{"id":16785,"date":"2024-03-15T13:37:21","date_gmt":"2024-03-15T13:37:21","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-iconv-in-php\/"},"modified":"2025-08-07T05:52:09","modified_gmt":"2025-08-07T05:52:09","slug":"what-is-the-usage-of-iconv-in-php","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-iconv-in-php\/","title":{"rendered":"What is the usage of iconv in PHP?"},"content":{"rendered":"

In PHP, the function iconv() is used for converting between character sets. Its basic usage is as follows:<\/p>\n

Convert the string from one character encoding to another.<\/p>\n

Explanation of parameters:<\/p>\n

    \n
  1. $in_charset: Character set of the input string.<\/li>\n
  2. $out_charset: character set of the output string.<\/li>\n
  3. $str: The string to be converted.<\/li>\n<\/ol>\n

    Return value:
    \nReturn the transformed string.<\/p>\n

    \u4f8b\u5b50\uff1a\u4f8b\u5982<\/p>\n

    $str<\/span> = \"\u4f60\u597d\uff0c\u4e16\u754c\uff01\"<\/span>;\r\n$convertedStr<\/span> = iconv<\/span>(\"UTF-8\"<\/span>, \"GBK\"<\/span>, $str<\/span>);\r\necho<\/span> $convertedStr<\/span>; \/\/ \u8f93\u51fa\uff1a\u6d63\u72b2\u30bd\u951b\u581f\u579c\u9365\ufffd<\/span>\r\n\r\n$convertedStr2<\/span> = iconv<\/span>(\"GBK\"<\/span>, \"UTF-8\"<\/span>, $convertedStr<\/span>);\r\necho<\/span> $convertedStr2<\/span>; \/\/ \u8f93\u51fa\uff1a\u4f60\u597d\uff0c\u4e16\u754c\uff01<\/span>\r\n<\/code><\/pre>\n
    In the examples above, the UTF-8 encoded string is first converted to a GBK encoded string, and then the converted string is converted back to UTF-8 encoding.<\/p>\n
    Important points to note:<\/p>\n
      \n
    1. When dealing with character set conversions, errors may occur in the iconv() function, which can be ignored by setting the error_reporting() function.<\/li>\n
    2. If there are characters that cannot be converted during the conversion process, the iconv() function will by default replace those characters with a question mark (?). Setting the fourth parameter of the iconv() function allows for specifying a different way to replace these characters.<\/li>\n<\/ol>\n
      For further information on how to use and the parameters of the iconv() function, please refer to the official PHP documentation.<\/p>\n","protected":false},"excerpt":{"rendered":"
      In PHP, the function iconv() is used for converting between character sets. Its basic usage is as follows: Convert the string from one character encoding to another. Explanation of parameters: $in_charset: Character set of the input string. $out_charset: character set of the output string. $str: The string to be converted. Return value: Return the transformed […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[453,1402,299,1404,1403],"class_list":["post-16785","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-development","tag-guide","tag-programming","tag-technology","tag-tutorial"],"yoast_head":"\nWhat is the usage of iconv in PHP? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn about what is the usage of iconv in php?. 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