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

r"
"
g

Test String

Code Generator

Language

Generated Code

$re = '/(RT\S+)|((GigabitEthernet|TenGigE|Serial|POS)[\d/]+\S+)\t(\S+)|(Bundle-Ether\d\d\t\S+)/'; $str = ' RTPESPO0305 Bundle-Ether60 REAL_TIME RTPESPO0305 Bundle-Ether61 REAL_TIME RTACPAE0101 GigabitEthernet0/0/0 REAL_TIME RTACPAE0102 GigabitEthernet0/0/0 REAL_TIME RTACPAE0101 GigabitEthernet0/0/1 REAL_TIME RTACPAE0102 GigabitEthernet0/0/1 REAL_TIME RTPERCE0303 GigabitEthernet0/3/0/4.1003 REAL_TIME RTECSRR0202 GigabitEthernet0/3/1/10.840 REAL_TIME RTPEBLM0104 GigabitEthernet0/3/1/6.1108 REAL_TIME RTPEBLM0104 GigabitEthernet0/3/1/6.1112 REAL_TIME RTOCCAS0101 GigabitEthernet6/0/0.850 REAL_TIME RTOCCTA0101 POS0/0/5/0 REAL_TIME RTECSRR0202 POS0/1/3/0 REAL_TIME RTACPAE0101 Serial0/3/0 REAL_TIME RTOCCAS0101 Serial1/3/2 REAL_TIME RTICSNE0102 TenGigE0/0/0/13 REAL_TIME RTICSNE0102 TenGigE0/0/0/3 REAL_TIME RTECBNU0102 TenGigE0/2/0/1 REAL_TIME RTECBNU0102 TenGigE0/3/0/1 REAL_TIME RTPESPO0303 TenGigE0/3/0/1 REAL_TIME RTPESPO0303 TenGigE0/4/0/1 REAL_TIME RTOCFLA0201 TenGigE0/4/0/5 REAL_TIME RTOCFLA0202 TenGigE0/4/0/5 REAL_TIME RTPESPO0304 TenGigE0/5/0/1 REAL_TIME RTPESPO0304 TenGigE0/6/0/0 REAL_TIME RTPESNE0103 TenGigE0/6/0/0.1771 REAL_TIME RTARSNE0101 GigabitEthernet0/3/1/10 REAL_TIME RTARSPO0301 GigabitEthernet0/3/1/12 REAL_TIME RTARSNE0101 GigabitEthernet0/3/1/3 REAL_TIME RTARSPO0301 GigabitEthernet0/3/1/3 REAL_TIME RTARSPO0301 GigabitEthernet0/3/1/5 REAL_TIME RTARSPO0301 GigabitEthernet0/3/1/6 REAL_TIME RTARSNE0101 GigabitEthernet0/3/1/8 REAL_TIME RTARSNE0101 TenGigE0/1/0/7 REAL_TIME RTARSPO0301 TenGigE0/1/0/7 REAL_TIME RTARSPO0301 GigabitEthernet0/3/1/15.10 REAL_TIME RTACPAE0101 Serial0/3/2 REAL_TIME '; preg_match_all($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