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<?php
class Misc
{
/**
* Returns human size
*
* @param float $filesize File size
* @param int $precision Number of decimals
* @return string Human size
*/
public static function getSize($filesize, $precision = 2)
{
$units = array('', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y');
foreach ($units as $idUnit => $unit)
{
if ($filesize > 1024)
$filesize /= 1024;
else
break;
}
return round($filesize, $precision).' '.$units[$idUnit].'B';
}
/**
* Returns hostname
*
* @return string Hostname
*/
public static function getHostname()
{
return php_uname('n');
}
/**
* Returns CPU cores number
*
* @return int Number of cores
*/
public static function getCpuCoresNumber()
{
if (!($num_cores = shell_exec('/bin/grep -c ^processor /proc/cpuinfo')))
{
if (!($num_cores = trim(shell_exec('/usr/bin/nproc'))))
{
$num_cores = 1;
}
}
if ((int)$num_cores <= 0)
$num_cores = 1;
return (int)$num_cores;
}
/**
* Returns server IP
*
* @return string Server local IP
*/
public static function getLanIp()
{
return $_SERVER['SERVER_ADDR'];
}
/**
* Seconds to human readable text
* Eg: for 36545627 seconds => 1 year, 57 days, 23 hours and 33 minutes
*
* @return string Text
*/
public static function getHumanTime($seconds)
{
$units = array(
'year' => 365*86400,
'day' => 86400,
'hour' => 3600,
'minute' => 60,
// 'second' => 1,
);
$parts = array();
foreach ($units as $name => $divisor)
{
$div = floor($seconds / $divisor);
if ($div == 0)
continue;
else
if ($div == 1)
$parts[] = $div.' '.$name;
else
$parts[] = $div.' '.$name.'s';
$seconds %= $divisor;
}
$last = array_pop($parts);
if (empty($parts))
return $last;
else
return join(', ', $parts).' and '.$last;
}
/**
* Returns a command that exists in the system among $cmds
*
* @param array $cmds List of commands
* @param string $args List of arguments (optional)
* @param bool $returnWithArgs If true, returns command with the arguments
* @return string Command
*/
public static function whichCommand($cmds, $args = '', $returnWithArgs = true)
{
$return = '';
foreach ($cmds as $cmd)
{
if (trim(shell_exec($cmd.' 2>/dev/null '.$args)) != '')
{
$return = $cmd;
if ($returnWithArgs)
$return .= $args;
break;
}
}
return $return;
}
/**
* Allows to pluralize a word based on a number
* Ex : echo 'mot'.Misc::pluralize(5); ==> prints mots
* Ex : echo 'cheva'.Misc::pluralize(5, 'ux', 'l'); ==> prints chevaux
* Ex : echo 'cheva'.Misc::pluralize(1, 'ux', 'l'); ==> prints cheval
*
* @param int $nb Number
* @param string $plural String for plural word
* @param string $singular String for singular word
* @return string String pluralized
*/
public static function pluralize($nb, $plural = 's', $singular = '')
{
return $nb > 1 ? $plural : $singular;
}
/**
* Checks if a socket is open
*
* @param string $host Host to check
* @param int $port Port number
* @param string $protocol tcp, udp or unix
* @param integer $timeout Timeout
* @return bool True if the port is open else false
*/
public static function socketAvailable($host, $port, $protocol, $timeout = 3)
{
if ($protocol == 'tcp')
{
$handle = @fsockopen($host, $port, $errno, $errstr, $timeout);
if (!$handle)
{
return false;
}
else
{
fclose($handle);
return true;
}
}
elseif ($protocol == 'udp')
{
$handle = @fsockopen('udp://'.$host, $port, $errno, $errstr, $timeout);
socket_set_timeout($handle, $timeout);
$write = fwrite($handle, 'x00');
if ($write === false)
{
return false;
}
else
{
$startTime = time();
$header = fread($handle, 1);
$endTime = time();
$timeDiff = $endTime - $startTime;
fclose($handle);
if ($timeDiff >= $timeout)
return true;
else
return false;
}
}
elseif ($protocol == 'unix')
{
$handle = @fsockopen('unix://'.$host, -1, $errno, $errstr, $timeout);
if (!$handle)
{
return false;
}
else
{
fclose($handle);
return true;
}
}
else {
throw new Exception('Invalid protocol: ' . $protocol);
}
return false;
}
/**
* Checks if a Systemd service is active
*
* @param string $service Service to check
* @return bool True if the service is active else false
*/
public static function systemdServiceActive($service) {
exec('systemctl status ' . $service, $_out, $ret);
return $ret;
}
}
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