search
HomeBackend DevelopmentPHP TutorialHow to use iconv function in php_php skills_PHP tutorial

How to use iconv function in php_php skills_PHP tutorial

Jul 13, 2016 pm 05:45 PM
iconvmodulephpunixDownInstructionsfunctionInstallSkillofcompileneed

To install the PHP module under unix, you need to recompile PHP. To install the template under Windows, you only need to open the corresponding dll according to the configuration in php.ini. For example, if you need to add support for the gb library, you need the following settings:
extension_dir = "C:/ipaddr/php/extensions/"
(Note, it is recommended to write the full address and add / after it. In many cases, the dll of other modules cannot be loaded because the settings here are incorrect)
Open it again
extension=php_gd2.dll
But if iconv.dll is installed, follow the above method and after opening php_iconv.dll, the iconv module still cannot be opened. The following configuration is required:
a. Go to the official download site of iconv
http://ftp.gnu.org/pub/gnu/libiconv/
The Windows version of the iconv file below: libiconv-1.9.1.bin.woe32.zip
Unzip this file and copy charset.dll, iconv.dll, and iconv.exe under bin/ to c:/windows/ (or other system PATH)
(ipaddr reminds you that this step is necessary. php_iconv.dll also calls the GNU iconv library, so you must first install the GNU iconv library)

b. Open php_iconv.dll in php.ini

c. Restart Apache, and then check whether iconv is enabled in phpinfo();.
Recently I was working on a program that needed to use the iconv function to convert the captured utf-8 encoded pages into gb2312. I found that only by using the iconv function to transcode the captured data, the data would be less for no reason. I was depressed for a while. After checking the information on the Internet, I found out that this was a bug in the iconv function. iconv will make an error when converting the character "—" to gb2312
The solution is very simple, just add "//IGNORE" after the encoding that needs to be converted, which is the second parameter of the iconv function. As follows:
The following is the quoted content:
iconv("UTF-8","GB2312//IGNORE",$data)
Ignore means to ignore errors during conversion. Without the ignore parameter, all strings following this character cannot be saved.

This iconv() function is built-in in php5. Thank you.

Lie Zi

echo $str= 'Hello, we sell coffee here!';
echo '
';

echo iconv('GB2312', 'UTF-8', $str); //Convert the string encoding from GB2312 to UTF-8
echo '
';

echo iconv_substr($str, 1, 1, 'UTF-8'); //Truncate by the number of characters instead of bytes                                             print_r(iconv_get_encoding()); //Get the current page encoding information

echo iconv_strlen($str, 'UTF-8'); //Get the string length of the set encoding


//This is also used

$content = iconv("UTF-8","gbk//TRANSLIT",$content); ?>


http://www.bkjia.com/PHPjc/478686.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/478686.htmlTechArticleTo install the PHP module under unix, you need to recompile PHP. To install the template under Windows, just change the php.ini Just open the corresponding dll according to the configuration. For example, if you need to add gb library support, you need the following...
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
How to make PHP applications fasterHow to make PHP applications fasterMay 12, 2025 am 12:12 AM

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

PHP Performance Optimization Checklist: Improve Speed NowPHP Performance Optimization Checklist: Improve Speed NowMay 12, 2025 am 12:07 AM

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

PHP Dependency Injection: Improve Code TestabilityPHP Dependency Injection: Improve Code TestabilityMay 12, 2025 am 12:03 AM

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.

PHP Performance Optimization: Database Query OptimizationPHP Performance Optimization: Database Query OptimizationMay 12, 2025 am 12:02 AM

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

Simple Guide: Sending Email with PHP ScriptSimple Guide: Sending Email with PHP ScriptMay 12, 2025 am 12:02 AM

PHPisusedforsendingemailsduetoitsbuilt-inmail()functionandsupportivelibrarieslikePHPMailerandSwiftMailer.1)Usethemail()functionforbasicemails,butithaslimitations.2)EmployPHPMailerforadvancedfeatureslikeHTMLemailsandattachments.3)Improvedeliverability

PHP Performance: Identifying and Fixing BottlenecksPHP Performance: Identifying and Fixing BottlenecksMay 11, 2025 am 12:13 AM

PHP 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 summaryDependency Injection for PHP: a quick summaryMay 11, 2025 am 12:09 AM

DependencyInjection(DI)inPHPisadesignpatternthatmanagesandreducesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itallowspassingdependencieslikedatabaseconnectionstoclassesasparameters,facilitatingeasiertestingandscalability.

Increase PHP Performance: Caching Strategies & TechniquesIncrease PHP Performance: Caching Strategies & TechniquesMay 11, 2025 am 12:08 AM

CachingimprovesPHPperformancebystoringresultsofcomputationsorqueriesforquickretrieval,reducingserverloadandenhancingresponsetimes.Effectivestrategiesinclude:1)Opcodecaching,whichstorescompiledPHPscriptsinmemorytoskipcompilation;2)DatacachingusingMemc

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

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

mPDF

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),

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment