creating a key

[Paras]

I found a sample code online which showed me how I can use memcached
with php. Here is the code.

//write query
$sql = "select * from pages where page_id=1";
 
//create an index key for memcache
$key = md5('query'.$sql);

Can anyone tell me what the line after the second comment means ?



Thanks,
Paras