$ apt search php7.3
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php7.3-common/now 7.3.4-1+ubuntu19.04.1+deb.sury.org+3 amd64 [installed,local]
  documentation, examples and common module for PHP
$ php --version
PHP 7.2.17-1+ubuntu19.04.1+deb.sury.org+3 (cli) (built: Apr 10 2019 10:52:05) ( NTS )