Memcached Constants - Lame Code

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Thursday, June 18. 2009

Posted by Paul Reinheimer in PHP

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Memcached Constants - Lame Code

Please find below an incredibly lame piece of code to print out the values of all the memcached constants defined on their doc page. I was running into a few errors, and getResultCode() was obligingly returning the value of the constant, rather than the constant itself. I had to look up what that value meant. For some reason I couldn't reflect the extension to get the constants and values thereof, so with some lame scraping you get the following. Code under the jump, answers (as of our version of various libraries) here:

Memcached::OPT_COMPRESSION - -1001
Memcached::OPT_SERIALIZER - -1003
Memcached::SERIALIZER_PHP - 1
Memcached::SERIALIZER_IGBINARY - 2
Memcached::SERIALIZER_JSON - 3
Memcached::OPT_PREFIX_KEY - -1002
Memcached::OPT_HASH - 2
Memcached::HASH_DEFAULT - 0
Memcached::HASH_MD5 - 1
Memcached::HASH_CRC - 2
Memcached::HASH_FNV1_64 - 3
Memcached::HASH_FNV1A_64 - 4
Memcached::HASH_FNV1_32 - 5
Memcached::HASH_FNV1A_32 - 6
Memcached::HASH_HSIEH - 7
Memcached::HASH_MURMUR - 8
Memcached::OPT_DISTRIBUTION - 9
Memcached::DISTRIBUTION_MODULA - 0
Memcached::DISTRIBUTION_CONSISTENT - 1
Memcached::OPT_LIBKETAMA_COMPATIBLE - 16
Memcached::OPT_BUFFER_WRITES - 10
Memcached::OPT_BINARY_PROTOCOL - 18
Memcached::OPT_NO_BLOCK - 0
Memcached::OPT_TCP_NODELAY - 1
Memcached::OPT_SOCKET_SEND_SIZE - 4
Memcached::OPT_SOCKET_RECV_SIZE - 5
Memcached::OPT_CONNECT_TIMEOUT - 14
Memcached::OPT_RETRY_TIMEOUT - 15
Memcached::OPT_SEND_TIMEOUT - 19
Memcached::OPT_RECV_TIMEOUT - 15
Memcached::OPT_POLL_TIMEOUT - 8
Memcached::OPT_CACHE_LOOKUPS - 6
Memcached::OPT_SERVER_FAILURE_LIMIT - 21
Memcached::HAVE_IGBINARY - #&UNDEFINED;#
Memcached::HAVE_JSON - #&UNDEFINED;#
Memcached::GET_PRESERVE_ORDER - 1
Memcached::RES_SUCCESS - 0
Memcached::RES_FAILURE - 1
Memcached::RES_HOST_LOOKUP_FAILURE - 2
Memcached::RES_UNKNOWN_READ_FAILURE - 7
Memcached::RES_PROTOCOL_ERROR - 8
Memcached::RES_CLIENT_ERROR - 9
Memcached::RES_SERVER_ERROR - 10
Memcached::RES_WRITE_FAILURE - 5
Memcached::RES_DATA_EXISTS - 12
Memcached::RES_NOTSTORED - 14
Memcached::RES_NOTFOUND - 16
Memcached::RES_PARTIAL_READ - 18
Memcached::RES_SOME_ERRORS - 19
Memcached::RES_NO_SERVERS - 20
Memcached::RES_END - 21
Memcached::RES_ERRNO - 26
Memcached::RES_BUFFERED - 32
Memcached::RES_TIMEOUT - 31
Memcached::RES_BAD_KEY_PROVIDED - 33
Memcached::RES_CONNECTION_SOCKET_CREATE_FAILURE - 11
Memcached::RES_PAYLOAD_FAILURE - -1001

