33 'em' =>
true,
'ex' =>
true,
'px' =>
true,
'in' =>
true,
34 'cm' =>
true,
'mm' =>
true,
'pt' =>
true,
'pc' =>
true
43 $this->n = (string)
$n;
44 $this->unit = $u !==
false ? (string) $u :
false;
52 public static function make($s)
57 $n_length = strspn($s,
'1234567890.+-');
58 $n = substr($s, 0, $n_length);
59 $unit = substr($s, $n_length);
73 if ($this->n ===
'+0' || $this->n ===
'-0') {
76 if ($this->n ===
'0' && $this->unit ===
false) {
79 if (!ctype_lower($this->unit)) {
80 $this->unit = strtolower($this->unit);
87 $result = $def->validate($this->n,
false,
false);
149 if (
$l->unit !== $this->unit) {
151 $l = $converter->convert(
$l, $this->unit);
156 return $this->n -
$l->n;
Validates a number as defined by the CSS spec.
Represents a measurable length, with a string numeric magnitude and a unit.
static $allowedUnits
Array Lookup array of units recognized by CSS 2.1 @type array.
validate()
Validates the number and unit.
$isValid
Whether or not this length is valid.
compareTo($l)
Compares two lengths, and returns 1 if greater, -1 if less and 0 if equal.
getUnit()
Retrieves string unit.
getN()
Retrieves string numeric magnitude.
__construct($n='0', $u=false)
$n
String numeric magnitude.
toString()
Returns string representation of number.
isValid()
Returns true if this length unit is valid.
Class for converting between different unit-lengths as specified by CSS.