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

/
/
g

Test String

Code Generator

Language

Generated Code

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(\()?(\+36|0036|06)?(\))?(-| )?(1|20|2[2-9]|3[0-7]|40|42|4[4-9]|5[2-7]|59|60|62|63|66|68|69|70|7[2-9]|80|8[2-5]|8[7-9]]|90|9[2-9])([\\\/ ])?(\d{6,7}|\d{3}(-| )\d{3,4}|\d{3,4}(-| )\d{3})`) var str = `205032935 305032935 705032935 06303335554 +36205032935 0036205032935 (06)-30\3333333 (06)-30\3333-333 (06)-303333333 (+36)303333333 (+36)-30\333 3333 (+36)-30/3333333 (0036)-30\333-3333 (0036)-30\3333 333 (0036) 303333333 0036 74 555 556 +3674 555556 0674555 556 (06)74555556 (0036)-74/555-556 ` for i, match := range re.FindAllString(str, -1) { fmt.Println(match, "found at index", i) } }

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 Golang, please visit: https://golang.org/pkg/regexp/