Regular Expressions Patterns

• Integer (positive and negative)
  • ^[+-]?\d+$
  • ^[+-]?[0-9]+$
  • Matches: any signed integer
• Integer (positive)
  • ^[0-9]+$
  • Matches: any positive signed integer
• Integer (negative)
  • ^[-][0-9]+$
  • Matches: any negative signed integer
• Decimal (positive and negative)
  • ^[-+]?\d+(\.\d+)?$
  • ^[+-]?[0-9]*(?:\.[0-9]*)?$
  • Matches: 123 | -123.45 | +123.56
• Decimal (positive)
  • ^[+]?[0-9]*(?:\.[0-9]*)?$
  • Matches: 123 | 123.45 | +123.56
• Decimal (negative)
  • ^[-][0-9]*(?:\.[0-9]*)?$
  • Matches: -123 | -123.45 | -123.56
• Number (positive and negative)
  • ^[+-]?([0-9]*\.?[0-9]+|[0-9]+\.?[0-9]*)([eE][+-]?[0-9]+)?$
  • Matches: 23 | -17.e23 | +.23e+2  
• Natural Number
  • ^[0-9]*[1-9]+$|^[1-9]+[0-9]*$
• Alphabetical
  • [^a-zA-Z]
  • Matches: ABC | Test | xyz
• Alphanumeric
  • [^a-zA-Z0-9]
  • ^[a-zA-Z0-9_]*$
  • Matches: ABC | Test123
• E-Mail
  • ^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$
  • Matches: AhmedNegm@WindowsLive.com
• Date
  • ^(((0[1-9]|[12]\d|3[01])\/(0[13578]|1[02])\/((19|[2-9]\d)\d{2}))|((0[1-9]|[12]\d|30)\/(0[13456789]|1[012])\/((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])\/02\/((19|[2-9]\d)\d{2}))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))|^(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)\d\d+$
  • Matches: this expression validates a date field in dd/mm/yyyy  and mm/dd/yyyy format
• Temperature
  • ^[-+]?\d*(\.\d+)?( )?(Celsius|C|c|CELSIUS|Fahrenheit|F|f|FAHRENHEIT|Kelvin|K|k|KELVIN)?$
  • Matches: 34F | 56 Celsius | 22C
• Egyptian National ID
  • (2|3)[0-9][1-9][0-1][1-9][0-3][1-9](01|02|03|04|11|12|13|14|15|16|17|18|19|21|22|23|24|25|26|27|28|29|31|32|33|34|35|88)\d\d\d\d\d
• Egyptian Mobile Number
  • (201)[0-9]{9}
• Hexadecimal String
  • ^[0-9A-Fa-f]+$
  • Matches: 062706440644064700200623064306280631