PHP funkce stream_filter_prepend()
Dostupnost ve verzích: PHP 4.3.0
Attach a filter to a stream
Parametry
| Parametr | Datový typ | Výchozí hodnota | Poznámka |
|---|---|---|---|
$stream |
resource |
není | The target stream. |
$filtername |
string |
není | The filter name. |
$read_write |
int |
null, | By default, stream_filter_prepend will attach the filter to the read filter chain if the file was opened for reading (i.e. File Mode: r, and/or +). The filter will also be attached to the write filter chain if the file was opened for writing (i.e. File Mode: w, a, and/or +). STREAM_FILTER_READ, STREAM_FILTER_WRITE, and/or STREAM_FILTER_ALL can also be passed to the read_write parameter to override this behavior. See stream_filter_append for an example of using this parameter. |
$params |
mixed |
null | This filter will be added with the specified params to the beginning of the list and will therefore be called first during stream operations. To add a filter to the end of the list, use stream_filter_append. |
Návratové hodnoty
resource
a resource which can be used to refer to this filter instance during a call to stream_filter_remove.