GZPASSTHRU(3) 1 GZPASSTHRU(3)gzpassthru - Output all remaining data on a gz-file pointerSYNOPSIS
int gzpassthru (resource $zp)
DESCRIPTION
Reads to EOF on the given gz-file pointer from the current position and writes the (uncompressed) results to standard output.
Note
You may need to call gzrewind(3) to reset the file pointer to the beginning of the file if you have already written data to it.
Tip
If you just want to dump the contents of a file to the output buffer, without first modifying it or seeking to a particular offset,
you may want to use the readgzfile(3) function, which saves you the gzopen(3) call.
PARAMETERS
o $zp
- The gz-file pointer. It must be valid, and must point to a file successfully opened by gzopen(3).
RETURN VALUES
The number of uncompressed characters read from $gz and passed through to the input, or FALSE on error.
EXAMPLES
Example #1
gzpassthru(3) example
<?php
$fp = gzopen('file.gz', 'r');
gzpassthru($fp);
gzclose($fp);
?>
PHP Documentation Group GZPASSTHRU(3)
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GZSEEK(3) 1 GZSEEK(3)gzseek - Seek on a gz-file pointerSYNOPSIS
int gzseek (resource $zp, int $offset, [int $whence = SEEK_SET])
DESCRIPTION
Sets the file position indicator for the given file pointer to the given offset byte into the file stream. Equivalent to calling (in C)
gzseek(zp, offset, SEEK_SET).
If the file is opened for reading, this function is emulated but can be extremely slow. If the file is opened for writing, only forward
seeks are supported; gzseek(3) then compresses a sequence of zeroes up to the new starting position.
PARAMETERS
o $zp
- The gz-file pointer. It must be valid, and must point to a file successfully opened by gzopen(3).
o $offset
- The seeked offset.
o $whence
-$whence values are:
o SEEK_SET - Set position equal to $offset bytes.
o SEEK_CUR - Set position to current location plus $offset.
If $whence is not specified, it is assumed to be SEEK_SET.
RETURN VALUES
Upon success, returns 0; otherwise, returns -1. Note that seeking past EOF is not considered an error.
EXAMPLES
Example #1
gzseek(3) example
<?php
$gz = gzopen('somefile.gz', 'r');
gzseek($gz,2);
echo gzgetc($gz);
gzclose($gz);
?>
SEE ALSO gztell(3), gzrewind(3).
PHP Documentation Group GZSEEK(3)
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