> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bytespace.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# RegEX Variable

> Use regular expressions to manipulate variables

The RegEX Variable block enables you to use regular expressions to extract or modify text data in your variables.

## Inputs

### ☐ Variable Name *(Required)*

The name of the variable to process with RegEx.

<Note type="success">
  **Good Examples:**

  * "emailText"
  * "phoneData"
  * "rawContent"
</Note>

### ☐ Method *(Required)*

Choose how to apply the RegEx:

<CardGroup cols={1}>
  <Card title="RegEx Operations">
    **Description:**
    Select the operation to perform.

    **Options:**

        ☐ Match value (extract matching text)

        ☐ Replace value (substitute matching text)

    **Flags Available:**

        ☐ g (global match)

        ☐ i (case insensitive)

        ☐ m (multiline)
  </Card>
</CardGroup>

### ☐ RegEx Pattern *(Required)*

The regular expression pattern to use.

<Card title="Email Pattern">
  ```plaintext theme={null}
  [\w.]+@[\w.]+\.\w{2,}
  ```
</Card>

<Card title="Phone Pattern (US Format)">
  ```plaintext theme={null}
  \d{3}[-.]?\d{3}[-.]?\d{4}
  ```
</Card>

<Card title="URL Pattern">
  ```plaintext theme={null}
  https?:\/\/\S+
  ```
</Card>

<Note>
  Add flags after the pattern:

  * `/pattern/g` for global matching
  * `/pattern/i` for case-insensitive
  * `/pattern/m` for multiline
</Note>

## Usage Examples

<CardGroup cols={2}>
  <Card title="1. Email Extraction" icon="envelope">
    <div className="flex flex-col space-y-2">
      <div className="flex items-center gap-2 text-sm">
        <span className="px-2 py-1 bg-purple-100 rounded-md">Variable</span>
        <code className="text-green-600">emailText</code>
      </div>

      <div className="flex items-center gap-2 text-sm">
        <span className="px-2 py-1 bg-purple-100 rounded-md">Method</span>
        <span className="font-mono bg-slate-100 px-2 py-1 rounded">Match</span>
      </div>
    </div>

    <Note className="mt-2">Extract email addresses from text</Note>
  </Card>

  <Card title="2. Phone Cleanup" icon="phone">
    <div className="flex flex-col space-y-2">
      <div className="flex items-center gap-2 text-sm">
        <span className="px-2 py-1 bg-purple-100 rounded-md">Variable</span>
        <code className="text-green-600">phoneNum</code>
      </div>

      <div className="flex items-center gap-2 text-sm">
        <span className="px-2 py-1 bg-purple-100 rounded-md">Method</span>
        <span className="font-mono bg-slate-100 px-2 py-1 rounded">Replace</span>
      </div>
    </div>

    <Note className="mt-2">Remove non-numeric characters from phone numbers</Note>
  </Card>

  <Card title="3. URL Finding" icon="link">
    <div className="flex flex-col space-y-2">
      <div className="flex items-center gap-2 text-sm">
        <span className="px-2 py-1 bg-purple-100 rounded-md">Variable</span>
        <code className="text-green-600">pageContent</code>
      </div>

      <div className="flex items-center gap-2 text-sm">
        <span className="px-2 py-1 bg-purple-100 rounded-md">Method</span>
        <span className="font-mono bg-slate-100 px-2 py-1 rounded">Match</span>
      </div>
    </div>

    <Note className="mt-2">Extract URLs from webpage content</Note>
  </Card>

  <Card title="4. Text Censoring" icon="eye-slash">
    <div className="flex flex-col space-y-2">
      <div className="flex items-center gap-2 text-sm">
        <span className="px-2 py-1 bg-purple-100 rounded-md">Variable</span>
        <code className="text-green-600">comment</code>
      </div>

      <div className="flex items-center gap-2 text-sm">
        <span className="px-2 py-1 bg-purple-100 rounded-md">Method</span>
        <span className="font-mono bg-slate-100 px-2 py-1 rounded">Replace</span>
      </div>
    </div>

    <Note className="mt-2">Replace inappropriate words with \*\*\*\*</Note>
  </Card>
</CardGroup>

## Notes

<Warning>
  * Test patterns before using
  * Use appropriate flags as needed
  * Consider performance with large datasets
  * Backup variables before replacement operations
</Warning>