stream_bucket_prepend()
(PHP 5, PHP 7)
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 fromphp_user_filter::filter().
参数
- $brigade
$brigadeis a resource pointing to abucket brigadewhich contains one or morebucketobjects.
- $bucket
A bucket object.
返回值
没有返回值。
范例
Example #1stream_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'); ?>