Text-encoding HTML-ENTITIES will be deprecated as of PHP 8.2.
To convert all non-ASCII characters into entities (to produce pure 7-bit HTML output), I was using:
<?php
echo mb_convert_encoding( htmlspecialchars( $text, ENT_QUOTES, 'UTF-8' ), 'HTML-ENTITIES', 'UTF-8' );
?>
I can get the identical result with:
<?php
echo mb_encode_numericentity( htmlentities( $text, ENT_QUOTES, 'UTF-8' ), [0x80, 0x10FFFF, 0, ~0], 'UTF-8' );
?>
The output contains well-known named entities for some often used characters and numeric entities for the rest.
