This improves performance, readability, and consistency throughout core. * `intval()` → `(int)` * `strval()` → `(string)` * `floatval()` → `(float)` Props ayeshrajans. Fixes #42918. Built from https://develop.svn.wordpress.org/trunk@49108 git-svn-id: http://core.svn.wordpress.org/trunk@48870 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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