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(PECL rar >= 3.0.0)
RarArchive::isBroken -- rar_broken_is — Test whether an archive is broken (incomplete)
面向对象风格 (method):
过程化风格:
$rarfile 
   )This function determines whether an archive is incomplete, i.e., if a volume is missing or a volume is truncated.
rarfile A RarArchive object, opened with rar_open() .
   Returns  TRUE  if the archive is broken,  FALSE  otherwise. This function may also
   return  FALSE  if the passed file has already been closed. The only way
   to tell the two cases apart is to enable
   exceptions with  RarException::setUsingExceptions() ; however,
   this should be unnecessary as a program should not operate on closed files.
  
Example #1 面向对象风格
  <?php
 function  retnull () { return  null ; }
 $file  =  dirname ( __FILE__ ) .  "/multi_broken.part1.rar" ;
 
 $arch  =  RarArchive :: open ( $file ,  null ,  'retnull' );
 var_dump ( $arch -> isBroken ());
 ?>   以上例程的输出类似于:
bool(true)
Example #2 过程化风格
  <?php
 function  retnull () { return  null ; }
 $file  =  dirname ( __FILE__ ) .  "/multi_broken.part1.rar" ;
 
 $arch  =  rar_open ( $file ,  null ,  'retnull' );
 var_dump ( rar_broken_is ( $arch ));
 ?>