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
Processing...

Test String

Code Generator

Language

Generated Code

import re regex = re.compile(r"('factories' => )(\[((?>[^\[\]]++|(?2))*)\])", flags=re.MULTILINE) test_str = ("<?php\n\n" "namespace Application;\n\n" "use Laminas\\Router\\Http\\Literal;\n" "use Laminas\\Router\\Http\\Segment;\n" "use Laminas\\ServiceManager\\Factory\\InvokableFactory;\n\n" "return [\n" " \n" " 'view_manager' => [\n" " 'template_path_stack' => [\n" " \n" " __DIR__ . '/../view',\n" " __DIR__ . '/../view/Application/_shared'\n\n" " ],\n" " ],\n" " 'controllers' => [\n" " 'factories' => [\n" " dsdsa\n" " ]\n" " ],\n" " \n" " 'service_manager' => [\n" " 'factories' => [\n" " \n" " 'UsersTableGateway' => function ($sm) {\n" " $dbAdapter = $sm->get('Laminas\\Db\\Adapter\\Adapter');\n" " $resultSetPrototype = new \\Laminas\\Db\\ResultSet\\ResultSet();\n" " //get base url from config\n" " $config = $sm->get('Config');\n" " $baseUrl = $config['view_manager']['base_url'];\n" " \n" " //pass base url via cnstructor to the User class\n" " $resultSetPrototype->setArrayObjectPrototype(new Model\\Rowset\\User($baseUrl));\n" " return new Utils\\TableGateway('users', $dbAdapter, null, $resultSetPrototype);\n" " },\n" " 'Application\\Model\\UsersTable' => function($sm) {\n" " $tableGateway = $sm->get('UsersTableGateway');\n" " $table = new Model\\UsersTable($tableGateway);\n" " \n" " return $table;\n" " },\n" " Utils\\Authentication::class => function($sm) {\n" " $auth = new Utils\\Authentication(\n" " $sm->get(\\Laminas\\Db\\Adapter\\Adapter::class),\n" " $sm->get(Utils\\Adapter::class) \n" " );\n" " return $auth;\n" " },\n" " Utils\\Helper::class => InvokableFactory::class,\n" " \n" " SessionManager::class => function ($container) {\n" " $config = $container->get('config');\n" " $session = $config['session'];\n" " $sessionConfig = new $session['config']['class']();\n" " $sessionConfig->setOptions($session['config']['options']);\n" " $sessionManager = new Session\\SessionManager(\n" " $sessionConfig,\n" " new $session['storage'](),\n" " null\n" " );\n" " \\Laminas\\Session\\Container::setDefaultManager($sessionManager);\n" " \n" " return $sessionManager;\n" " },\n\n" " ],\n" " ],\n" "];") matches = regex.finditer(test_str) for match_num, match in enumerate(matches, start=1): print(f"Match {match_num} was found at {match.start()}-{match.end()}: {match.group()}") for group_num, group in enumerate(match.groups(), start=1): print(f"Group {group_num} found at {match.start(group_num)}-{match.end(group_num)}: {group}")

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 Python, please visit: https://docs.python.org/3/library/re.html