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.
 
  
   
    - 
     YAC_VERSION(string)
- 
     
     
    
- 
     YAC_MAX_KEY_LEN(int)
- 
     
      Max length of a key could be, it is 48 bytes.
     
    
- 
     YAC_MAX_VALUE_RAW_LEN(int)
- 
     
     
    
- 
     YAC_MAX_RAW_COMPRESSED_LEN(int)
- 
     
     
    
- 
     YAC_SERIALIZER_PHP(int)
- 
     
      Use php serialize as serializer
     
    
- 
     YAC_SERIALIZER_JSON(int)
- 
     
      Use json as serializer(requrie --enable-json)
     
    
- 
     YAC_SERIALIZER_IGBINARY(int)
- 
     
      Use igbinary as serializer(require --enable-igbinary)
     
    
- 
     YAC_SERIALIZER_MSGPACK(int)
- 
     
      Use msgpack as serializer(require --enable-msgpack)
     
    
- 
     YAC_SERIALIZER(string)
- 
     
       Which serialzier is yac used