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

Substitution

Processing...

Code Generator

Language

Generated Code

$re = '/,(?![^(]*\\\\)/'; $str = 'select distinct \\n(\'<a href=ORG_S.htm?keyno=\'+rtrim(ent.entid)+\' target=_blank id=\\"\'+rtrim(ent.mdsstring)+\'\\" name=\\"\'+rtrim(ent.entid)+\'\\" class=\\"vieworgglobal\\">\'+rtrim(ent.custno)+\' - \'+rtrim(ent.company)+\'</a>\') as customer, ent.phone, 0 as curr,\\n\\n(select SUM(billmast.balance) as balance from billmast where billmast.billid = ent.entid and ent.cid = \'abis\' and billmast.balance<>0 and billmast.invdate>dateadd(day,-60, getdate()) and billmast.invdate<dateadd(day,-30, getdate())\\n) as first,\\n\\n(select SUM(billmast.balance) as balance from billmast where billmast.billid = ent.entid and ent.cid = \'abis\' and billmast.balance<>0 and billmast.invdate>dateadd(day,-90, getdate()) and billmast.invdate<dateadd(day,-60, getdate())\\n) as second,\\n\\n(select SUM(billmast.balance) as balance from billmast where billmast.billid = ent.entid and ent.cid = \'abis\' and billmast.balance<>0 and billmast.invdate>dateadd(day,-120, getdate()) and billmast.invdate<dateadd(day,-90, getdate())\\n) as third,\\n\\n(select SUM(billmast.balance) as balance from billmast where billmast.billid = ent.entid and ent.cid = \'abis\' and billmast.balance<>0 and billmast.adddate<dateadd(day,-120, getdate())\\n) as fourth, \\n\\n(select SUM(billmast.balance) as balance from billmast where billmast.billid = ent.entid and ent.cid = \'abis\' and billmast.balance<>0 and billmast.invdate<dateadd(day,-30, getdate())) as total, \'1691\' as link\\n\\nfrom billmast,ent where billmast.billid = ent.entid and ent.cid = \'abis\' and billmast.balance<>0 and billmast.invdate<dateadd(day,-30, getdate()) order by customer'; $subst = ";"; $result = preg_replace($re, $subst, $str); echo "The result of the substitution is ".$result;

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