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: in_array php
<?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!!!";
}
?>
Example 4: in_array php
<?php
$os = array("Mac", "NT", "Irix", "Linux");
if (in_array("Irix", $os)) {
echo "Existe Irix";
}
if (in_array("mac", $os)) {
echo "Existe mac";
}
?>
Example 5: in array php
// Syntax:
in_array ( mixed $needle , array $haystack , bool $strict = false ) : bool
// Example:
$fruits = array('apple', 'banana', 'orange');
in_array('apple', $fruits); // true
in_array('mango', $fruits); // false
Example 6: check null in_array php
if (!empty($data_days) && in_array(1, $data_days, true)){ // use numeric value 1, not string