Visa Card Pattern Python Example

visa card pattern python example for production applications

python

beginner

93% accurate

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Regular Expression

/^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13})$/

Explanation

This regex pattern validates visa card pattern python example. Commonly used by developers for input validation and form checking.

Code Examples

JavaScript Example

javascript

// visa card pattern python example - JavaScript
const regex = /^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13})$/;

function validate(input) {
  if (!input || typeof input !== 'string') return false;
  return regex.test(input.trim());
}

// Usage examples
console.log(validate('4111111111111111')); // true
console.log(validate('1234')); // false

Python Example

python

# visa card pattern python example - Python
import re

pattern = r"^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13})$"
regex = re.compile(pattern)

def validate(input_str):
    if not input_str or not isinstance(input_str, str):
        return False
    return bool(regex.match(input_str.strip()))

# Usage examples
print(validate('4111111111111111'))  # True
print(validate('1234'))  # False

PHP Example

php

<?php
// visa card pattern python example - PHP
function validate($input) {
    if (!is_string($input) || empty(trim($input))) {
        return false;
    }
    
    $pattern = '/^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13})$/';
    return preg_match($pattern, trim($input)) === 1;
}

// Usage examples
var_dump(validate('4111111111111111')); // bool(true)
var_dump(validate('1234')); // bool(false)
?>