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

/
/
gm

Test String

Code Generator

Language

Generated Code

$re = '/\+?1?[\ \-\.]?\(?\d+\)?([\ \-\.]?\d+)+(\ ?[xX]\d+)?/m'; $str = '333-555-1075 333.555.1075 (333)555.1075 (333)555-1075 (333)555-1075 x4141 (333) 555-1075 (333) 555-1075 x4141 1 (333) 555-1075 1 (333) 555-1075 x4141 1-333-555-1075 1-333-555-1075 X4141 1.800.591.5911 1.800.591.5911 x41 1.800.591.5911X414166 1.800.591.5911 X4141 +1555789123 +4974339296 +591 74339296 +1 555 555 5554 +1 555 555 5554 x4141 +(591) 7433433 +(591) (4) 6434850 <--fail 0591 74339296 0001 5555555555 (0001) 5555555 59145678464 645-65-7315 <-- also matches social security number 754-3010 Local (541) 754-3010 Domestic +1-541-754-3010 International 1-541-754-3010 Dialed in the US 001-541-754-3010 Dialed from Germany 191 541 754 3010 Dialed from France 636-48018 Local (Germany telephone) (089) / 636-48018 Domestic <-- fails (matches with leading space) 089/636-48018 Domestic <-- fails +49-89-636-48018 International 19-49-89-636-48018 Dialed from France'; preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0); // Print the entire match result var_dump($matches);

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 PHP, please visit: http://php.net/manual/en/ref.pcre.php