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Bug #26703 highlight_string and similar highlights improper characters as a keyword
Submitted: 2003-12-23 03:36 UTC Modified: 2003-12-26 05:04 UTC
From: Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 4.3.4 OS: Any
Private report: No CVE-ID:
 [2003-12-23 03:36 UTC]
There are two issues with highlight_string, highlight_file and `php -s`:

1. Some characters (like []{}) are highlighted in non-constant strings (i.e. double quote strings with variables) as a keyword even on places where they don't have any special purpose.

2. Some characters ([]{} and backslash sequences) are highlighted in non-constant strings and aren't highlighted in constant strings. It should be consistent.

Suggested solution: Don't highlight anything as a keyword both in constant and non-constant strings.

I've already sent a patch for this to

Reproduce code:
highlight_string('<?php "foo[] $a \n"; ?>');

Expected result:
<code><font color="#000000">
<font color="#0000BB">&lt;?php </font><font color="#DD0000">"foo[] $a \n"</font><font color="#007700">; </font><font color="#0000BB">?&gt;</font>

Actual result:
<code><font color="#000000">
<font color="#0000BB">&lt;?php </font><font color="#DD0000">"foo</font><font color="#007700">[]</font><font color="#DD0000"> $a </font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">; </font><font color="#0000BB">?&gt;</font>


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 [2003-12-23 04:12 UTC]
Please do not submit the same bug more than once. An existing
bug report already describes this very problem. Even if you feel
that your issue is somewhat different, the resolution is likely
to be the same. 

Thank you for your interest in PHP.

You already reported a bug about this before.
 [2003-12-25 04:39 UTC]
This is different. In #26629, I complain about not highlighting some characters in constant strings. As you told me that it will be hard to implement, I sent this bug report complaining about highlighting those characters in non-constant strings (so it is opposite). Besides there's another issue with this (marked as 1.).

Can you please read whole bug report and take a look on sent patch? There are two reasons to accept it and no reason to reject it.
 [2003-12-25 04:47 UTC]
It's all the same issue, get over it.
 [2003-12-25 04:55 UTC]
There are two issues with the highlighting. I described them quite precisely. It can not be expected behavior as it behave strange (1) and inconsistent (2). The fix is easy and I already sent a patch for it. Why don't you accept the patch and marking this bug bogus again and again?
 [2003-12-25 13:54 UTC]
This bug has been fixed in CVS.

In case this was a PHP problem, snapshots of the sources are packaged
every three hours; this change will be in the next snapshot. You can
grab the snapshot at
In case this was a documentation problem, the fix will show up soon at

In case this was a website problem, the change will show
up on the site and on the mirror sites in short time.
Thank you for the report, and for helping us make PHP better.

 [2003-12-26 05:04 UTC]
Happy end :-). Thanks a lot, Ilia.
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