quotemeta() - string

Returns a version of str with a backslash character ()
   before every character that is among these: 
   .  + * ? [ ^ ] ( $ )

Parameters : 
 str - The input string. 

Syntax

string quotemeta
    ( string $str
   )

Example

. \ + * ? [ ^ ] ( $ )

Output / Return Value

Limitations

Alternatives / See Also

Reference