search
HomeBackend DevelopmentPHP Tutorial 怎的快速找出两个数组中相同的元素

怎样快速找出两个数组中相同的元素?
例如我有两个数组 
1、('csdn','php','asp','msdn','c#','java','jsp','vb')
2、('javajia','asp','java','source','c#','delphi','jsp','vc++')

快速找出两个数组中相同的元素,要快速,不能一个个遍历,因为有几千个元素呢。
如上两个数组,得出结果是('asp','java','c#','jsp')

100分敬上!先谢了!!



------解决方案--------------------

你试试用正则表达式!

如还有其他需要请留言!
------解决方案--------------------

PHP code


$a=array('csdn','php','asp','msdn','c#','java','jsp','vb');
$b=array('javajia','asp','java','source','c#','delphi','jsp','vc++');

print_r(array_intersect($a,$b));
<br><font color="#e78608">------解决方案--------------------</font><br>楼上正解!
<br><font color="#e78608">------解决方案--------------------</font><br>求两个数组的交集<br>
PHP code

$a=array('csdn','php','asp','msdn','c#','java','jsp','vb');
$b=array('javajia','asp','java','source','c#','delphi','jsp','vc++');
print_r(array_intersect($a,$b));
<br><font color="#e78608">------解决方案--------------------</font><br>
探讨

PHP code

$a=array('csdn','php','asp','msdn','c#','java','jsp','vb');
$b=array('javajia','asp','java','source','c#','delphi','jsp','vc++');

print_r(array_intersect($a,$b));


------解决方案--------------------
探讨

PHP code


$a=array('csdn','php','asp','msdn','c#','java','jsp','vb');
$b=array('javajia','asp','java','source','c#','delphi','jsp','vc++');

print_r(array_intersect($a,$b));



//效率不知道怎么样

------解决方案--------------------
计算两数组的交集
------解决方案--------------------
仅需要取相同的值时,可以用array_intersect()如果连键名也需要比较时用array_intersect_assoc()
------解决方案--------------------
就是用这个函数,系统函数比自定义的效率要高很多

探讨

PHP code


$a=array('csdn','php','asp','msdn','c#','java','jsp','vb');
$b=array('javajia','asp','java','source','c#','delphi','jsp','vc++');

print_r(array_intersect($a,$b));



//效率不知道怎么样

------解决方案--------------------
1楼正解
------解决方案--------------------
我想来捞分的 没想到3楼太犀利。。。 正解
如果是C++ 我还有更犀利的方法 嘿嘿
------解决方案--------------------
3楼正解啊~~ 同样学习一下
------解决方案--------------------
3楼给力,学习了。
------解决方案--------------------
我也来默写一遍:array_intersect()


哈哈,记住了。。。。
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 Email: Step-by-Step Sending GuidePHP Email: Step-by-Step Sending GuideMay 09, 2025 am 12:14 AM

PHPisusedforsendingemailsduetoitsintegrationwithservermailservicesandexternalSMTPproviders,automatingnotificationsandmarketingcampaigns.1)SetupyourPHPenvironmentwithawebserverandPHP,ensuringthemailfunctionisenabled.2)UseabasicscriptwithPHP'smailfunct

How to Send Email via PHP: Examples & CodeHow to Send Email via PHP: Examples & CodeMay 09, 2025 am 12:13 AM

The best way to send emails is to use the PHPMailer library. 1) Using the mail() function is simple but unreliable, which may cause emails to enter spam or cannot be delivered. 2) PHPMailer provides better control and reliability, and supports HTML mail, attachments and SMTP authentication. 3) Make sure SMTP settings are configured correctly and encryption (such as STARTTLS or SSL/TLS) is used to enhance security. 4) For large amounts of emails, consider using a mail queue system to optimize performance.

Advanced PHP Email: Custom Headers & FeaturesAdvanced PHP Email: Custom Headers & FeaturesMay 09, 2025 am 12:13 AM

CustomheadersandadvancedfeaturesinPHPemailenhancefunctionalityandreliability.1)Customheadersaddmetadatafortrackingandcategorization.2)HTMLemailsallowformattingandinteractivity.3)AttachmentscanbesentusinglibrarieslikePHPMailer.4)SMTPauthenticationimpr

Guide to Sending Emails with PHP & SMTPGuide to Sending Emails with PHP & SMTPMay 09, 2025 am 12:06 AM

Sending mail using PHP and SMTP can be achieved through the PHPMailer library. 1) Install and configure PHPMailer, 2) Set SMTP server details, 3) Define the email content, 4) Send emails and handle errors. Use this method to ensure the reliability and security of emails.

What is the best way to send an email using PHP?What is the best way to send an email using PHP?May 08, 2025 am 12:21 AM

ThebestapproachforsendingemailsinPHPisusingthePHPMailerlibraryduetoitsreliability,featurerichness,andeaseofuse.PHPMailersupportsSMTP,providesdetailederrorhandling,allowssendingHTMLandplaintextemails,supportsattachments,andenhancessecurity.Foroptimalu

Best Practices for Dependency Injection in PHPBest Practices for Dependency Injection in PHPMay 08, 2025 am 12:21 AM

The reason for using Dependency Injection (DI) is that it promotes loose coupling, testability, and maintainability of the code. 1) Use constructor to inject dependencies, 2) Avoid using service locators, 3) Use dependency injection containers to manage dependencies, 4) Improve testability through injecting dependencies, 5) Avoid over-injection dependencies, 6) Consider the impact of DI on performance.

PHP performance tuning tips and tricksPHP performance tuning tips and tricksMay 08, 2025 am 12:20 AM

PHPperformancetuningiscrucialbecauseitenhancesspeedandefficiency,whicharevitalforwebapplications.1)CachingwithAPCureducesdatabaseloadandimprovesresponsetimes.2)Optimizingdatabasequeriesbyselectingnecessarycolumnsandusingindexingspeedsupdataretrieval.

PHP Email Security: Best Practices for Sending EmailsPHP Email Security: Best Practices for Sending EmailsMay 08, 2025 am 12:16 AM

ThebestpracticesforsendingemailssecurelyinPHPinclude:1)UsingsecureconfigurationswithSMTPandSTARTTLSencryption,2)Validatingandsanitizinginputstopreventinjectionattacks,3)EncryptingsensitivedatawithinemailsusingOpenSSL,4)Properlyhandlingemailheaderstoa

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 Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version