<?php
if( !defined( 'ABSPATH') ) exit();
class RevSliderMemoryUsageInformation
{
private $real_usage;
private $statistics = array();
// Memory Usage Information constructor
public function __construct($real_usage = false)
{
$this->real_usage = $real_usage;
}
// Returns current memory usage with or without styling
public function getCurrentMemoryUsage($with_style = true)
{
$mem = memory_get_usage($this->real_usage);
return ($with_style) ? $this->byteFormat($mem) : $mem;
}
// Returns peak of memory usage
public function getPeakMemoryUsage($with_style = true)
{
$mem = memory_get_peak_usage($this->real_usage);
return ($with_style) ? $this->byteFormat($mem) : $mem;
}
// Set memory usage with info
public function setMemoryUsage($info = '')
{
$this->statistics[] = array(
'time' => time(), //microtime(),
'info' => $info,
'memory_usage' => $this->getCurrentMemoryUsage());
}
// Print all memory usage info and memory limit and
public function printMemoryUsageInformation()
{
//return true;
echo '<pre>';
foreach ($this->statistics as $satistic)
{
echo "Time: " . $satistic['time'] .
" | Memory Usage: " . $satistic['memory_usage'] .
" | Info: " . $satistic['info'];
echo "\n";
}
echo "\n\n";
echo "Peak of memory usage: " . $this->getPeakMemoryUsage();
echo "\n\n";
echo '</pre>';
}
// Set start with default info or some custom info
public function setStart($info = 'Initial Memory Usage')
{
$this->setMemoryUsage($info);
}
// Set end with default info or some custom info
public function setEnd($info = 'Memory Usage at the End')
{
$this->setMemoryUsage($info);
}
// Byte formatting
private function byteFormat($bytes, $unit = "", $decimals = 2)
{
$units = array('B' => 0, 'KB' => 1, 'MB' => 2, 'GB' => 3, 'TB' => 4,
'PB' => 5, 'EB' => 6, 'ZB' => 7, 'YB' => 8);
$value = 0;
if ($bytes > 0)
{
// Generate automatic prefix by bytes
// If wrong prefix given
if (!array_key_exists($unit, $units))
{
$pow = floor(log($bytes) / log(1024));
$unit = array_search($pow, $units);
}
// Calculate byte value by prefix
$value = ($bytes / pow(1024, floor($units[$unit])));
}
// If decimals is not numeric or decimals is less than 0
// then set default value
if (!is_numeric($decimals) || $decimals < 0)
{
$decimals = 2;
}
// Format output
return sprintf('%.' . $decimals . 'f ' . $unit, $value);
}
}