Analysis of the difference between instanceof and is_a() in php_PHP tutorial

Analysis of the difference between instanceof and is_a() in php

Generally speaking, the functions of instanceof and is_a() in php are the same. The difference is due to different versions of PHP. The PHP version has abandoned is_a(). Let’s analyze it in detail.

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

Return TRUE if yes, 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() is restored.

Summary:

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

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

http://www.bkjia.com/PHPjc/964006.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/964006.htmlTechArticleAnalysis of the difference between instanceof and is_a() in php In general, 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(). Below we...