k2hpx_da_get_value_to_file

Reads value using the offset and write it to the file

Description

bool k2hpx_da_get_value_to_file ( mixed $dahandle_res , string $filepath [, int $length [, int $offset ]] )

Reads value using the offset and write it to the file.

Note

The k2hash direct access handle is a handler to provide quick access to the specific part of large data using offset.

Parameters

• dahandle_res
  Specifies the k2hash direct access file handle that k2hpx_da_get_handle returns.
• filepath
  Specifies the file where the data be written.
• length
  Specifies the data length to be written.
• offset
  Specifies the offset to be read.

Return Values

Returns true on success or false on failure.

Examples

• Example 1 - Reads data and write it to the file

<?php
$handle = k2hpx_open_mem();
k2hpx_set_value($handle, "test", "value");
$dahandle = k2hpx_da_get_handle_rw($handle, "test");
var_dump(k2hpx_da_get_value_to_file($dahandle, "/tmp/test_k2hash_da_get_value", 5));
k2hpx_da_free($dahandle);
k2hpx_close($handle);
?>

The above example will output:

bool(true)

See Also

• k2hpx_da_free - Frees resources of k2hash direct access handle
• k2hpx_da_get_handle_read - Reads data
• k2hpx_da_get_handle_rw - Gets the k2h direct access file handle with read-write only mode
• k2hpx_da_get_handle_write - Gets the k2h direct access file handle with write only mode
• k2hpx_da_get_handle - Gets the k2h direct access file handle
• k2hpx_da_get_length - Gets the data length
• k2hpx_da_get_offset - Gets the k2h direct access file offset with read-write access mode
• k2hpx_da_get_read_offset - Gets the k2h direct access file offset with read access mode
• k2hpx_da_get_value - Reads value using the offset
• k2hpx_da_get_write_offset - Gets the k2h direct access file offset with write access mode
• k2hpx_da_set_offset - Sets the offset to modify the data
• k2hpx_da_set_read_offset - Sets the offset to read the data
• k2hpx_da_set_value_from_file - Sets value using the offset reading data from the file with length
• k2hpx_da_set_value - Sets value
• k2hpx_da_set_write_offset - Sets value using the offset