Please notice that the return value of this function is a boolean but the return value of fseek is 0 for ok and -1 for failure.
Please use this implementation when working with files:
function stream_seek($offset, $whence) {
if(0 === fseek($this->_handler, $offset, $whence)){
return true;
}
return false;
}
streamWrapper::stream_seek
(PHP 4 >= 4.3.2, PHP 5, PHP 7)
streamWrapper::stream_seek — Seeks to specific location in a stream
Descrierea
public streamWrapper::stream_seek
( int
$offset
, int $whence = SEEK_SET
) : boolThis method is called in response to fseek().
The read/write position of the stream should be updated according to the
offset and whence.
Parametri
-
offset -
The stream offset to seek to.
-
whence -
Possible values:
SEEK_SET- Set position equal tooffsetbytes.SEEK_CUR- Set position to current location plusoffset.SEEK_END- Set position to end-of-file plusoffset.
Notă: The current implementation never sets
whencetoSEEK_CUR; instead such seeks are internally converted toSEEK_SETseeks.
Valorile întoarse
Return true if the position was updated, false otherwise.
Note
Notă:
If not implemented,
falseis assumed as the return value.
Notă:
Upon success, streamWrapper::stream_tell() is called directly after calling streamWrapper::stream_seek(). If streamWrapper::stream_tell() fails, the return value to the caller function will be set to
false
Notă:
Not all seeks operations on the stream will result in this function being called. PHP streams have read buffering enabled by default (see also stream_set_read_buffer()) and seeking may be done by merely moving the buffer pointer.
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User Contributed Notes 1 note
fb at tigermedia dot dk ¶
10 years ago
