3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'a:7:{s:4:"size";s:4:"tiny";s:11:"folder_name";s:11:"user_images";s:13:"create_folder";s:2:"No";s:19:"permitted_file_type";s:16:"gif,png,jpg,jpeg";s:13:"max_file_size";s:4:"2048";s:24:"open_link_with_fancy_box";s:2:"No";s:14:"field_comments";s:0:"";}'; print_r(unserialize($str));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [size] => tiny [folder_name] => user_images [create_folder] => No [permitted_file_type] => gif,png,jpg,jpeg [max_file_size] => 2048 [open_link_with_fancy_box] => No [field_comments] => )

preferences:
212.3 ms | 406 KiB | 329 Q