array exists php code example
Example 1: php key exists
$fruits = ['apple', 'pear', 'banana'];
if (array_key_exists("banana", $fruits)) {
}
$exists = array_key_exists("peach", $fruits);
Example 2: php array index exists
$fruits = ['apple', 'pear', 'banana'];
if (array_key_exists("banana", $fruits)) {
}
$exists = array_key_exists("peach", $fruits);
return array_key_exists("pineapple", $fruits);
Example 3: check if array has value php
$myArr = [38, 18, 10, 7, "15"];
echo in_array(10, $myArr);
echo in_array(19, $myArr);
echo in_array("18", $myArr);
echo in_array("18", $myArr, true);
Example 4: 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 5: check if array value exists in another array php
$result = !empty(array_intersect($people, $criminals));
Example 6: 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";
}
?>