2021-09-18.1

• Use a different copy of the html syntax with different rule names to avoid misbehaviors when php_htmlInStrings == 2 was set and string literals contain <?php. (setting php_htmlInStrings to 3 or any other value can be used to use the official html syntax highlighting when that is not a concern)
• Add highlighting for never type, enum keyword from php 8.1
• Highlight octal string literals using the new 0o prefix
• Properly highlight <?= when php_noShortTags is set
• Add special highlighting for __serialize and __unserialize from PHP 7.4

2020-12-22.1

• Highlight more php 8.0 functions and class/interface names
• Highlight <=> as a single comparison operator
• Highlight the php 8.0 mixed type as a native type
• Don't highlight $offset as a syntax error in $var[$offset]

2020-09-07.3

• Remove prefixes of constants such as E_COMPILE_ that were unintentionally highlighted

2020-09-07.2

• Update the Last Change date comment

2020-09-07.1

• Highlight php 8.0 #[ attributes differently from # comments - see https://wiki.php.net/rfc/shorter_attribute_syntax_change
• Highlight php 8.0 match keyword https://wiki.php.net/rfc/match_expression_v2
• Highlight php 8.0 ?-> nullsafe operator https://wiki.php.net/rfc/nullsafe_operator
• Add missing builtin classes/interfaces/constants/functions for highlighting (in color schemes that highlight them differently)

2020-05-11.2

• Highlight but don't fold fn() with php_folding=1 - it has no } to fold to

2020-05-11.1

• Fix common reason for incorrectly highlighting errors in floats
• Support php 7.4 numeric _ separator for _ - https://wiki.php.net/rfc/numeric_literal_separator#restrictions
• Syntax highlight fn for php short arrow functions (fn()=>)