DELETE FROM pos WHERE num < 10000?num::integer < 10000. 
.quadmenu-item {
background-color: #000;
-webkit-transition: background-color 0ms linear;
transition: background-color 0ms linear;
-webkit-transition-delay: 5s;
transition-delay: 5s;
}
.quadmenu-item:hover {
background-color: #f00;
-webkit-transition-delay: 0s;
transition-delay: 0s;
}
$cs = array_key_exists("Counter-Strike: Global Offensive",$json);
$pu = array_key_exists("PLAYERUNKNOWN'S BATTLEGROUNDS",$json);
if ($cs && $pu) $price = 85;
elseif ($cs) $price = 60;
elseif ($pu) $price = 75;
/^((\+7|7|8)+([0-9]){10})$/gm 
echo "заказ".$_POST['n'];echo $mergedDataFromDB;, то есть просто ее вывести. Со стороны аякс запроса данные выведенные в стандартный оутпут будут подхвачены в виде переменной data, прописанной в колбэк функции аякс запроса. 
$result = [];
foreach ($arr as $key => $values) {
foreach ($values as $index => $val) {
$result[$index][$key] = $val;
}
}
var elements = document.querySelectorAll('.someElement');
var prevElement;
[].forEach.call(elements, function(element) {
element.addEventListener('click', function(e) {
var currentElement = e.сurrentTarget;
if (/* some condition with currentElement and prevElement */) {
// do something
}
prevElement = currentElement;
});
});const id = arr[0] && arr[0].id;const first = arr[0] || {}; // const [ first = {} ] = arr;
const { id, name } = first;const first = arr[0];
if (!first) return null;
const { id, name } = first;