Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
PHP 8 – How to use ValueError to check if the value encountered is of correct type?
PHP 8 uses a new built-in exception ValueError. PHP throws this exception when we pass a value to a function, which has a valid type but cannot be used for operation. In the earlier versions of PHP, we used to get a Warning error in such cases, but PHP 8 will show a ValueError.
Example: ValueError in PHP 8
<?php
declare(strict_types=1);
array_rand([1,2,3], 0);
json_decode('{}', true, -1);
?>Output
Fatal error: Uncaught ValueError: array_rand(): Argument #1 ($array) cannot be empty
Example
<?php
$x = strpos("h", "hello", 16);
var_dump($x);
?>Output
bool(false)
Example: ValueError in PHP 8
<?php
$x = strpos("h", "hello", 16);
var_dump($x);
?>Output
Fatal error: Uncaught ValueError: array_rand(): Argument #1 ($array) cannot be empty
Updated on: 01-Apr-2021
326 Views
Advertisements