stream_bucket_prepend

(PHP 5)

stream_bucket_prepend — Prepend bucket to brigade

说明

void stream_bucket_prepend ( resource $brigade , object $bucket )

This function can be called to prepend a bucket to a bucket brigade. It is typically called from php_user_filter::filter() .

参数

brigade: brigade is a resource pointing to a bucket brigade which contains one or more bucket objects.
bucket: A bucket object.

返回值

没有返回值。

范例

Example #1 stream_bucket_prepend() examples

  <?php

 class  foo  extends  php_user_filter  {
  protected  $calls  =  0 ;
  public function  filter ( $in ,  $out , & $consumed ,  $closing ) {
    while ( $bucket  =  stream_bucket_make_writeable ( $in )) {
       $consumed  +=  $bucket -> datalen ;
      if ( $this -> calls ++ ==  2 ) {
         // This bucket will appear again before any other bucket.
         stream_bucket_prepend ( $in ,  $bucket );
      }
    }
    return  PSFS_FEED_ME ;
  }
}
 stream_filter_register ( 'test' ,  'foo' );
print   file_get_contents ( 'php://filter/read=test/resource=foo' );
 ?>