Predefined Character Ranges (Character Classes) : Regular Expressions « String « PHP






  1. PHP
  2. String
  3. Regular Expressions

Predefined Character Ranges (Character Classes)

 
[[:alpha:]] matches any string containing alphabetic characters aA through zZ.
[[:digit:]] matches any string containing numerical digits 0 through 9.
[[:alnum:]] matches any string containing alphanumeric characters aA through zZ and 0 through 9.
[[:space:]] matches any string containing a space.








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