Call to undefined function Symfony\Polyfill\Mbstring\iconv_strlen()

Question

My project works fine on localhost but not working online and this is the error:

Fatal error: Call to undefined function Symfony\Polyfill\Mbstring\iconv_strlen() in /home/stram/public_html/vendor/symfony/polyfill-mbstring/Mbstring.php on line 338

I googled it and I found that I need to install the PHP extension iconv. The problem that I'm using a VPS and when I went to the list of available PHP extensions I didn't found this extension !

Thnx in advance.

Answer 1

Symfony provides an iconv-polyfill for cases like that. Just add it as requirement to your project, and you should be fine:

composer require symfony/polyfill-iconv

Answer 2

It may also happen that you are using an outdated version of PHP, or one that was compiled without iconv.

To check that, run php --ri iconv with any SSH software, like Putty, etc.

If it shows Extension 'iconv' not present., your problem is in PHP. Then you have a few options:

• Run php -v to check your PHP version, and update it if necessary
• Or compile PHP again with iconv
• Or enable iconv on WHM/cPanel, if you use them
• Or ask your hosting company for support

Answer 3

Here is a solution to your problem (command line is for CentOS) :