Predefined Constants
 
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.
 
  
   - 
    XDIFF_PATCH_NORMAL(integer)
- 
    
     This flag indicates that xdiff_string_patch() and
     xdiff_file_patch() functions should create result by
     applying patch to original content thus creating newer version of file. This is the default
     mode of operation.
    
   
- 
    XDIFF_PATCH_REVERSE(integer)
- 
    
     This flag indicated that xdiff_string_patch() and
     xdiff_file_patch() functions should create result by
     reversing patch changed from newer content thus creating original version.