Deprecated: mb_convert_encoding(): Handling HTML entities via mbstring is deprecated; use htmlspecialchars, htmlentities
On PHP 8.2, I use Parsedown library to parse Markdown content to HTML. I started using ParsedownExtra library for the additional table parsing, and then got this error.
Deprecated: mb_convert_encoding(): Handling HTML entities via mbstring is deprecated; use htmlspecialchars, htmlentities, or mb_encode_numericentity/mb_decode_numericentity instead in /PATH-TO/ParsedownExtra.php on line 628
What is this deprecation about?
The mb_convert_encoding() function is used to convert strings between UTF-8 and other encodings. It is prone to errors and is not as efficient as htmlentities() and htmlspecialchars() in converting betwen two character encoding of strings.
In our working solution, we will replace that function with htmlspecialchars_decode()andhtmlentities()`.
Solution
The solution is pretty straightforward.
Line 628 in ParsedownExtra.php contains this:
$elementMarkup = mb_convert_encoding($elementMarkup, 'HTML-ENTITIES', 'UTF-8');
Change that line to:
$elementMarkup = htmlspecialchars_decode(iconv('UTF-8', 'ISO-8859-1', htmlentities($elementMarkup, ENT_COMPAT, 'UTF-8')), ENT_QUOTES);
Save the file and refresh the webpage on which the deprecation error showed up. Upon refreshing, you should not see the error anymore.
Has this worked for you?
If this tutorial has worked for you, please let me know, and share this post. You can also contact me with any questions or post in the comments below.
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If you have any questions, please contact me at arulbOsutkNiqlzziyties@gNqmaizl.bkcom. You can also post questions in our Facebook group. Thank you.