Regular Expressions 101

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  • PCRE (PHP <7.3)
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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

/
/
gm

Test String

Code Generator

Language

Generated Code

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(?m)^https:\/\/www\.own3d\.tv\/en\/product\/[a-zA-Z0-9-\/]*-series-[a-zA-Z0-9-\/]*\/?$`) var str = `select all english detail pages of overlay packages starting with: https://www.own3d.tv/en/product/ containing between various characters: -series- ------------------------------------------------------- https://www.own3d.tv/en/product/arcadepro-series-package/ https://www.own3d.tv/en/product/dj-series-package/ https://www.own3d.tv/en/ https://www.own3d.tv/en/product/8-pack-animated-reaper-twitch-emotes-sales-bundle/ https://www.own3d.tv/en/product/twitch-channel-points-ghost/ https://www.own3d.tv/de/produkt/nexus-series-package/ https://www.own3d.tv/pt-br/produto/nexus-series-package/` 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/