Online Regex Tester (Perl, PHP, JavaScript)
globalmodifier or its absence respectively. The Perl and PHP scripts are full Unicode capable.Take care: if you are on Windows and hit the line break server-side (Perl, PHP), then you will get two matches because \n on Windows is \r\n on Linux!
Examples of successful matches and error messages as displayed by the form
/[A-Z]/
PHP:
All work and no play makes Jack a dull boy.
Perl:
All work and no play makes Jack a dull boy.
JavaScript:
All work and no play makes Jack a dull boy.
/[a-h]/g
PHP:
preg_replace(): Unknown modifier 'g'
Perl:
That’s one small step for man, onegiant leap for mankind.
JavaScript:
That’s one small step for man, onegiant leap for mankind.
/(?<=\s)[a-z]/
PHP:
To be, or not to be, that is the question:
Perl:
To be, or not to be, that is the question:
JavaScript:
SyntaxError: invalid regexp group
/[a-z]{6,7}(?=\s)/PHP:
It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife.
Perl:
It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife.
JavaScript:
It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife.
/\w(\w*/
PHP:
preg_replace(): Compilation failed: missing ) at offset 6
Perl:
Unmatched ( in regex; marked by <-- HERE in m/(?)\w( <-- HERE \w*/ at /var/www/xxxxxxx/ingram-braun.net/httpdocs/perl/regex.pl line 39.
JavaScript:
SyntaxError: unterminated parenthetical
9 Responses
- Pingback: online perl regex - loginfinance.com
Useful! I would note that your use of the term “greedy modifier” is technically incorrect; the /g modifier is the GLOBAL modifier, telling the regex to match as many times as possible. Greediness in regex terms refers to how long a continuous match result continues. (+ and * are inherently greedy unless qualified using a question mark.)
Hi, I am having an implementation in Javascript maybe it will be implemented in many languages later. I want to know is there a way to check if the regex in JSON is in Perl or not. And can I convert any Perl regex into ECMA regex?
I am not deep enough into regular expressions to provide you with a definite answer here. I have never seen a PCRE2ECMA conversion tool. For a long time, ECMA had less features than PCRE. Don’t know how it is today.