PHP 5.5.16 is released

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User Contributed Notes 2 notes

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3
makr at makrit dot net
1 year ago
shmop made simple:
$test=get_cache('test');
save_cache($test, 'test1', 600);

To save/get cache that easily just save this as cache.php or whatever you see fit:

<?php

function save_cache($data, $name, $timeout) {
   
// delete cache
   
$id=shmop_open(get_cache_id($name), "a", 0, 0);
   
shmop_delete($id);
   
shmop_close($id);
   
   
// get id for name of cache
   
$id=shmop_open(get_cache_id($name), "c", 0644, strlen(serialize($data)));
   
   
// return int for data size or boolean false for fail
   
if ($id) {
       
set_timeout($name, $timeout);
        return
shmop_write($id, serialize($data), 0);
    }
    else return
false;
}

function
get_cache($name) {
    if (!
check_timeout($name)) {
       
$id=shmop_open(get_cache_id($name), "a", 0, 0);

        if (
$id) $data=unserialize(shmop_read($id, 0, shmop_size($id)));
        else return
false;          // failed to load data

       
if ($data) {                // array retrieved
           
shmop_close();
            return
$data;
        }
        else return
false;          // failed to load data
   
}
    else return
false;              // data was expired
}

function
get_cache_id($name) {
   
// maintain list of caches here
   
$id=array(  'test1' => 1
               
'test2' => 2
               
);

    return
$id[$name];
}

function
set_timeout($name, $int) {
   
$timeout=new DateTime(date('Y-m-d H:i:s'));
   
date_add($timeout, date_interval_create_from_date_string("$int seconds"));
   
$timeout=date_format($timeout, 'YmdHis');

   
$id=shmop_open(100, "a", 0, 0);
    if (
$id) $tl=unserialize(shmop_read($id, 0, shmop_size($id)));
    else
$tl=array();
   
shmop_delete($id);
   
shmop_close($id);

   
$tl[$name]=$timeout;
   
$id=shmop_open(100, "c", 0644, strlen(serialize($tl)));
   
shmop_write($id, serialize($tl), 0);
}

function
check_timeout($name) {
   
$now=new DateTime(date('Y-m-d H:i:s'));
   
$now=date_format($now, 'YmdHis');

   
$id=shmop_open(100, "a", 0, 0);
    if (
$id) $tl=unserialize(shmop_read($id, 0, shmop_size($id)));
    else return
true;
   
shmop_close($id);

   
$timeout=$tl[$name];
    return (
intval($now)>intval($timeout));
}

?>
up
-1
mattcsl at gmail dot com
9 months ago
thankyou,

this function had a missing comma between test1 and test2 and is fixed below

function get_cache_id($name) {
    // maintain list of caches here
    $id=array(  'test1' => 1,
                'test2' => 2
                );

    return $id[$name];
}
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