file and uploading it to the databasePHP implements an example of encapsulating a single file and uploading it to the database
This article mainly introduces the relevant information of PHP encapsulating a single file to be uploaded to the database (path). Friends in need can refer to it
1. First think about the question of uploading to the database whether it is an uploaded picture or a picture Address: What we upload here is the image address. Because the image or audio is too large to be stored in the database, the database will collapse.
The following is the method for uploading encapsulated files:
<?php
/*
*@prame string key
*@prame string path
*@prame String maxSize
*@prame array allowMime
*@prame array allowFiletype
*@prame bool true
*
*auther wulei
*/
function upload($key,$path,$maxSize,$allowMime,$allowType,$ifFileName = true){
//第一步 判断错误码
if($_FILES[$key]['error']){
switch($_FILES[$key]['error']){
case 1:
$str = "上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值。";
break;
case 2:
$str = "上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值。";
break;
case 3:
$str = "文件只有部分被上传。";
break;
case 4:
$str = "没有文件被上传。";
break;
case 6:
$str = "找不到临时文件夹。";
break;
case 7:
$str = "文件写入失败";
break;
}
return [0,$str];
}
//判断文件大小
if($_FILES[$key]['size']>$maxSize){
return [0,'传的文件超过最大限制'];
}
//判断文件的mime类型
if(!in_array($_FILES[$key]['type'],$allowMime)){
return [0,'不符合的mime类型'];
}
//判断文件的后缀
$info = pathinfo($_FILES[$key]['name']);
$sub = $info['extension'];
if(!in_array($sub,$allowType)){
return [0,'不符合的文件后缀'];
}
//判断是否是随机文件
if($ifFileName){
$name = uniqid().'.'.$sub;
}else{
$name = $info;
}
//拼接路径
$path = rtrim($path,'/').'/'.date('Y/m/d').'/';
//判断文件是否存在,不存在则创建
if(!file_exists($path)){
mkdir($path,0777,true);
}
//判断是否是上传文件
if(is_uploaded_file($_FILES[$key]['tmp_name'])){
if(move_uploaded_file($_FILES[$key]['tmp_name'],$path.$name)){
echo '文件上传成功';
return [1,$path.$name];
}else{
return[0,'上传文件失败'];
}
}else{
return [0,'文件不存在'];
}
}2.html page
<html>
<head>
<title>文件上传</title>
<meta charset = "utf-8"/>
</head>
<body>
<form action = "onUpload.php" method = "post" enctype ="multipart/form-data">
<!--<input type = "text" name = "username"/><br/>-->
<input type = "file" name = "file"/><br/>
<input type = "submit" value ="提交"/>
</form>
</body>3. Next we link to the database
Here we use it directly. If you don’t understand, you can read the previous article on the encapsulated database method. Article
<?php
//包含方法
include 'uploed.php';
include 'common.php';
//得到方法
$data = upload('file','image',pow(1024,2)*2,[
'image/png','image/jpeg','image/gif','image/wbmp'
],['png','jpg','jpeg','jpe','pjpeg','gif','wbmp','bmp']);
//这里进行数据库操作
if($data[0]){
$date['img_path'] = $data[1];
}
insert($link,'user',$date);Summary
The above is the detailed content of PHP implements an example of encapsulating a single file and uploading it to the database. For more information, please follow other related articles on the PHP Chinese website!
How to make PHP applications fasterMay 12, 2025 am 12:12 AMTomakePHPapplicationsfaster,followthesesteps:1)UseOpcodeCachinglikeOPcachetostoreprecompiledscriptbytecode.2)MinimizeDatabaseQueriesbyusingquerycachingandefficientindexing.3)LeveragePHP7 Featuresforbettercodeefficiency.4)ImplementCachingStrategiessuc
PHP Performance Optimization Checklist: Improve Speed NowMay 12, 2025 am 12:07 AMToimprovePHPapplicationspeed,followthesesteps:1)EnableopcodecachingwithAPCutoreducescriptexecutiontime.2)ImplementdatabasequerycachingusingPDOtominimizedatabasehits.3)UseHTTP/2tomultiplexrequestsandreduceconnectionoverhead.4)Limitsessionusagebyclosin
PHP Dependency Injection: Improve Code TestabilityMay 12, 2025 am 12:03 AMDependency 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.
PHP Performance Optimization: Database Query OptimizationMay 12, 2025 am 12:02 AMDatabasequeryoptimizationinPHPinvolvesseveralstrategiestoenhanceperformance.1)Selectonlynecessarycolumnstoreducedatatransfer.2)Useindexingtospeedupdataretrieval.3)Implementquerycachingtostoreresultsoffrequentqueries.4)Utilizepreparedstatementsforeffi
Simple Guide: Sending Email with PHP ScriptMay 12, 2025 am 12:02 AMPHPisusedforsendingemailsduetoitsbuilt-inmail()functionandsupportivelibrarieslikePHPMailerandSwiftMailer.1)Usethemail()functionforbasicemails,butithaslimitations.2)EmployPHPMailerforadvancedfeatureslikeHTMLemailsandattachments.3)Improvedeliverability
PHP Performance: Identifying and Fixing BottlenecksMay 11, 2025 am 12:13 AMPHP performance bottlenecks can be solved through the following steps: 1) Use Xdebug or Blackfire for performance analysis to find out the problem; 2) Optimize database queries and use caches, such as APCu; 3) Use efficient functions such as array_filter to optimize array operations; 4) Configure OPcache for bytecode cache; 5) Optimize the front-end, such as reducing HTTP requests and optimizing pictures; 6) Continuously monitor and optimize performance. Through these methods, the performance of PHP applications can be significantly improved.
Dependency Injection for PHP: a quick summaryMay 11, 2025 am 12:09 AMDependencyInjection(DI)inPHPisadesignpatternthatmanagesandreducesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itallowspassingdependencieslikedatabaseconnectionstoclassesasparameters,facilitatingeasiertestingandscalability.
Increase PHP Performance: Caching Strategies & TechniquesMay 11, 2025 am 12:08 AMCachingimprovesPHPperformancebystoringresultsofcomputationsorqueriesforquickretrieval,reducingserverloadandenhancingresponsetimes.Effectivestrategiesinclude:1)Opcodecaching,whichstorescompiledPHPscriptsinmemorytoskipcompilation;2)DatacachingusingMemc
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
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.
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.
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.
SublimeText3 Linux new version
SublimeText3 Linux latest version
