$myArr = [38, 18, 10, 7, "15"];
echo in_array(10, $myArr); // TRUE
echo in_array(19, $myArr); // TRUE
// Without strict check
echo in_array("18", $myArr); // TRUE
// With strict check
echo in_array("18", $myArr, true); // FALSE<?php
$os = array("Apple", "Banana", "Lemon");
if (in_array("Apple", $os)) {
echo "Yeah. Exist Apple";
}
if (!in_array("Buleberry", $os)) {
echo "Oh, Don't Exist Blueberry!!!";
}
?><?php
$os = array("Mac", "NT", "Irix", "Linux");
if (in_array("Irix", $os)) {
echo "Existe Irix";
}
if (in_array("mac", $os)) {
echo "Existe mac";
}
?>if (!empty($data_days) && in_array(1, $data_days, true)){ // use numeric value 1, not string