Name: php - Cannot use isset() on the result of an expression (you can use "null !== expression" instead) when implementing pagination
Rating: 3 (2614 reviews)

Message:

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.

My Answer:
empty() instead)

In PHP, you cannot use isset() on the result of an expression. Instead, you should use empty() to check if a variable is set and not empty.

For example, instead of writing:

php

if (isset($array['key']) && $array['key'] !== '') {

    // do something

}

You should write:

php

if (!empty($array['key'])) {

    // do something

}

This will check if the key 'key' is set in the $array and if it is not empty.

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3 of 5 based on 2614 votes