check if something is an array php 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 isarray

<?php
$yes = array('this', 'is', 'an array');

echo is_array($yes) ? 'Array' : 'not an Array';
echo "\n";

$no = 'this is a string';

echo is_array($no) ? 'Array' : 'not an Array';
?>

Example 3: php check if item in array

$allowedFileType = ['application/vnd.ms-excel','text/xls','text/xlsx','application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'];
  
if(in_array($_FILES["file"]["type"],$allowedFileType))