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Community Library Entry
1
Regular Expression
PCRE (PHP <7.3)
/
^
(?!
\\
.
)
(?!
com
[
0
-
9
]
$
)
(?!
con
$
)
(?!
lpt
[
0
-
9
]
$
)
(?!
nul
$
)
(?!
prn
$
)
[^
\\
|
\\
*
\?\\
:<>
\/
$"
]
*
[^
\\
.
\\
|
\\
*
\\
?
\\\:
<>
\/
$"
]
+
$
/
Open regex in editor
Description
filename.txt
Not: .filename.txt
Submitted by
RAussi
-
9 years ago