Regular Expressions 101

Explanation

Pro

\(?optionally matches the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 1(\d{3})

\d{3}a digit, repeated exactly 3 times

\)?optionally matches the literal ) (41₁₀ / 51₈ / 29₁₆)

Character Class[-\h]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\hany horizontal whitespace character

Group 2(\d{3})

\d{3}a digit, repeated exactly 3 times

Character Class[-)\h]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\hany horizontal whitespace character

Group 3(\d{4})

\d{4}a digit, repeated exactly 4 times

\h*any horizontal whitespace character, repeated any number of times

Non-Capturing Group(?:e?x?t?(?:ension)?\h(\d+))?

?repeats the group contents below at most once:

e?optionally matches the literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

x?optionally matches the literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

t?optionally matches the literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

Non-Capturing Group(?:ension)?

?repeats the group contents below at most once:

ensionthe literal text ension (case sensitive)

\hany horizontal whitespace character

Group 4(\d+)

\d+a digit, repeated at least once

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

\(?(\d{3})\)?[-\h]?(\d{3})[-)\h]?(\d{4})\h*(?:e?x?t?(?:ension)?\h(\d+))?

$tests[] = "941-751-6550 ext 2204";
$tests[] = "(941) 751-6550 ext 2204";
$tests[] = "(941)751-6550 ext 2204";
$tests[] = "9417516550 ext 2204";
$tests[] = "941-751-6550 e 2204";
$tests[] = "941-751-6550 ext 2204 ";
$tests[] = "941-751-6550 extension 2204";
$tests[] = "941-751-6550 x2204";
$tests[] = "(941) 751-6550";
$tests[] = "(941)7516550";
$tests[] = "941-751-6550 ";
$tests[] = "941-751-6550";