(PECL apc >= 3.1.4)
apc_bin_dumpfile — Output a binary dump of cached files and user variables to a file
$files
, array $user_vars
, string $filename
[, int $flags = 0
[, resource $context
]] )Outputs a binary dump of the given files and user variables from the APC cache to the named file.
files
The file names being dumped.
user_vars
The user variables being dumped.
filename
The filename where the dump is being saved.
flags
Flags passed to the filename stream. See the
file_put_contents() documentation for details.
context
The context passed to the filename stream. See the
file_put_contents() documentation for details.
The number of bytes written to the file, otherwise
FALSE if APC is not enabled, filename is an invalid file name,
filename can't be opened, the file dump can't be completed
(e.g., the hard drive is out of disk space), or an unknown error was encountered.
eric at midkotasolutions dot com (2011-02-24 18:50:24)
To prevent losing all of your APC custom user data on an apache restart, use this function along with apc_bin_loadfile to save your APC Memory Data on a restart of apache.
e.g. Write a php script to dump the file and one to re-load the file. Call the dump script directly before stopping apache, and then call the reload script directly after starting apache.
<?php
//saveapc
apc_bin_dumpfile(array(),null,"/path/to/my/file.data");
?>
<?php
//loadapc
apc_bin_loadfile("/path/to/my/file.data");
?>
# wget http://www.example.com/saveapc.php
# /etc/init.d/httpd restart
# wget http://www.example.com/loadapc.php
Particularly useful if you have a custom session handler using APC for storage
Even more handy, update the httpd restart bash script to automatically make these calls for you on a restart