Predefined Characters and Classes : Char « Data Type « PHP

1. PHP
2. Data Type
3. Char

Predefined Characters and Classes

Character Meaning

\a        Beep

\n        Newline character

\r        Carriage return

\t        Tab

\f        Formfeed

\e        Escape

\d        Digit (same as [0-9])

\D        Nondigit character (same as [^0-9])

\w        Word character (same as [a-zA-Z0-9_])

\W        Nonword character

\s        White-space character (same as [ \t\n\r\f])

\S        Non White-space character

\xX       Hexadecimal digit

\cX       Matches the corresponding control character
           
       

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