Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

r"
"

Test String

Code Generator

Language

Generated Code

re = /^(?P<country>\+?54)?\s?(?:(?P<mobile>9)?\s?(?P<areacode>11|220|221|223|230|236|237|249|260|261|263|264|266|280|291|294|297|298|299|336|341|342|343|345|348|351|353|358|362|364|370|376|379|380|381|383|385|387|388|2202|2221|2223|2224|2225|2226|2227|2229|2241|2242|2243|2244|2245|2246|2252|2254|2255|2257|2261|2262|2264|2265|2266|2267|2268|2271|2272|2273|2274|2281|2283|2284|2285|2286|2291|2292|2296|2297|2302|2314|2316|2317|2320|2323|2324|2325|2326|2331|2333|2334|2335|2336|2337|2338|2342|2343|2344|2345|2346|2352|2353|2354|2355|2356|2357|2358|2392|2393|2394|2395|2396|2473|2474|2475|2477|2478|2622|2624|2625|2626|2646|2647|2648|2651|2652|2655|2656|2657|2658|2901|2902|2903|2920|2921|2922|2923|2924|2925|2926|2927|2928|2929|2931|2932|2933|2934|2935|2936|2940|2942|2945|2946|2948|2952|2953|2954|2962|2963|2964|2966|2972|2982|2983|3327|3329|3382|3385|3387|3388|3400|3401|3402|3404|3405|3406|3407|3408|3409|3435|3436|3437|3438|3442|3444|3445|3446|3447|3454|3455|3456|3458|3460|3462|3463|3464|3465|3466|3467|3468|3469|3471|3472|3476|3482|3483|3487|3489|3491|3492|3493|3496|3497|3498|3521|3522|3524|3525|3532|3533|3537|3541|3542|3543|3544|3546|3547|3548|3549|3562|3563|3564|3571|3572|3573|3574|3575|3576|3582|3583|3584|3585|3711|3715|3716|3718|3721|3725|3731|3734|3735|3741|3743|3751|3754|3755|3756|3757|3758|3772|3773|3774|3775|3777|3781|3782|3786|3821|3825|3826|3827|3832|3835|3837|3838|3841|3843|3844|3845|3846|3854|3855|3856|3857|3858|3861|3862|3863|3865|3867|3868|3869|3873|3876|3877|3878|3885|3886|3887|3888|3891|3892|3894)|(?P<mobileprefix>15))?\s?(?P<number>[\d\-\.]+)$/ str = '+54 9 11 46392313' # Print the match result str.match(re) do |match| puts match.to_s end

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 Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html