Regular Expressions 101

^start of string

Character Class[0-9()\-+ ]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

$end of string

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Regular Expression

^[0-9()\-+ ]+$

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