Memcached How to find keys by pattern?

Good morning | day | evening | night,% username%!

When using Memcached , sometimes questions may arise: “But how to see all Memcached keys?” or "How to find all keys by mask" * "or" sql_ * "?"
Then the manuals open and the search for such a function begins , but, unfortunately, it doesn’t
turn out :-( Then Google starts ... And there isn’t much there :-(
And then the search for undocumented features starts :-) and then “Hurray! Found!”

This code just adds such a simple function as viewing keys, and returns them as an array, with which you can then do whatever you like :-)

1. /**
2.  * getKeys()
3.  *
4.  *  get all keys from Memcache
5.  *
6.  * @author         Roman Kutsy
7.  * @version        2.0.20090708
8.  *
9.  * @return    array     $keys
10.  */    
11. function getKeys()
12. { 
13.     ///////////////////////////////////////////////////////////////////////
14.  
15.     $s = @fsockopen('127.0.0.1',11211);
16.          
17.     // SLABS //////////////////////////////////////////////////////////////
18.     
19.     fwrite($s, 'stats slabs'."\r\n");
20.          
21.     $slabs = array();
22.     
23.     while( !feof($s) )
24.     {
25.         $temp = fgets($s, 256);
26.         
27.         preg_match('/^STAT\s([0-9]*)(.*)/', $temp, $slab_temp);
28.         
29.         if(isset($slab_temp['1']) && strlen($slab_temp['1'])>0)
30.         {
31.             $slabs[] = $slab_temp['1'];
32.         }            
33.         
34.         unset($slab_temp);
35.  
36.         if(trim($temp)=='END')
37.         {
38.             break;
39.         }
40.     }
41.  
42.     unset($temp);
43.  
44.     // ITEMS //////////////////////////////////////////////////////////////
45.     
46.     fwrite($s, 'stats items'."\r\n");
47.          
48.     $items = array();
49.     
50.     while( !feof($s) )
51.     {
52.         $temp = fgets($s, 256);
53.         
54.         preg_match('/^STAT\sitems\:([0-9]*)(.*)/', $temp, $item_temp);
55.         
56.         if(isset($item_temp['1']) && strlen($item_temp['1'])>0)
57.         {
58.             $items[] = $item_temp['1'];
59.         }            
60.         
61.         unset($item_temp);
62.  
63.         if(trim($temp)=='END')
64.         {
65.             break;
66.         }
67.     }
68.  
69.     unset($temp);
70.     
71.     $slabs = array_unique($slabs);
72.     $items = array_unique($items);        
73.  
74.     // CACHEDUMP //////////////////////////////////////////////////////////
75.  
76.     $keys = array();            
77.         
78.     foreach($slabs as &$slab)
79.     {
80.         foreach($items as &$item)
81.         {
82.             fwrite($s, 'stats cachedump '.$slab.' '.$item."\r\n"); 
83.             
84.             while( !feof($s) )
85.             {
86.                 $temp = fgets($s, 256);
87.  
88.                 // ITEM cd3aec8b1dd7ef828267408e68b6d961:user_1_status [1 b; 1247043297 s]
89.                 // or
90.                 // ITEM sql_custom_photos_showphoto_11 [1379 b; 1247064083 s]
91.  
92.                 preg_match('/^ITEM\s([a-f0-9]{32}\:)?([A-Za-z0-9\_\-\.]*)\s\[[0-9]*\sb\;\s([0-9]*)\s.*/', $temp, $key_temp);
93.  
94.                 if(isset($key_temp['2']) && strlen($key_temp['2'])>0)
95.                 {         
96.                   $keys[] = $key_temp['2'];
97.                 }            
98.                 
99.                 unset($key_temp);
100.             
101.                 if(trim($temp)=='END')
102.                 {
103.                     break;
104.                 }                
105.             }            
106.         }
107.     }
108.     
109.     unset($temp,$slabs,$items);
110.     
111.     fclose($s);
112.     
113.     ///////////////////////////////////////////////////////////////////////        
114.          
115.     $keys_temp = array_unique($keys);
116.     unset($keys);        
117.     asort($keys_temp);
118.     
119.     $keys = array();
120.     foreach($keys_temp as &$k)
121.     {
122.         $keys[] = $k;
123.     }
124.     
125.     return $keys;        
126.     
127.     ///////////////////////////////////////////////////////////////////////        
128. }

Good luck,% username%!

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