# If you'd like to omit non-matching lines from the result; add ';d' to the end of the expression.
sed -E 's/(?(DEFINE)
(?<next_open_tag>
[^<]*+
(?i: <++[^<?s][^<]*
| <++(?! \?php
| \?=
| script\s*language\s*=\s*([\'"]?)php\g{-1}\s*>
) [^<]*
)*+
(?i: <++(?: \?php
| \?=
| [^>]+
)
| \z
)
)
)
\A (?&next_open_tag) \K
|
[^'"`\/#<?]*+
(?: '(?:[^'\\]+|\\.)*+' [^\'"`\/#<?]*
| "(?:[^"\\]+|\\.)*+" [^\'"`\/#<?]*
| `(?:[^`\\]+|\\.)*+` [^\'"`\/#<?]*
| \/(?![\/*]) [^\'"`\/#<?]* # stop for \/\/ or \/*
| # if close tag ?>
\? (?: >(?&next_open_tag)[^\'"`\/#<?]* | )
| < (?: # heredoc or nowdoc
<<[\ \t]*([\'"]?)
([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)
\g{-2}[\ \t]*[\r\n]
(?-s:.*+[\r\n])*?
\g{-1}[\r\n;]
[^\'"`\/#<?]*
| (?i: \/script\s*>)
(?&next_open_tag)
[^\'"`\/#<?]*
| [^\'"`\/#<?]*
)
)*+
\K
(?: (?:\/\/|\#)(?:[^\n?]+|\?(?!>))*+ # single line comment \/\/ и #
| \/\*(?:[^*]+|\*(?!\/))*+\*\/ # multi line comment \/* *\/
)?
//xsg;t' <<< "<!-- *//* -->
<?php
$a = \"text */*\"; // comment
$b = 'text *//*'; # comment
//*
if ($a) {
echo $b;
}
/*/
if ($bar) {
echo $foo;
}
// */
?>
<!-- *//* -->
<script language = \"php\" >
# comment ?> Text <?php $a = '/*'; // comment
$b = @`ls ./* -al`;
# */
</script>
<!-- *//* -->
"
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for SED, please visit: https://www.gnu.org/software/sed/manual/html_node/The-_0022s_0022-Command.html