(PHP 5 >= 5.2.0, PECL zip >= 1.3.0)
ZipArchive::getFromIndex — Returns the entry contents using its index
Returns the entry contents using its index.
index
     Index of the entry
length
     The length to be read from the entry. If 0, then the entire entry is read.
flags
     The flags to use to open the archive. the following values may be ORed to it.
          ZIPARCHIVE::FL_UNCHANGED
         
          ZIPARCHIVE::FL_COMPRESSED
         
   Returns the contents of the entry on success 或者在失败时返回 FALSE.
  
Example #1 Get the file contents
<?php
$zip = new ZipArchive;
if ($zip->open('test.zip') === TRUE) {
    echo $zip->getFromIndex(2);
    $zip->close();
} else {
    echo 'failed';
}
?>