Detailed explanation of comparison between instanceof and is_a() in php

Generally speaking, the functions of instanceof and is_a() in PHP are the same. The difference is that due to different PHP versions, some PHP versions have abandoned is_a(). So in this article, let’s analyze the difference between instanceof and is_a() in PHP.

The instanceof operator and the is_a() method both determine whether an object belongs to the class or the class is the parent class of the object (used to determine whether a PHP variable belongs to an instance of a certain class)

Returns TRUE if yes, returns FALSE if not

Difference:

The instanceof operator was introduced in PHP 5. Before this, is_a() was used, but later is_a() was deprecated and replaced by instanceof.

Note:

Starting from PHP 5.3.0, the use of is_a() has been restored.

Summary:

Now PHP service environments generally use PHP5.0+, so try to use instanceof instead of is_a()

To sum up, if If you don’t know your server environment, it is recommended that you use instanceof to avoid unnecessary trouble

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