tao-test/app/vendor/respect/validation/docs/rules/Xdigit.md

Xdigit

• v::xdigit()

Accepts an hexadecimal number:

v::xdigit()->validate('abc123'); // true

Notice, however, that it doesn't accept strings starting with 0x:

v::xdigit()->validate('0x1f'); // false

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See also:

• Alnum
• Digit
• HexRgbColor