Is it possible to use is_array to detect empty arrays in PHP?

Using is_array in php to detect empty arrays can pass. The function of the is_array() function is to detect whether the variable is an array. The syntax is "is_array($var)". As long as the variable "$var" is an array type, it can pass, regardless of whether the array contains a value; if the detected variable If "$var" is an array type, TRUE is returned, otherwise FALSE is returned.

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, DELL G3 computer

Using is_array to detect the empty array can pass .

<?php
$a = array();
var_dump($a);
var_dump(is_array($a));
?>

In php, the is_array($var) function is used to detect whether the variable is an array (whether it is an array type ), as long as the variable $var is an array type, it can pass, regardless of whether the array contains a value.

The empty array is also an array type, so using is_array to detect the empty array can pass.

If the detected variable is an array type, return TRUE (indicating pass), otherwise return FALSE.

<?php
$a = array();
$b = array(1,2,3);
$c = 123;
var_dump($a);
var_dump(is_array($a));

var_dump($b);
var_dump(is_array($b));

var_dump($c);
var_dump(is_array($c));
?>

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