$memcachedConstants = array(
0 => 'Memcached::OPT_COMPRESSION',
1 => 'Memcached::OPT_SERIALIZER',
2 => 'Memcached::SERIALIZER_PHP',
6 => 'Memcached::SERIALIZER_IGBINARY',
7 => 'Memcached::SERIALIZER_JSON',
8 => 'Memcached::OPT_PREFIX_KEY',
9 => 'Memcached::OPT_HASH',
11 => 'Memcached::HASH_DEFAULT',
12 => 'Memcached::HASH_DEFAULT',
13 => 'Memcached::HASH_MD5',
14 => 'Memcached::HASH_CRC',
15 => 'Memcached::HASH_FNV1_64',
16 => 'Memcached::HASH_FNV1A_64',
17 => 'Memcached::HASH_FNV1_32',
18 => 'Memcached::HASH_FNV1A_32',
19 => 'Memcached::HASH_HSIEH',
20 => 'Memcached::HASH_MURMUR',
21 => 'Memcached::OPT_DISTRIBUTION',
22 => 'Memcached::DISTRIBUTION_MODULA',
23 => 'Memcached::DISTRIBUTION_MODULA',
24 => 'Memcached::DISTRIBUTION_CONSISTENT',
25 => 'Memcached::OPT_LIBKETAMA_COMPATIBLE',
26 => 'Memcached::OPT_BUFFER_WRITES',
27 => 'Memcached::OPT_BINARY_PROTOCOL',
28 => 'Memcached::OPT_NO_BLOCK',
29 => 'Memcached::OPT_TCP_NODELAY',
30 => 'Memcached::OPT_SOCKET_SEND_SIZE',
31 => 'Memcached::OPT_SOCKET_RECV_SIZE',
32 => 'Memcached::OPT_CONNECT_TIMEOUT',
33 => 'Memcached::OPT_RETRY_TIMEOUT',
34 => 'Memcached::OPT_SEND_TIMEOUT',
35 => 'Memcached::OPT_RECV_TIMEOUT',
36 => 'Memcached::OPT_POLL_TIMEOUT',
37 => 'Memcached::OPT_CACHE_LOOKUPS',
38 => 'Memcached::OPT_SERVER_FAILURE_LIMIT',
39 => 'Memcached::HAVE_IGBINARY',
40 => 'Memcached::HAVE_JSON',
41 => 'Memcached::GET_PRESERVE_ORDER',
44 => 'Memcached::RES_SUCCESS',
45 => 'Memcached::RES_FAILURE',
46 => 'Memcached::RES_HOST_LOOKUP_FAILURE',
47 => 'Memcached::RES_UNKNOWN_READ_FAILURE',
48 => 'Memcached::RES_PROTOCOL_ERROR',
49 => 'Memcached::RES_CLIENT_ERROR',
50 => 'Memcached::RES_SERVER_ERROR',
51 => 'Memcached::RES_WRITE_FAILURE',
52 => 'Memcached::RES_DATA_EXISTS',
53 => 'Memcached::RES_NOTSTORED',
54 => 'Memcached::RES_NOTFOUND',
55 => 'Memcached::RES_PARTIAL_READ',
56 => 'Memcached::RES_SOME_ERRORS',
57 => 'Memcached::RES_NO_SERVERS',
58 => 'Memcached::RES_END',
59 => 'Memcached::RES_ERRNO',
60 => 'Memcached::RES_BUFFERED',
61 => 'Memcached::RES_TIMEOUT',
62 => 'Memcached::RES_BAD_KEY_PROVIDED',
63 => 'Memcached::RES_CONNECTION_SOCKET_CREATE_FAILURE',
64 => 'Memcached::RES_PAYLOAD_FAILURE'
);

foreach($memcachedConstants as $constant)
{
echo $constant . " - " . (defined($constant) ? constant($constant) : "#&UNDEFINED;#") . "
\n";
}

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I had exactly this problem the other day, getting a status code back and not knowing how to tell which constant that related to. I'll be using this post for reference in future, thanks

#1 LornaJane (Homepage) on 2009-06-19 04:17 (Reply)

Thanks for posting this, I was having a hell of a time finding out what #s corresponded to what constants. For some reason I couldn't find it in the source either. Where did you get these from?

#2 Jay Paroline (Homepage) on 2010-07-29 16:25 (Reply)

I scraped the content off the doc page, then iterated over everything and echo'd them out.

It was a lame way to do it, so clearly I needed to blog about it to the world

Andrei added a new function to a recent release getresultmessage() which should give you a string rather than the number.

#2.1 Paul Reinheimer (Homepage) on 2010-07-29 16:53 (Reply)

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Hi, I'm Paul Reinheimer a developer working with PHP. I wrote a book titled Professional Web APIs with PHP back in 2006, and am currently a contractor, working primarily in Biomedical Informatics.

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Memcached Constants - Lame Code

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Thursday, June 18. 2009

Memcached Constants - Lame Code

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