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6
makr at makrit dot net
10 years 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
10 years 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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