| protected findAttribute ( string | integer $attr, string $compare = 'total', boolean $case_sensitive = false ) : array | ||
| $attr | string | integer | Negative int to count from end |
| $compare | string | "namespace", "name" or "total" |
| $case_sensitive | boolean | Compare with case sensitivity |
| return | array | array('ns', 'attr', 'ns:attr', index) |
protected function findAttribute($attr, $compare = 'total', $case_sensitive = false)
{
if (is_int($attr)) {
if ($attr < 0) {
$attr += count($this->attributes);
}
$keys = array_keys($this->attributes);
return $this->findAttribute($keys[$attr], 'total', true);
} else {
if ($compare === 'total') {
$b = explode(':', $attr, 2);
if ($case_sensitive) {
$t =& $this->attributes;
} else {
$t = array_change_key_case($this->attributes);
$attr = strtolower($attr);
}
if (isset($t[$attr])) {
$index = 0;
foreach ($this->attributes as $a => $v) {
if ($v === $t[$attr] && strcasecmp($a, $attr) === 0) {
$attr = $a;
$b = explode(':', $attr, 2);
break;
}
++$index;
}
if (empty($b[1])) {
return array(array('', $b[0], $attr, $index));
} else {
return array(array($b[0], $b[1], $attr, $index));
}
} else {
return false;
}
} else {
if ($this->attributes_ns === null) {
$index = 0;
foreach ($this->attributes as $a => $v) {
$b = explode(':', $a, 2);
if (empty($b[1])) {
$this->attributes_ns[$b[0]][] = array('', $b[0], $a, $index);
} else {
$this->attributes_ns[$b[1]][] = array($b[0], $b[1], $a, $index);
}
++$index;
}
}
if ($case_sensitive) {
$t =& $this->attributes_ns;
} else {
$t = array_change_key_case($this->attributes_ns);
$attr = strtolower($attr);
}
if ($compare === 'namespace') {
$res = array();
foreach ($t as $ar) {
foreach ($ar as $a) {
if ($a[0] === $attr) {
$res[] = $a;
}
}
}
return $res;
} elseif ($compare === 'name') {
return isset($t[$attr]) ? $t[$attr] : false;
} else {
trigger_error('Unknown comparison mode');
}
}
}
}