php check if element in array code example

Example 1: check if array has value php

$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

Example 2: php in array

$colors = array("red", "blue", "green"); 
 
if (in_array("red", $colors)) { 
	echo "found red in array"; 
}

Example 3: php value in array

in_array ( mixed $needle , array $haystack , bool $strict = false ) : bool

Example 4: check null in_array php

if (!empty($data_days) && in_array(1, $data_days, true)){ // use numeric value 1, not string