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<?php
/**
*
* @package phpBB
* @copyright (c) 2011 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
namespace phpbb\php;
/**
* Wrapper class for ini_get function.
*
* Provides easier handling of the different interpretations of ini values.
*
* @package phpBB
*/
class ini
{
/**
* Simple wrapper for ini_get()
* See http://php.net/manual/en/function.ini-get.php
*
* @param string $varname The configuration option name.
* @return bool|string False if configuration option does not exist,
* the configuration option value (string) otherwise.
*/
public function get($varname)
{
return ini_get($varname);
}
/**
* Gets the configuration option value as a trimmed string.
*
* @param string $varname The configuration option name.
* @return bool|string False if configuration option does not exist,
* the configuration option value (string) otherwise.
*/
public function get_string($varname)
{
$value = $this->get($varname);
if ($value === false)
{
return false;
}
return trim($value);
}
/**
* Gets configuration option value as a boolean.
* Interprets the string value 'off' as false.
*
* @param string $varname The configuration option name.
* @return bool False if configuration option does not exist.
* False if configuration option is disabled.
* True otherwise.
*/
public function get_bool($varname)
{
$value = $this->get_string($varname);
if (empty($value) || strtolower($value) == 'off')
{
return false;
}
return true;
}
/**
* Gets configuration option value as an integer.
*
* @param string $varname The configuration option name.
* @return bool|int False if configuration option does not exist,
* false if configuration option value is not numeric,
* the configuration option value (integer) otherwise.
*/
public function get_int($varname)
{
$value = $this->get_string($varname);
if (!is_numeric($value))
{
return false;
}
return (int) $value;
}
/**
* Gets configuration option value as a float.
*
* @param string $varname The configuration option name.
* @return bool|float False if configuration option does not exist,
* false if configuration option value is not numeric,
* the configuration option value (float) otherwise.
*/
public function get_float($varname)
{
$value = $this->get_string($varname);
if (!is_numeric($value))
{
return false;
}
return (float) $value;
}
/**
* Gets configuration option value in bytes.
* Converts strings like '128M' to bytes (integer or float).
*
* @param string $varname The configuration option name.
* @return bool|int|float False if configuration option does not exist,
* false if configuration option value is not well-formed,
* the configuration option value otherwise.
*/
public function get_bytes($varname)
{
$value = $this->get_string($varname);
if ($value === false)
{
return false;
}
if (is_numeric($value))
{
// Already in bytes.
return phpbb_to_numeric($value);
}
else if (strlen($value) < 2)
{
// Single character.
return false;
}
else if (strlen($value) < 3 && $value[0] === '-')
{
// Two characters but the first one is a minus.
return false;
}
$value_lower = strtolower($value);
$value_numeric = phpbb_to_numeric($value);
switch ($value_lower[strlen($value_lower) - 1])
{
case 'g':
$value_numeric *= 1024;
case 'm':
$value_numeric *= 1024;
case 'k':
$value_numeric *= 1024;
break;
default:
// It's not already in bytes (and thus numeric)
// and does not carry a unit.
return false;
}
return $value_numeric;
}
}
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