regex - Regular Expression Validation for a Phone no that will accept nos,dashes and + -


I just need a regular expression that will validate the phone not entered in the text box. This textbox can only allow numbers, dashes (-) and plus (+) and can be up to 15 characters and a minimum of 11 characters. (+) Can (Optional) come only on starting the phone number.

Please answer.

The answer to your question is on: 

  \ +? [\ D]] {1,13}   
     
  •   \ +?  means "a '+' character of zero"  
  •   [\ d -] {1,13}  means 1 to 13 digits or hyphen "   
     However, I think that you should use some more instructions. At least 8 digits may be required and the hyphen can not be either first or last:  
      ^ (? = (. * \ D) {8,13}) \ +? (?! -) [\ d -] * (? & Lt;! -) $

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