(a == b || fabs(a-b)/max(fabs(a), fabs(b)))
<input type="checkbox" name="taxi" class="radio-a" />
<input type="checkbox" name="ucheb" class="radio-a" />
<script type="text/javascript"><!--//
(function (){
var radioA = document.getElementsByClassName('radio-a');
for (var i=0; i<radioA.length; ++i){
radioA[i].addEventListener('click', function(){
if (this.checked){
for (var j=0; j<radioA.length; ++j){
radioA[j].checked = false;
}
this.checked = true;
}
}, false);
}
})();
//-->
</script>
var sc = document.createElement('script');
sc.src = 'http://site.ru/my1.js?v='+Math.random();
/*тут дальше что-то вроде создания невидимого iframe и помещение туда созданного объекта*/
function flat2tree(&$flat){
$tree = array();
$nodeMap = array();
$N = (is_array($flat)) ? count($flat) : 0;
for ($i=0; $i<$N; ++$i){
$node =& $flat[$i];
if (isset($nodeMap[$node['pid']])){
$parent =& $nodeMap[$node['pid']];
if (!isset($parent['child']) || !is_array($parent['child'])){
$parent['child'] = array();
}
$parent['child'][] = $node;
$nodeMap[$node['id']] =& $parent['child'][count($parent['child']) - 1];
}
else{
$tree[] = $node;
$nodeMap[$node['id']] =& $tree[count($tree) - 1];
}
}
return $tree;
}
$flat = array(
array('id' => 1, 'pid' => null, 'name' => 'ipsum'),
array('id' => 2, 'pid' => 1, 'name' => 'ipsum1'),
array('id' => 3, 'pid' => 1, 'name' => 'ipsum2'),
array('id' => 4, 'pid' => 2, 'name' => 'ipsum3'),
array('id' => 5, 'pid' => 3, 'name' => 'ipsum4'),
array('id' => 6, 'pid' => null, 'name' => 'ipsum5')
);
$tree = flat2tree($flat);
var_dump($tree);
echo json_encode($tree);
function flat2tree(&$flat){
$tree = array();
$path = array();
$pathLength = 0;
$N = (is_array($flat)) ? count($flat) : 0;
for ($i=0; $i<$N; ++$i){
$node =& $flat[$i];
for(; $pathLength && $path[$pathLength-1]['id'] != $node['pid']; --$pathLength);
if ($pathLength){
$parent =& $path[$pathLength-1];
if (!isset($parent['child']) || !is_array($parent['child'])){
$parent['child'] = array();
}
$parent['child'][] = $node;
$path[$pathLength++] =& $parent['child'][count($parent['child']) - 1];
}
else{
$tree[] = $node;
$path[$pathLength++] =& $tree[count($tree) - 1];
}
}
return $tree;
}
$flat = array(
array('id' => 1, 'pid' => null, 'name' => 'ipsum'),
array('id' => 2, 'pid' => 1, 'name' => 'ipsum1'),
array('id' => 4, 'pid' => 2, 'name' => 'ipsum3'),
array('id' => 3, 'pid' => 1, 'name' => 'ipsum2'),
array('id' => 5, 'pid' => 3, 'name' => 'ipsum4'),
array('id' => 6, 'pid' => null, 'name' => 'ipsum5')
);
$tree = flat2tree($flat);
var_dump($tree);
echo json_encode($tree);