search
HomeBackend DevelopmentPHP Tutorial趁着人少…解决办法

趁着人少……
散分啰!!!!!!!!!!
50楼或者明年1月2日结贴

循例发个没用的东西,不然管理员转到非技术区就浪费分了

检查jpeg是否有错误,需要GD

<br /><?php<br />try<br />{<br />    if ([email&#160;protected]($argv[1])) throw new Exception($error);<br />    else echo 'true';<br />} catch (Exception $e) {<br />    echo 'false';<br />}<br />?><br />

这个比python的PIL还好用,PIL有些查不出,也没有py3.3可用的pygd,令我很郁闷
建议结合jpeg的文件头和文件尾可以省点CPU资源



今年好倒霉,被骗了很多钱,希望来年好些……

祝大家新年好!!


------解决方案--------------------
感觉 getimagesize 更好些(不需 GD 支持)
------解决方案--------------------
说真的没这样用过!分数这么高!顶一下!
------解决方案--------------------

------解决方案--------------------
jf
学习   
新年快乐

响应lz  让此贴成为技术贴  问个问题
ob_get_status() returns status information on either the top level output buffer or all active output buffer levels if full_status is set to TRUE. 

ob_get_status
可以返回一个数组  表示这个buffer的状态
比如
(
    [level] => 1
    [type] => 1
    [status] => 0
    [name] => default output handler
    [del] => 1
)
里面有个level  这个是表示什么的
有什么用呀.
万能的LZ
------解决方案--------------------
其实我就是来接分的,多谢楼主
------解决方案--------------------

------解决方案--------------------
引用:
感觉 getimagesize 更好些(不需 GD 支持)


imagecreatefromjpeg 虽然是GD库,不过好像安装完PHP后,是默认打开的。
和 getimagesize 相比,哪个更占内存和CPU?
------解决方案--------------------
多谢!!!
------解决方案--------------------
引用:
引用:感觉 getimagesize 更好些(不需 GD 支持)

用size不能查出图片中间交错的jpg,就是那些打开图片会看到中间有横线的那种
看需求吧,如果单纯检查上传下载有没有断,用头尾字节基本能确认95%了
我是写来查自己硬盘上的坏图……




学习了。。。
------解决方案--------------------
等分ing
------解决方案--------------------
祝福楼主,等分
------解决方案--------------------
真好,有分接
------解决方案--------------------

------解决方案--------------------
真不错楼主 ,顶下...
------解决方案--------------------

------解决方案--------------------
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
PHP Performance Tuning for High Traffic WebsitesPHP Performance Tuning for High Traffic WebsitesMay 14, 2025 am 12:13 AM

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

Dependency Injection in PHP: Code Examples for BeginnersDependency Injection in PHP: Code Examples for BeginnersMay 14, 2025 am 12:08 AM

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

PHP Performance: is it possible to optimize the application?PHP Performance: is it possible to optimize the application?May 14, 2025 am 12:04 AM

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

PHP Performance Optimization: The Ultimate GuidePHP Performance Optimization: The Ultimate GuideMay 14, 2025 am 12:02 AM

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

PHP Dependency Injection Container: A Quick StartPHP Dependency Injection Container: A Quick StartMay 13, 2025 am 12:11 AM

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

Dependency Injection vs. Service Locator in PHPDependency Injection vs. Service Locator in PHPMay 13, 2025 am 12:10 AM

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.

PHP performance optimization strategies.PHP performance optimization strategies.May 13, 2025 am 12:06 AM

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

PHP Email Validation: Ensuring Emails Are Sent CorrectlyPHP Email Validation: Ensuring Emails Are Sent CorrectlyMay 13, 2025 am 12:06 AM

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

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Article

Hot Tools

DVWA

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

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools