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

Code Generator

Language

Generated Code

$re = '/(?:[\'\"`]([^\'\"`]*)[\'\"`])/'; $str = 'export default { root: ({ props, context, parent }) => ({ class: [ \'relative\', // Alignments \'items-center inline-flex text-center align-bottom justify-center\', // Sizes & Spacing \'leading-[normal]\', { \'px-4 py-3\': props.size === null, \'text-sm py-2 px-3\': props.size === \'small\', \'text-xl py-3 px-4\': props.size === \'large\' }, { \'w-12 p-0 py-3\': props.label == null && props.icon !== null }, // Shapes { \'shadow-lg\': props.raised }, { \'rounded-md\': !props.rounded, \'rounded-full\': props.rounded }, { \'rounded-none first:rounded-l-md last:rounded-r-md\': parent.instance.$name == \'InputGroup\' }, // Link Button { \'text-primary-600 bg-transparent border-transparent\': props.link }, // Plain Button { \'text-white bg-gray-500 border border-gray-500\': props.plain && !props.outlined && !props.text }, // Plain Text Button { \'text-surface-500\': props.plain && props.text }, // Plain Outlined Button { \'text-surface-500 border border-gray-500\': props.plain && props.outlined }, // Text Button { \'bg-transparent border-transparent\': props.text && !props.plain }, // Outlined Button { \'bg-transparent border\': props.outlined && !props.plain }, // --- Severity Buttons --- // Primary Button { \'text-primary-inverse\': !props.link && props.severity === null && !props.text && !props.outlined && !props.plain, \'bg-primary\': !props.link && props.severity === null && !props.text && !props.outlined && !props.plain, \'border border-primary\': !props.link && props.severity === null && !props.text && !props.outlined && !props.plain }, // Primary Text Button { \'text-primary\': props.text && props.severity === null && !props.plain }, // Primary Outlined Button { \'text-primary border border-primary\': props.outlined && props.severity === null && !props.plain }, // Secondary Button { \'text-white dark:text-surface-900\': props.severity === \'secondary\' && !props.text && !props.outlined && !props.plain, \'bg-surface-500 dark:bg-surface-400\': props.severity === \'secondary\' && !props.text && !props.outlined && !props.plain, \'border border-surface-500 dark:border-surface-400\': props.severity === \'secondary\' && !props.text && !props.outlined && !props.plain }, // Secondary Text Button { \'text-surface-500 dark:text-surface-300\': props.text && props.severity === \'secondary\' && !props.plain }, // Secondary Outlined Button { \'text-surface-500 dark:text-surface-300 border border-surface-500 hover:bg-surface-300/20\': props.outlined && props.severity === \'secondary\' && !props.plain }, // Success Button { \'text-white dark:text-green-900\': props.severity === \'success\' && !props.text && !props.outlined && !props.plain, \'bg-green-500 dark:bg-green-400\': props.severity === \'success\' && !props.text && !props.outlined && !props.plain, \'border border-green-500 dark:border-green-400\': props.severity === \'success\' && !props.text && !props.outlined && !props.plain }, // Success Text Button { \'text-green-500 dark:text-green-400\': props.text && props.severity === \'success\' && !props.plain }, // Success Outlined Button { \'text-green-500 border border-green-500 hover:bg-green-300/20\': props.outlined && props.severity === \'success\' && !props.plain }, // Info Button { \'text-white dark:text-surface-900\': props.severity === \'info\' && !props.text && !props.outlined && !props.plain, \'bg-blue-500 dark:bg-blue-400\': props.severity === \'info\' && !props.text && !props.outlined && !props.plain, \'border border-blue-500 dark:border-blue-400\': props.severity === \'info\' && !props.text && !props.outlined && !props.plain }, // Info Text Button { \'text-blue-500 dark:text-blue-400\': props.text && props.severity === \'info\' && !props.plain }, // Info Outlined Button { \'text-blue-500 border border-blue-500 hover:bg-blue-300/20 \': props.outlined && props.severity === \'info\' && !props.plain }, // Warning Button { \'text-white dark:text-surface-900\': props.severity === \'warning\' && !props.text && !props.outlined && !props.plain, \'bg-orange-500 dark:bg-orange-400\': props.severity === \'warning\' && !props.text && !props.outlined && !props.plain, \'border border-orange-500 dark:border-orange-400\': props.severity === \'warning\' && !props.text && !props.outlined && !props.plain }, // Warning Text Button { \'text-orange-500 dark:text-orange-400\': props.text && props.severity === \'warning\' && !props.plain }, // Warning Outlined Button { \'text-orange-500 border border-orange-500 hover:bg-orange-300/20\': props.outlined && props.severity === \'warning\' && !props.plain }, // Help Button { \'text-white dark:text-surface-900\': props.severity === \'help\' && !props.text && !props.outlined && !props.plain, \'bg-purple-500 dark:bg-purple-400\': props.severity === \'help\' && !props.text && !props.outlined && !props.plain, \'border border-purple-500 dark:border-purple-400\': props.severity === \'help\' && !props.text && !props.outlined && !props.plain }, // Help Text Button { \'text-purple-500 dark:text-purple-400\': props.text && props.severity === \'help\' && !props.plain }, // Help Outlined Button { \'text-purple-500 border border-purple-500 hover:bg-purple-300/20\': props.outlined && props.severity === \'help\' && !props.plain }, // Danger Button { \'text-white dark:text-surface-900\': props.severity === \'danger\' && !props.text && !props.outlined && !props.plain, \'bg-red-500 dark:bg-red-400\': props.severity === \'danger\' && !props.text && !props.outlined && !props.plain, \'border border-red-500 dark:border-red-400\': props.severity === \'danger\' && !props.text && !props.outlined && !props.plain }, // Danger Text Button { \'text-red-500 dark:text-red-400\': props.text && props.severity === \'danger\' && !props.plain }, // Danger Outlined Button { \'text-red-500 border border-red-500 hover:bg-red-300/20\': props.outlined && props.severity === \'danger\' && !props.plain }, // Contrast Button { \'text-white dark:text-surface-900\': props.severity === \'contrast\' && !props.text && !props.outlined && !props.plain, \'bg-surface-900 dark:bg-surface-0\': props.severity === \'contrast\' && !props.text && !props.outlined && !props.plain, \'border border-surface-900 dark:border-surface-0\': props.severity === \'contrast\' && !props.text && !props.outlined && !props.plain }, // Contrast Text Button { \'text-surface-900 dark:text-surface-0\': props.text && props.severity === \'contrast\' && !props.plain }, // Contrast Outlined Button { \'text-surface-900 dark:text-surface-0 border border-surface-900 dark:border-surface-0\': props.outlined && props.severity === \'contrast\' && !props.plain }, // --- Severity Button States --- \'focus:outline-none focus:outline-offset-0 focus:ring\', // Link { \'focus:ring-primary\': props.link }, // Plain { \'hover:bg-gray-600 hover:border-gray-600\': props.plain && !props.outlined && !props.text }, // Text & Outlined Button { \'hover:bg-surface-300/20\': props.plain && (props.text || props.outlined) }, // Primary { \'hover:bg-primary-hover hover:border-primary-hover\': !props.link && props.severity === null && !props.text && !props.outlined && !props.plain }, { \'focus:ring-primary\': props.severity === null }, // Text & Outlined Button { \'hover:bg-primary-300/20\': (props.text || props.outlined) && props.severity === null && !props.plain }, // Secondary { \'hover:bg-surface-600 dark:hover:bg-surface-300 hover:border-surface-600 dark:hover:border-surface-300\': props.severity === \'secondary\' && !props.text && !props.outlined && !props.plain }, { \'focus:ring-surface-400/50 dark:focus:ring-surface-300/50\': props.severity === \'secondary\' }, // Text & Outlined Button { \'hover:bg-surface-300/20\': (props.text || props.outlined) && props.severity === \'secondary\' && !props.plain }, // Success { \'hover:bg-green-600 dark:hover:bg-green-300 hover:border-green-600 dark:hover:border-green-300\': props.severity === \'success\' && !props.text && !props.outlined && !props.plain }, { \'focus:ring-green-400/50 dark:focus:ring-green-300/50\': props.severity === \'success\' }, // Text & Outlined Button { \'hover:bg-green-300/20\': (props.text || props.outlined) && props.severity === \'success\' && !props.plain }, // Info { \'hover:bg-blue-600 dark:hover:bg-blue-300 hover:border-blue-600 dark:hover:border-blue-300\': props.severity === \'info\' && !props.text && !props.outlined && !props.plain }, { \'focus:ring-blue-400/50 dark:focus:ring-blue-300/50\': props.severity === \'info\' }, // Text & Outlined Button { \'hover:bg-blue-300/20\': (props.text || props.outlined) && props.severity === \'info\' && !props.plain }, // Warning { \'focus:ring-orange-400/50 dark:focus:ring-orange-300/50\': props.severity === \'warning\' }, // Text & Outlined Button { \'hover:bg-orange-600 \': props.severity === \'warning\' }, // Text & Outlined Button { \'hover:bg-orange-600 \': props.severity === \'warning\' }, // Text & Outlined Button { \'hover:bg-orange-300/20\': (props.text || props.outlined) && props.severity === \'warning\' && !props.plain }, // Help { \'hover:bg-purple-600 dark:hover:bg-purple-300 hover:border-purple-600 dark:hover:border-purple-300\': props.severity === \'help\' && !props.text && !props.outlined && !props.plain }, { \'focus:ring-purple-400/50 dark:focus:ring-purple-300/50\': props.severity === \'help\' }, // Text & Outlined Button { \'hover:bg-purple-300/20\': (props.text || props.outlined) && props.severity === \'help\' && !props.plain }, // Danger { \'hover:bg-red-600 dark:hover:bg-red-300 hover:border-red-600 dark:hover:border-red-300\': props.severity === \'danger\' && !props.text && !props.outlined && !props.plain }, { \'focus:ring-red-400/50 dark:focus:ring-red-300/50\': props.severity === \'danger\' }, // Text & Outlined Button { \'hover:bg-red-300/20\': (props.text || props.outlined) && props.severity === \'danger\' && !props.plain }, // Contrast { \'hover:bg-surface-800 dark:hover:bg-surface-100 hover:border-surface-800 dark:hover:border-surface-100\': props.severity === \'contrast\' && !props.text && !props.outlined && !props.plain }, { \'focus:ring-surface-500 dark:focus:ring-surface-400\': props.severity === \'contrast\' }, // Text & Outlined Button { \'hover:bg-surface-900/10 dark:hover:bg-[rgba(255,255,255,0.03)]\': (props.text || props.outlined) && props.severity === \'contrast\' && !props.plain }, // Disabled { \'opacity-60 pointer-events-none cursor-default\': context.disabled }, // Transitions \'transition duration-200 ease-in-out\', // Misc \'cursor-pointer overflow-hidden select-none\' ] }), label: ({ props }) => ({ class: [ \'duration-200 p-4 mt-4 mb-9 ring-1 \', \'font-bold\', { \'hover:underline\': props.link }, { \'flex-1\': props.label !== null, \'invisible w-0\': props.label == null } ] }), icon: ({ props }) => ({ class: [ \'mx-0\', { \'mr-2\': props.iconPos == \'left\' && props.label != null, \'ml-2 order-1\': props.iconPos == \'right\' && props.label != null, \'mb-2\': props.iconPos == \'top\' && props.label != null, \'mt-2\': props.iconPos == \'bottom\' && props.label != null } ] }), loadingicon: ({ props }) => ({ class: [ \'h-4 w-4\', \'mx-0\', { \'ml-2 order-1\': props.iconPos == \'right\' && props.label != null, \'mb-2\': props.iconPos == \'top\' && props.label != null, \'mt-2\': props.iconPos == \'bottom\' && props.label != null }, \'animate-spin\' ] }), badge: ({ props }) => ({ class: [ { \'ml-2 w-4 h-4 leading-none flex items-center justify-center\': props.badge } ] }) } '; 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