argument passing - Can't get PHP string variable to expand -


i define string variable this:

$menu = '../views/menus/documentation-menu.html';

later in script try use so:

$content = file_get_contents("{$menu}");

but when run script, warns me "warning: file_get_contents(): filename cannot empty in ".

if fact, i've tried sorts of combinations double quotes , single quotes , no braces, wrong. if put string in directly, works expected:

    $content = file_get_contents("../views/menus/documentation-menu.html");

but want $menu argument file_get_contents, not hard-coded string.

i'm missing simple because don't know php ....

have tried $content = file_get_contents($menu);?

that said, want manipulate file contents, or include in page? if latter, use include or require.


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