Regular Expressions 101

Explanation

Pro

^start of line

Positive Lookahead(?=(?:\+|0{2})?(?:(?:[\(\-\)\.\/ \t\f]*\d){7,10})?(?:[\-\.\/ \t\f]?\d{2,3})(?:[\-\s]?[ext]{1,3}[\-\.\/ \t\f]?\d{1,4})?$)

Non-Capturing Group(?:\+|0{2})?

?repeats the group contents below at most once:

1st Alternative\+

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

2nd Alternative0{2}

0{2}the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated exactly 2 times

Non-Capturing Group(?:(?:[\(\-\)\.\/ \t\f]*\d){7,10})?

?repeats the group contents below at most once:

Non-Capturing Group(?:[\(\-\)\.\/ \t\f]*\d){7,10}

{7,10}repeats the group contents below between 7 and 10 times:

Character Class[\(\-\)\.\/ \t\f]*

*matches any number of characters from the set below:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

\fa form-feed character (ASCII 12)

\da digit

Non-Capturing Group(?:[\-\.\/ \t\f]?\d{2,3})

Character Class[\-\.\/ \t\f]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

\fa form-feed character (ASCII 12)

\d{2,3}a digit, repeated between 2 and 3 times

Non-Capturing Group(?:[\-\s]?[ext]{1,3}[\-\.\/ \t\f]?\d{1,4})?

?repeats the group contents below at most once:

Character Class[\-\s]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\sany whitespace character

Character Class[ext]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

ethe literal e (101₁₀ / 145₈ / 65₁₆) (case insensitive)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case insensitive)

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case insensitive)

Character Class[\-\.\/ \t\f]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

\fa form-feed character (ASCII 12)

\d{1,4}a digit, repeated between 1 and 4 times

$end of line

Group 1((?:\+|0{2})\d{0,3})?

?repeats the group contents below at most once:

Non-Capturing Group(?:\+|0{2})

1st Alternative\+

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

2nd Alternative0{2}

0{2}the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated exactly 2 times

\d{0,3}a digit, repeated between 0 and 3 times

Non-Capturing Group(?:[\-\.\/ \t\f]?)

Character Class[\-\.\/ \t\f]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

\fa form-feed character (ASCII 12)

Group 2(\(0\d[ ]?\d{0,4}\)|\(\d{0,4}\)|\d{0,4})

1st Alternative\(0\d[ ]?\d{0,4}\)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

\da digit

Character Class[ ]?

?matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\d{0,4}a digit, repeated between 0 and 4 times

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative\(\d{0,4}\)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\d{0,4}a digit, repeated between 0 and 4 times

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

3rd Alternative\d{0,4}

\d{0,4}a digit, repeated between 0 and 4 times

Non-Capturing Group(?:[\-\.\/ \t\f]{0,2}\d){3,8}

{3,8}repeats the group contents below between 3 and 8 times:

Character Class[\-\.\/ \t\f]{0,2}

\da digit

Non-Capturing Group(?:[\-\s]?(?:x|ext)[\-\t\f ]?(\d{1,4}))?

$end of line

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

^(?=(?:\+|0{2})?(?:(?:[\(\-\)\.\/ \t\f]*\d){7,10})?(?:[\-\.\/ \t\f]?\d{2,3})(?:[\-\s]?[ext]{1,3}[\-\.\/ \t\f]?\d{1,4})?$)((?:\+|0{2})\d{0,3})?(?:[\-\.\/ \t\f]?)(\(0\d[ ]?\d{0,4}\)|\(\d{0,4}\)|\d{0,4})(?:[\-\.\/ \t\f]{0,2}\d){3,8}(?:[\-\s]?(?:x|ext)[\-\t\f ]?(\d{1,4}))?$

New

911
123456789
12345678
1234567890123
001231234567890
0012312345678901
123456789012
1234
0091234567890
+9 123-4567890-x321
+9-123-456-7890
+9 123 4 5 6-7890x1234
009-(123)-456-7890 ext4321
0091234567890x1234
+9-123-456-7890x12345
+9-123-456-7890 ext 1234
00123-(4321)-567.89 ext-4321
0027-123-456-7890
+27-123-456-7890
+9(123)4567890

(01 55) 1234 5678
(01 551) 12345678
+49 (1234) 567890
 (0)123456789
+34123456789
+34 (0)123456789
 +340123456789
+34 123		456 789
+34 1 23 45 67 89
001230123456789
ext1234
++34123456789
00-0-----000
01 555012345
001-555012345
+012345678
112
12(34567890
123)456789012345

1-234-567-8901
+1-234-567-8901 x1234
0011-234-567-8901 ext1234
)234( 567 8901
(234) 567 8901
+11 (234) 567-8901
+1.234.567.8901
+1/234/567/8901
12345678901
2345678901