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

@"
"
gmi

Test String

Code Generator

Language

Generated Code

$re = '/\bfield\b\(.*\)\s*\n*\{[^\}]*\s+FieldClass = FlowField;[^\}]*\} /mi'; $str = 'table 9070 "Accounting Services Cue" { Caption = \'Accounting Services Cue\'; fields { field(1; "Primary Key"; Code[10]) { Caption = \'Primary Key\'; } field(2; "Requests to Approve"; Integer) { CalcFormula = Count ("Approval Entry" WHERE (Status = CONST (Open), "Approver ID" = CONST (\'USERID\'))); Caption = \'Requests to Approve\'; Editable = false; FieldClass = FlowField; } field(4; "Ongoing Sales Invoices"; Integer) { CalcFormula = Count ("Sales Header" WHERE ("Document Type" = FILTER (Invoice))); Caption = \'Ongoing Sales Invoices\'; FieldClass = FlowField; } field(5; "My Incoming Documents"; Integer) { CalcFormula = Count ("Incoming Document"); Caption = \'My Incoming Documents\'; FieldClass = FlowField; } field(20; "User ID Filter"; Code[50]) { Caption = \'User ID Filter\'; FieldClass = FlowFilter; } } keys { key(Key1; "Primary Key") { Clustered = true; } } fieldgroups { } } '; preg_match_all($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