php-dbg 28 (amd64 binary) in ubuntu xenial

 This package provides the debug symbols for PHP needed for properly
 debugging errors in PHP with gdb.
 .
 PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used
 open source general-purpose scripting language that is especially suited
 for web development and can be embedded into HTML.
 .
 This package is a dependency package, which depends on Debian's default
 PHP version (currently 7.0).