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<?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:"";}'; $str2 = 'a:8:{s:4:"size";s:4:"tiny";s:11:"folder_name";s:11:"user_module";s:13:"create_folder";s:2:"No";s:19:"permitted_file_type";s:16:"gif,png,jpg,jpeg";s:13:"max_file_size";s:4:"2048";s:24:"open_link_with_fancy_box";N;s:13:"image_capture";s:2:"No";s:14:"field_comments";s:0:"";}'; print_r(unserialize($str2));
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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [size] => tiny [folder_name] => user_module [create_folder] => No [permitted_file_type] => gif,png,jpg,jpeg [max_file_size] => 2048 [open_link_with_fancy_box] => [image_capture] => No [field_comments] => )

preferences:
328.43 ms | 406 KiB | 456 Q