How to check whether property exists in object or class in php

0 votes

I understand PHP does not have a pure object variable, but I want to check whether a property is in the given object or class.

$ob = (object) array('a' => 1, 'b' => 12); 

or

$ob = new stdClass;
$ob->a = 1;
$ob->b = 2;

In JS, I can write this to check if variable a exists in an object:

if ('a' in ob)

In PHP, can anything like this be done?

Oct 1, 2020 in PHP by kartik
• 37,520 points
6,288 views

1 answer to this question.

0 votes

Hello @kartik,

Using 

property_exists( mixed $class , string $property )

if (property_exists($ob, 'a')) 

isset( mixed $var [, mixed $... ] )

if (isset($ob->a))

isset() will return false if property is null

Hope it helps!!

ThanK You!!

answered Oct 1, 2020 by Niroj
• 82,880 points

Related Questions In PHP

0 votes
0 answers

How to check if a defined constant exists in PHP?

I am using fuelphp a PHP framework and I ...READ MORE

May 30, 2022 in PHP by Kichu
• 19,050 points
806 views
0 votes
1 answer

How to convert a string to JSON object in PHP?

Hello @kartik, it seems that your JSON is ...READ MORE

answered Oct 20, 2020 in PHP by Niroj
• 82,880 points
5,373 views
0 votes
1 answer

In PHP, how to detect the execution is from CLI mode or through browser ?

Hello @kartik, Use the php_sapi_name() function. if (php_sapi_name() == "cli") { ...READ MORE

answered Oct 22, 2020 in PHP by Niroj
• 82,880 points
1,370 views
0 votes
1 answer

How to check if a string is an email address in PHP?

Hello, Try this without regular expressions: <?php ...READ MORE

answered Nov 3, 2020 in PHP by Niroj
• 82,880 points
3,826 views
0 votes
1 answer

jQuery AJAX fires error callback on window unload - how do I filter out unload and only catch real errors?

Hello, In the error callback or $.ajax you have three ...READ MORE

answered Apr 27, 2020 in Java-Script by Niroj
• 82,880 points
4,062 views
0 votes
1 answer

How do I pass command line arguments to a Node.js program?

Hello @kartik, If your script is called myScript.js ...READ MORE

answered May 5, 2020 in Java-Script by Niroj
• 82,880 points
3,139 views
0 votes
1 answer

Error:Issue when trying to use IN() in wordpress database

Hello @kartik, Try this code : // Create an ...READ MORE

answered May 8, 2020 in PHP by Niroj
• 82,880 points
1,025 views
+2 votes
1 answer

How do I debug Node.js applications?

Hello @kartik, Use node-inspector  from any browser supporting WebSocket. Breakpoints, ...READ MORE

answered Jul 8, 2020 in Node-js by Niroj
• 82,880 points
971 views
0 votes
1 answer

How to Check for a Specific Type of Object in PHP

Hello @kartik, You can use instanceof: if ($pdo instanceof PDO) ...READ MORE

answered Oct 30, 2020 in PHP by Niroj
• 82,880 points
1,746 views
0 votes
1 answer

How to check if php session is already started or not?

Hello kartik, Use session_id(), it returns an empty string ...READ MORE

answered Apr 1, 2020 in PHP by Niroj
• 82,880 points
5,622 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP