Vim can auto-complete syntax for some of the most popular programming languages, but it's not enabled by default.
While in command mode, enter the following.
To start using PHP auto completion, press the Ctrl + x followed by Ctrl + o keys while writing some PHP functions.
Below is an example screenshot when pressing Ctrl + x followed by Ctrl + o after typing dat
Do note the function description provided at the top of the screen.
To enable PHP to autocomplete every time you open a PHP file, add this to your ~/.vimrc;
autocmd FileType php set omnifunc=phpcomplete#CompletePHP
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