<div>
This should match any letters but a, b, or c<br />
(^-?[d-zD-Z]*$)
</div>


This should match any letters but a, b, or c
(^-?[d-zD-Z]*$)

<div>
Thank you, Pui_Yun, I'd not yet discovered that you can use NOT patterns (negative assertions) in PCRE.<br />
<br />
<a href="http://php.net/manual/en/regexp.reference.assertions.php" rel="ugc">http://php.net/manual/en/regexp.reference.assertions.php</a><br />
<br />
That will come in handy, no doubt.
</div>


Thank you, Pui_Yun, I'd not yet discovered that you can use NOT patterns (negative assertions) in PCRE.

http://php.net/manual/en/regexp.reference.assertions.php [http://php.net/manual/en/regexp.reference.assertions.php]

That will come in handy, no doubt.

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No problem, I hope it comes in handy :)<br />
<br />
P.
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No problem, I hope it comes in handy :)

P.

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<div class="content wysiwyg-content">
I understand that a regex written like:<br />
<br />
[^abc] <br />
<br />
means any character except a, b or c can appear once.<br />
<br />
But how would I write the regex to equal any character except abc &quot;as a group&quot; and not individual letters.<br />
<br />
I've already tried:<br />
<br />
([^a][^b][^c]) &nbsp;didn't work.<br />
([^abc]) &nbsp; &nbsp; &nbsp; &nbsp;didn't work.<br />
<br />
can someone please assist?<br />
thx<br />
D-
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</div>


I understand that a regex written like:

[^abc] 

means any character except a, b or c can appear once.

But how would I write the regex to equal any character except abc "as a group" and not individual letters.

I've already tried:

([^a][^b][^c])  didn't work.
([^abc])        didn't work.

can someone please assist?
thx
D-

Php regex [^abc] as group not individual letters

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.