Php/docs/function.stream-bucket-prepend

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• Stream 函数
• Prepend bucket to brigade

stream_bucket_prepend

(PHP 5, PHP 7)

stream_bucket_prepend — Prepend bucket to brigade

说明

stream_bucket_prepend ( resource $brigade , object $bucket ) : void

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

<?phpclass 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');?>