PHP Class HTMLPurifier_UnitConverter, yii

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Protected Properties

Property	Type	Description
$internalPrecision		Bcmath precision for internal calculations.
$outputPrecision		Minimum bcmath precision for output.
$units		Units information array. Units are grouped into measuring systems (English, Metric), and are assigned an integer representing the conversion factor between that unit and the smallest unit in the system. Numeric indexes are actually magical constants that encode conversion data from one system to the next, with a O(n^2) constraint on memory (this is generally not a problem, since the number of measuring systems is small.)

Public Methods

Method	Description
__construct ( $output_precision = 4, $internal_precision = 10, $force_no_bcmath = false )
convert ( HTMLPurifier_Length $length, string $to_unit ) : HTMLPurifier_Length \| boolean	Converts a length object of one unit into another unit.
getSigFigs ( string $n ) : integer	Returns the number of significant figures in a string number.

Private Methods

Method	Description
add ( string $s1, string $s2, integer $scale ) : string	Adds two numbers, using arbitrary precision when available.
div ( string $s1, string $s2, integer $scale ) : string	Divides two numbers, using arbitrary precision when available.
mul ( string $s1, string $s2, integer $scale ) : string	Multiples two numbers, using arbitrary precision when available.
round ( float $n, integer $sigfigs ) : string	Rounds a number according to the number of sigfigs it should have, using arbitrary precision when available.
scale ( float $r, integer $scale ) : string	Scales a float to $scale digits right of decimal point, like BCMath.

Method Details

__construct() public method

public __construct ( $output_precision = 4, $internal_precision = 10, $force_no_bcmath = false )

convert() public method

Converts a length object of one unit into another unit.

public convert ( HTMLPurifier_Length $length, string $to_unit ) : HTMLPurifier_Length \| boolean
$length	HTMLPurifier_Length	Instance of HTMLPurifier_Length to convert. You must validate() it before passing it here!
$to_unit	string	Unit to convert to.
return	HTMLPurifier_Length \| boolean

getSigFigs() public method

Returns the number of significant figures in a string number.

public getSigFigs ( string $n ) : integer
$n	string	Decimal number
return	integer	number of sigfigs

Property Details

$internalPrecision protected_oe property

Bcmath precision for internal calculations.

protected $internalPrecision

$outputPrecision protected_oe property

Minimum bcmath precision for output.

protected $outputPrecision

$units protected_oe static_oe property

Units information array. Units are grouped into measuring systems (English, Metric), and are assigned an integer representing the conversion factor between that unit and the smallest unit in the system. Numeric indexes are actually magical constants that encode conversion data from one system to the next, with a O(n^2) constraint on memory (this is generally not a problem, since the number of measuring systems is small.)

protected static $units