PHP Salt


A little dash of PHP... my collection of php functions

Version: 2.30.2
Last Build: September 02, 2021 09:55am (PST)

Main Menu

Home

Get PHP Salt


The Functions

array
db
file
graph
html
mail
math
misc
mobile
script
string
system
time
web
psCacheRead()
Reads Caches data from file


Description:

These functions are used to cache data to a file
I use this when calling another function takes a long time, and has to parse
a lot of data, that seldom changes

Cache time is on the read function, this allow cache time changes without affecting
files already written.




Usage:

$mixed = psCacheRead($cFile, $cTime=3600)
$mixed = cache file data, or false if cache data expired or invalid
$cFile = Name of file to save, ex: /tmp/data.cache
$cTime = Cache time in seconds, default = 1hr



Example:

	$wFile = "test.cache";
$ary = psCacheRead($wFile);

if ($ary == false)
{
print"* Cache Expired\r\n";

$d['gallardo'] = "green";
$d['yellow'] = "yellow";

psCacheWrite($d,$wFile);
}





Code:

function psCacheRead($cFile, $cTime=3600)
{
//print"* psCacheRead()\r\n";
$res = false;

if (file_exists($cFile) == true)
{
//print"* psCacheRead(file_exists)\r\n";
$cache = unserialize(psFileGetContents($cFile));
// is it expired?
$now = time();
$expTime = $cache['ts'] + $cTime;
if ( $expTime > $now )
{
//print"* psCacheRead(cache_valid)\r\n";
if ( $cache['z'] < 1 )
{
$res = $cache['data'];
}
else
{
$res = unserialize(gzuncompress($cache['data']));
}

}
}

return $res;
}




Changlelog:

11/23/2018 - added support for compressed data


See Also

  psCacheWrite()
And a shot out to:

PHP - php.net
Fedora Server - getfedora.com
Shameless ads to pay for site