What's the difference between isset() and array_key_exists()?

@CodeGrepperManu answered on April 9, 2023 Popularity 6/10 Helpfulness 2/10

answer What's the difference between isset() and array_key_exists()?

What's the difference between isset() and array_key_exists()?

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isset(): isset function will only return true if the key/variable exists and it is not null, it is closely work with value.

array_key_exists(): in array_key_exists if a key exists in an array value may null or empty, if array is not available it give error.

<?php
	$userArray = ['name'=>'Kumar', 'lastname'=>'D','logged_in'=>null];
	print "Using isset ".isset($userArray['logged_in']); //false
	print "\n";
	print "Using array_key_exists ".array_key_exists('logged_in', $userArray); //true
	print "\n====================\n";
	print "Using isset ".isset($userArray['name']); //true
	print "\n";
	print "Using array_key_exists ".array_key_exists('name', $userArray); //true
?>

Popularity 6/10 Helpfulness 2/10 Language php

Source: onecompiler.com

Tags: between difference php

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Contributed on Apr 09 2023

@CodeGrepperManu

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What's the difference between isset() and array_key_exists()?

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