PHP : Check if variable is a numeric array

In this tutorial learn how to Check if variable is a numeric array in php using a is_array() and array_keys() method - programming technology world

function is_numeric_array($var): bool
{
    if (!is_array($var)) {
        return false;
    }
    
    $keys = array_keys($var);
    return ($keys === array_keys($keys));
}

TUTORIAL

<?php 

/**
 * Check if variable is a numeric array.
 *
 * @param array|mixed $var
 * @return bool
 */
 
$b=array(1,2);
 
function is_numeric_array($var): bool
{
    if (!is_array($var)) {
        return false;
    }
    
    $keys = array_keys($var);
    return ($keys === array_keys($keys));
}
var_dump(is_numeric_array($b));

OUTPUT DEMO

bool(true)