FFI::string
  (PHP 7 >= 7.4.0, PHP 8)
FFI::string — Creates a PHP string from a memory area
  
 
 
  参数
  
   
    ptr 
    - 
     
      The start of the memory area from which to create a string.
     
     
   
   
    size 
    - 
     
      The number of bytes to copy to the string.
      If size is omitted or null, ptr must be a zero terminated
      array of C char.
     
     
   
  
  
 
  返回值
  
   The freshly created PHP string.